{"id":9473,"date":"2026-08-03T14:27:06","date_gmt":"2026-08-03T07:27:06","guid":{"rendered":"https:\/\/ketoan.man.net.vn\/?p=9473"},"modified":"2026-08-04T13:39:40","modified_gmt":"2026-08-04T06:39:40","slug":"ky-so-hoa-don-cham-hon-ngay-lap-hoa-don","status":"publish","type":"post","link":"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/","title":{"rendered":"From July 1st, 2026, is it permissible to digitally sign invoices later than the invoice creation date?"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Signing invoices later than the invoice creation date is not an uncommon situation in the practice of issuing electronic invoices, and from July 1, 2026, this issue has been clearly regulated. <\/span><strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/thuvienphapluat.vn\/van-ban\/Thue-Phi-Le-Phi\/Nghi-dinh-254-2026-ND-CP-huong-dan-Luat-Quan-ly-thue-hoa-don-dien-tu-chung-tu-dien-tu-713085.aspx\" target=\"_blank\" rel=\"noopener\">Decree 254\/2026\/ND-CP<\/a><\/span><\/strong><span style=\"font-weight: 400;\">Accordingly, businesses are allowed to digitally sign invoices later than the invoice date, but must complete the digital signing and submit the code (or transfer the data to the tax authority) to the tax authority no later than the next working day. Notably, sellers still declare taxes based on the invoice date, while buyers declare taxes based on the date they receive the valid invoice. This is a crucial difference that accountants need to understand to avoid errors in tax declaration and settlement. This article provides a detailed analysis of the legal basis, specific timelines, and practical considerations to help businesses correctly apply the regulations from the moment the Decree takes effect.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Index<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Quy_dinh_ve_thoi_diem_ky_so_tren_hoa_don_dien_tu_theo_Nghi_dinh_2542026ND-CP\" >Regulations on the timing of digital signatures on electronic invoices according to Decree 254\/2026\/ND-CP<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Thoi_diem_ky_so_tren_hoa_don_dien_tu_duoc_xac_dinh_nhu_the_nao\" >How is the date of digital signature on an electronic invoice determined?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_co_duoc_khong\" >Is it acceptable to digitally sign an invoice later than the invoice creation date?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Moc_ngay_lam_viec_tiep_theo_ap_dung_cho_nhung_truong_hop_nao\" >In which cases does the next working day benchmark apply?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Ke_khai_thue_khi_ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_thi_tinh_theo_moc_nao\" >When filing taxes, if the digitally signed invoice is later than the invoice issuance date, which date should be used for calculation?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Doi_voi_nguoi_ban\" >For sellers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Doi_voi_nguoi_mua\" >For buyers<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Nguyen_tac_lap_quan_ly_su_dung_hoa_don_dien_tu_lien_quan_den_viec_ky_so\" >The principles for creating, managing, and using electronic invoices involve digital signatures.<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Vi_sao_doanh_nghiep_can_tuan_thu_dung_thoi_han_ky_so\" >Why do businesses need to adhere to digital signature deadlines?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Doanh_nghiep_can_lam_gi_de_tuan_thu_dung_quy_dinh\" >What steps should businesses take to ensure compliance with regulations?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Ket_luan\" >Conclude<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Thong_tin_lien_he_MAN_%E2%80%93_Master_Accountant_Network\" >Contact information MAN \u2013 Master Accountant Network<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Cau_hoi_thuong_gap_ve_van_de_ky_so_hoa_don_cham_hon_ngay_lap_hoa_don\" >Frequently Asked Questions Regarding Digitally Signing Invoices Later Than the Invoice Date<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_co_bi_coi_la_vi_pham_khong\" >Is signing an invoice digitally later than the invoice creation date considered a violation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Neu_hoa_don_lap_vao_thu_Sau_thoi_han_ky_so_cham_nhat_la_ngay_nao\" >If the invoice is created on Friday, what is the latest deadline for digital signature?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_co_lam_thay_doi_ky_ke_khai_thue_cua_nguoi_ban_khong\" >Does signing an invoice later than the invoice date change the seller&#039;s tax filing period?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/ketoan.man.net.vn\/en\/ky-so-hoa-don-cham-hon-ngay-lap-hoa-don\/#Truong_hop_nao_khong_ap_dung_moc_ngay_lam_viec_tiep_theo_khi_ky_so_hoa_don\" >In which cases is the next working day not applicable when digitally signing invoices?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Quy_dinh_ve_thoi_diem_ky_so_tren_hoa_don_dien_tu_theo_Nghi_dinh_2542026ND-CP\"><\/span><b>Regulations on the timing of digital signatures on electronic invoices according to Decree 254\/2026\/ND-CP<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_9475\" aria-describedby=\"caption-attachment-9475\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9475\" src=\"https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-khong-va-quy-dinh-ve-thoi-diem-ky-so-hoa-don.jpg\" alt=\"K\u00fd s\u1ed1 h\u00f3a \u0111\u01a1n ch\u1eadm h\u01a1n ng\u00e0y l\u1eadp h\u00f3a \u0111\u01a1n c\u00f3 \u0111\u01b0\u1ee3c kh\u00f4ng v\u00e0 quy \u0111\u1ecbnh v\u1ec1 th\u1eddi \u0111i\u1ec3m k\u00fd s\u1ed1 h\u00f3a \u0111\u01a1n\" width=\"1200\" height=\"675\" srcset=\"https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-khong-va-quy-dinh-ve-thoi-diem-ky-so-hoa-don.jpg 1200w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-khong-va-quy-dinh-ve-thoi-diem-ky-so-hoa-don-300x169.jpg 300w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-khong-va-quy-dinh-ve-thoi-diem-ky-so-hoa-don-1024x576.jpg 1024w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-khong-va-quy-dinh-ve-thoi-diem-ky-so-hoa-don-768x432.jpg 768w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-khong-va-quy-dinh-ve-thoi-diem-ky-so-hoa-don-18x10.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption id=\"caption-attachment-9475\" class=\"wp-caption-text\">Is it permissible to digitally sign invoices later than the invoice issuance date, and what are the regulations regarding the timing of digital invoice signing?<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Thoi_diem_ky_so_tren_hoa_don_dien_tu_duoc_xac_dinh_nhu_the_nao\"><\/span><b>How is the date of digital signature on an electronic invoice determined?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">According to Section 7 of the Appendix issued with Decree 254\/2026\/ND-CP, the time of digital signing on an electronic invoice is determined as the time when the seller and buyer use digital signatures to sign the electronic invoice, and this time is displayed in the format of day, month, year of the Gregorian calendar.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This regulation is quite easy to understand: the time of digital signature is not an abstract concept, but is linked to the actual action of someone (the seller or the buyer, depending on the type of invoice) using their digital signature to confirm the electronic invoice. This time is then recorded by the system and displayed in the standard date format.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">The problem arises because the time of invoice creation and the time of digital signing do not always coincide. In fact, there are many objective reasons why digital signing may occur after the invoice creation.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>For example:<\/b><span style=\"font-weight: 400;\"> Invoices are generated at the end of the workday, digital signatures require multi-step verification, or the system experiences temporary errors.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_co_duoc_khong\"><\/span><b>Is it acceptable to digitally sign an invoice later than the invoice creation date?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<figure id=\"attachment_9488\" aria-describedby=\"caption-attachment-9488\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9488\" src=\"https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Tu-0172026-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-duoc-khong-1.jpg\" alt=\"T\u1eeb 01\/7\/2026, k\u00fd s\u1ed1 h\u00f3a \u0111\u01a1n ch\u1eadm h\u01a1n ng\u00e0y l\u1eadp h\u00f3a \u0111\u01a1n c\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0\u1ee3c kh\u00f4ng\" width=\"1200\" height=\"675\" srcset=\"https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Tu-0172026-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-duoc-khong-1.jpg 1200w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Tu-0172026-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-duoc-khong-1-300x169.jpg 300w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Tu-0172026-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-duoc-khong-1-1024x576.jpg 1024w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Tu-0172026-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-duoc-khong-1-768x432.jpg 768w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Tu-0172026-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-co-duoc-duoc-khong-1-18x10.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption id=\"caption-attachment-9488\" class=\"wp-caption-text\">From July 1st, 2026, is it permissible to digitally sign invoices later than the invoice creation date?<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">The answer is <\/span><b>allowed<\/b><span style=\"font-weight: 400;\">However, this comes with a specific time limit that businesses must strictly adhere to.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Specifically, Section 7 of the Appendix issued with Decree 254\/2026\/ND-CP stipulates that: in cases where an issued electronic invoice has a digital signature date different from the invoice issuance date, the digital signature date and the date of sending the invoice to the tax authority for code issuance (for invoices with a tax authority code) or the date of transferring electronic invoice data to the tax authority (for electronic invoices without a tax authority code) must be no later than... <\/span><b>next working day<\/b><span style=\"font-weight: 400;\"> from the time the invoice is issued.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">In other words, from July 1st, 2026, sellers are allowed to digitally sign electronic invoices later than the invoice creation date, but not exceeding the next working day. This is a flexible regulation that gives businesses a reasonable amount of time to complete the digital signing procedure in unforeseen circumstances, while still ensuring the timeliness and transparency of invoice data sent to the tax authorities.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Please note: <\/b><span style=\"font-weight: 400;\">The aforementioned regulation regarding the &quot;next working day&quot; timeframe will not apply to data submissions in the form of Summary Tables and Transaction Details Tables as stipulated in Article 16 of Decree 254\/2026\/ND-CP. This is an important exception that business accountants, especially those in retail and service businesses with a large number of invoices, need to pay particular attention to in order to avoid misapplying the procedure.\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Moc_ngay_lam_viec_tiep_theo_ap_dung_cho_nhung_truong_hop_nao\"><\/span><b>In which cases does the next working day benchmark apply?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">To make it easier to understand, the regulations regarding digitally signing invoices later than the invoice creation date can be summarized in the following table:<\/span><\/p>\n<table style=\"width: 100%; border-color: #000000;\" border=\"1\" cellspacing=\"2\" cellpadding=\"12\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><b>Invoice type<\/b><\/td>\n<td style=\"text-align: center;\"><b>Tasks to be completed<\/b><\/td>\n<td style=\"text-align: center;\"><b>Latest deadline<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">Electronic invoices have a tax authority code.<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">Digitally sign the invoice and send it to the tax authority to obtain a code.<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">The next business day after the invoice date.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">Electronic invoices without codes\u00a0<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">Digitally sign invoices and transfer invoice data to the tax authorities.<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">The next business day after the invoice date.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">The invoice submits data via the Summary Table and Transaction Details Table.\u00a0<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">According to the separate aggregated data submission procedure.<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">The next business day deadline does not apply.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Therefore, whether the invoice has a tax authority code or not, the general principle remains: if the time of digital signing differs from the time of invoice creation, businesses have up to the end of the next working day to complete the digital signing and send\/transfer the data to the tax authority.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Ke_khai_thue_khi_ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_thi_tinh_theo_moc_nao\"><\/span><b>When filing taxes, if the digitally signed invoice is later than the invoice issuance date, which date should be used for calculation?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_9476\" aria-describedby=\"caption-attachment-9476\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9476\" src=\"https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ke-khai-thue-khi-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-thi-tinh-theo-moc-nao.jpg\" alt=\"K\u00ea khai thu\u1ebf khi k\u00fd s\u1ed1 h\u00f3a \u0111\u01a1n ch\u1eadm h\u01a1n ng\u00e0y l\u1eadp h\u00f3a \u0111\u01a1n th\u00ec t\u00ednh theo m\u1ed1c n\u00e0o\" width=\"1200\" height=\"675\" srcset=\"https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ke-khai-thue-khi-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-thi-tinh-theo-moc-nao.jpg 1200w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ke-khai-thue-khi-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-thi-tinh-theo-moc-nao-300x169.jpg 300w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ke-khai-thue-khi-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-thi-tinh-theo-moc-nao-1024x576.jpg 1024w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ke-khai-thue-khi-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-thi-tinh-theo-moc-nao-768x432.jpg 768w, https:\/\/ketoan.man.net.vn\/wp-content\/uploads\/2026\/08\/Ke-khai-thue-khi-ky-so-hoa-don-cham-hon-ngay-lap-hoa-don-thi-tinh-theo-moc-nao-18x10.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption id=\"caption-attachment-9476\" class=\"wp-caption-text\">When filing taxes, if the digitally signed invoice is later than the invoice issuance date, which date should be used for calculation?<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">One of the biggest concerns for accountants when dealing with situations where invoices are digitally signed later than the invoice date is: which date should be used for tax declaration \u2013 the invoice date or the digital signing date?<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This is a crucial point that needs clarification, because if the declaration deadline is incorrectly determined, businesses may face the risk of discrepancies between the declared figures and the invoice data in the tax authority&#039;s system.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Doi_voi_nguoi_ban\"><\/span><b>For sellers<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">According to the provisions of Section 7 of the Appendix issued with Decree 254\/2026\/ND-CP, the seller declares <\/span><span style=\"font-weight: 400;\">tax according <\/span><strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/ketoan.man.net.vn\/en\/xuat-hoa-don-theo-nghi-dinh-254\/\">time of invoicing<\/a><\/span><\/strong><span style=\"font-weight: 400;\">This is based on the date the invoice is issued, not the date of digital signing. This means that even if the digital signing is delayed, within the permissible timeframe of the next business day, the seller&#039;s tax declaration obligation is still calculated from the date the invoice is created, and is not shifted according to the actual date of digital signing.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This is a crucial point for businesses to remember, as many accountants mistakenly believe that the date of digital signature determines the tax period for value-added tax or corporate income tax related to that invoice. Understanding the regulations correctly helps businesses avoid errors when preparing tax returns, especially in cases where invoices are issued at the end of the month or tax period, but the digital signature falls in the following month or tax period.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Doi_voi_nguoi_mua\"><\/span><b>For buyers<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Unlike the seller, the tax filing time for the buyer is determined as the time <\/span><b>received the invoice<\/b><span style=\"font-weight: 400;\"> Ensure that the form and content are correct and complete as prescribed in Article 10 of Decree 254\/2026\/ND-CP.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This difference stems from the fact that buyers can only use invoices as a basis for tax declaration and deduction when they have actually received a valid invoice in hand (or on the electronic system). Therefore, even if the invoice was issued previously, if the buyer only receives a valid invoice at a later time (for example, due to the invoice being digitally signed later than the invoice date, resulting in a delay in sending the invoice), the buyer&#039;s tax declaration period will be calculated based on the time of receiving that valid invoice.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This is a point that the buyer&#039;s accounting department needs to pay special attention to when reconciling and accounting for expenses and declaring input tax, to avoid incorrect recording periods that lead to discrepancies in figures during tax settlement.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Nguyen_tac_lap_quan_ly_su_dung_hoa_don_dien_tu_lien_quan_den_viec_ky_so\"><\/span><b>The principles for creating, managing, and using electronic invoices involve digital signatures.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">According to Article 4 of Decree 254\/2026\/ND-CP:<\/span><\/p>\n<blockquote><p><i><span style=\"font-weight: 400;\">When selling goods or providing services, sellers must issue electronic invoices to buyers, including cases where goods or services are used for promotions, advertising, or as samples; goods or services used for gifts, donations, exchanges, as payment in lieu of wages for employees, or for internal consumption; and goods exported in the form of loans or borrowings.<\/span><\/i><\/p><\/blockquote>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Electronic invoices must be prepared in the correct standard data format, fully recording the content as prescribed by tax law, accounting law, and Article 10 of Decree 254\/2026\/ND-CP, ensuring that they fully and truthfully reflect the content of the economic transaction. In particular, the Decree clearly states:<\/span><\/p>\n<blockquote><p><i><span style=\"font-weight: 400;\">The seller is legally responsible for the accuracy of the issued invoice, including adhering to the deadline for digitally signing the invoice, which must be later than the invoice issuance date as stated in the section above (next working day).<\/span><\/i><\/p><\/blockquote>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Furthermore, before using electronic invoices, economic organizations, other organizations, business households, and individual businesses must register to use electronic invoices in accordance with the regulations of the Minister of Finance. The registration, management, and use of electronic invoices must comply with the provisions of the law on electronic transactions, accounting, taxation, and tax administration.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Vi_sao_doanh_nghiep_can_tuan_thu_dung_thoi_han_ky_so\"><\/span><b>Why do businesses need to adhere to digital signature deadlines?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Understanding and complying with regulations regarding digitally signing invoices later than the invoice issuance date is not only a technical issue but also directly related to the validity of the invoice and the legal security of the business.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If the digital signing process exceeds the next working day from the time the invoice is issued, the invoice may be considered non-compliant with the procedures stipulated in Decree 254\/2026\/ND-CP. This poses a risk when the tax authorities compare the invoice data with the tax declaration data, potentially leading to the business having to provide explanations, make adjustments, or even affecting the buyer&#039;s tax deduction rights if the invoice does not meet the requirements in terms of form and content as stipulated in Article 10.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Conversely, when businesses adhere to the deadline for digitally signing invoices later than the invoice issuance date as stipulated, it brings many practical benefits:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ensuring that electronic invoices have full legal validity facilitates tax declarations for both sellers and buyers.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Minimize the risk of being required by tax authorities to explain or verify data due to discrepancies between the time the invoice was created and the time it was digitally signed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Contributing to the development of a transparent and accurate electronic invoice and document data system, which serves as a database for tax management as stipulated in Article 4 of Decree 254\/2026\/ND-CP.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">For businesses with a high volume of invoice issuance processes, it is advisable to consult a reference. <\/span><strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/ketoan.man.net.vn\/en\/dich-vu-ke-toan-noi-bo\/\">internal accounting services<\/a><\/span><\/strong><span style=\"font-weight: 400;\"> Strict control over the timing of digital signatures relative to the time of invoice creation is essential to ensure that no invoices are digitally signed later than the next working day without a valid reason or without an exception as stipulated in Article 16 of Decree 254\/2026\/ND-CP.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Doanh_nghiep_can_lam_gi_de_tuan_thu_dung_quy_dinh\"><\/span><b>What steps should businesses take to ensure compliance with regulations?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">In summary, to fully answer the question &quot;Is it permissible to digitally sign invoices later than the invoice creation date?&quot;, there are three core points that accountants and businesses need to remember:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Digital signatures may be signed later than the invoice date.<\/b><span style=\"font-weight: 400;\">However, the time of digital signing and the time of sending the code to the tax authority (or transferring data to the tax authority) must be no later than the next working day from the time the invoice is issued, except in the case of sending data according to the Summary Table and Transaction Details Table as per Article 16 of Decree 254\/2026\/ND-CP.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Sellers declare taxes based on the date the invoice is issued.<\/b><span style=\"font-weight: 400;\">, while <\/span><b>Buyers declare taxes based on the date they receive the invoice.<\/b><span style=\"font-weight: 400;\"> Ensure that the form and content comply with Article 10 of Decree 254\/2026\/ND-CP.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>The seller is legally responsible.<\/b><span style=\"font-weight: 400;\"> Regarding the accuracy of issued invoices, this includes compliance with the new regulations regarding the deadline for digitally signing invoices later than the invoice issuance date.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This is the time for units to consider using it.<\/span><strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/ketoan.man.net.vn\/en\/dich-vu-ke-toan-tron-goi\/\"> full accounting service<\/a><\/span><\/strong><span style=\"font-weight: 400;\"> From specialized and experienced units like MAN \u2013 Master Accountant Network, you can receive support in controlling the entire process of creating, digitally signing, and declaring electronic invoices in accordance with regulations, avoiding the risk of exceeding the allowed deadline for digital signing.\u00a0<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span><b>Conclude<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">From July 1st, 2026, the date Decree 254\/2026\/ND-CP officially comes into effect, businesses should review their internal procedures for issuing electronic invoices and regularly update relevant guidance documents from the Ministry of Finance and the directly managing tax authorities to ensure accurate invoice issuance, digital signature, and tax declaration processes in compliance with the law.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">For small or newly established businesses that do not have a dedicated accounting department to continuously update on new regulations such as Decree 254\/2026\/ND-CP, the solution is...<\/span><strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/ketoan.man.net.vn\/en\/thue-ke-toan-ngoai\/\"> hire an external accountant<\/a><\/span><\/strong><span style=\"font-weight: 400;\"> This is also a suitable option, helping to ensure that the digital signing of invoices later than the invoice creation date always remains within the stipulated time limit, while optimizing operating costs for businesses.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If your business needs advice, support, answers to questions, or updates on new policies effective from July 1, 2026, please don&#039;t hesitate to contact us.<\/span><strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/ketoan.man.net.vn\/en\/lien-he\/\"> Contact the MAN \u2013 Master Accountant Network team.<\/a><\/span><\/strong><span style=\"font-weight: 400;\"> To receive prompt assistance!<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Thong_tin_lien_he_MAN_%E2%80%93_Master_Accountant_Network\"><\/span><b>Contact information MAN \u2013 Master Accountant Network<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Address:<\/b><span style=\"font-weight: 400;\"> No. 19A, Street 43, Tan Thuan Ward, Ho Chi Minh City<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Mobile\/Zalo:<\/b><span style=\"font-weight: 400;\"> 0903 963 163 \u2013 0903 428 622<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>E-mail:<\/b><span style=\"font-weight: 400;\"> man@man.net.vn<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Google Business Profile:<\/b> <strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/share.google\/EmihzHg354pCASC9k\" target=\"_blank\" rel=\"noopener\">View MAN \u2013 Master Accountant Network&#039;s Google Business Profile\u00a0<\/a><\/span><\/strong><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>LinkedIn Founder:<\/b> <strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.linkedin.com\/in\/tuy%C3%AAn-l%C3%AA-ho%C3%A0ng-65292aa0\/\" target=\"_blank\" rel=\"noopener\">View expert Le Hoang Tuyen&#039;s LinkedIn profile.\u00a0<\/a><\/span><\/strong><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Responsible for production and professional content review by: Mr. <\/span><strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/man.net.vn\/le-hoang-tuyen\/\" target=\"_blank\" rel=\"noopener\">Le Hoang Tuyen \u2013 Founder &amp; CEO of MAN \u2013 Master Accountant Network<\/a><\/span><\/strong><span style=\"font-weight: 400;\">He is a CPA Vietnam auditor with over 30 years of in-depth experience in accounting, auditing, taxation, and corporate legal consulting.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_ve_van_de_ky_so_hoa_don_cham_hon_ngay_lap_hoa_don\"><\/span><b>Frequently Asked Questions Regarding Digitally Signing Invoices Later Than the Invoice Date<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_co_bi_coi_la_vi_pham_khong\"><\/span><b>Is signing an invoice digitally later than the invoice creation date considered a violation?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">No, if the digital signing is done within the permitted limits. According to Section 7 of the Appendix issued with Decree 254\/2026\/ND-CP, sellers are allowed to digitally sign electronic invoices later than the time of invoice creation, provided that the digital signing and submission to the tax authority for code issuance are completed no later than the next working day. Only when exceeding this timeframe does the invoice pose a risk of not complying with the correct procedure.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Neu_hoa_don_lap_vao_thu_Sau_thoi_han_ky_so_cham_nhat_la_ngay_nao\"><\/span><b>If the invoice is created on Friday, what is the latest deadline for digital signature?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Decree 254\/2026\/ND-CP stipulates that the deadline is the next working day from the time the invoice is issued, not the immediately following calendar day. Therefore, businesses need to base their calculations on the actual working days of their unit to accurately determine the digital signature deadline for each specific case.\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Ky_so_hoa_don_cham_hon_ngay_lap_hoa_don_co_lam_thay_doi_ky_ke_khai_thue_cua_nguoi_ban_khong\"><\/span><b>Does signing an invoice later than the invoice date change the seller&#039;s tax filing period?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">No. Sellers still declare taxes based on the invoice date, not the date of digital signature. This is an important principle that helps businesses avoid confusion when determining the tax reporting period, especially with invoices issued at the end of the period but digitally signed in the following period.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Truong_hop_nao_khong_ap_dung_moc_ngay_lam_viec_tiep_theo_khi_ky_so_hoa_don\"><\/span><b>In which cases is the next working day not applicable when digitally signing invoices?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This timeframe does not apply to cases where invoice data is submitted via the Summary Table or Transaction Details Table as stipulated in Article 16 of Decree 254\/2026\/ND-CP.\u00a0\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>K\u00fd s\u1ed1 h\u00f3a \u0111\u01a1n ch\u1eadm h\u01a1n ng\u00e0y l\u1eadp h\u00f3a \u0111\u01a1n l\u00e0 t\u00ecnh hu\u1ed1ng kh\u00f4ng hi\u1ebfm g\u1eb7p trong th\u1ef1c t\u1ebf xu\u1ea5t h\u00f3a \u0111\u01a1n \u0111i\u1ec7n t\u1eed, v\u00e0 t\u1eeb ng\u00e0y 01\/7\/2026, v\u1ea5n \u0111\u1ec1 n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh r\u00f5 t\u1ea1i Ngh\u1ecb \u0111\u1ecbnh 254\/2026\/N\u0110-CP. Theo \u0111\u00f3, doanh nghi\u1ec7p \u0111\u01b0\u1ee3c ph\u00e9p k\u00fd s\u1ed1 ch\u1eadm h\u01a1n th\u1eddi \u0111i\u1ec3m l\u1eadp h\u00f3a \u0111\u01a1n, [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":9486,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9473","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/posts\/9473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/comments?post=9473"}],"version-history":[{"count":3,"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/posts\/9473\/revisions"}],"predecessor-version":[{"id":9489,"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/posts\/9473\/revisions\/9489"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/media\/9486"}],"wp:attachment":[{"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/media?parent=9473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/categories?post=9473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ketoan.man.net.vn\/en\/wp-json\/wp\/v2\/tags?post=9473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}