Outsourcing accounting services is becoming a preferred solution for many businesses amidst constantly changing tax and accounting policies and increasingly stringent compliance requirements. From 2026 onwards, new regulations regarding accounting systems and electronic invoices will be implemented, such as... Circular 99/2025/ND-CP and Decree 254/2026/ND-CPBecause of taxes, businesses need not only to record accurate figures but also to control legal risks from the outset. In this article, MAN – Master Accountant Network will analyze the key changes that businesses need to be aware of and the benefits of hiring a professional accountant. full-service accounting, Reference price list for 2026 and criteria for selecting reputable suppliers to optimize costs, ensure legal compliance, and promote sustainable development.
The 2026 accounting shock: What are businesses facing?
Entering 2026, the Vietnamese business community will officially operate under a new legal framework. If business owners maintain outdated tax management practices, the risk of business suspension or criminal prosecution is very high. When you decide to hire accounting services, the most important thing is that the firm understands the digital transformation roadmap of the tax sector.
Conversion to Circular 99/2025/TT-BTC
Circular 99/2025/TT-BTC also restructures the entire system of documents, accounts, ledgers, and financial reports that businesses are required to possess:
- Accounting documents must be prepared for every transaction, and only once: Businesses may refer to the forms in Appendix I and may design or modify them to suit their specific operations, but are required to issue accounting regulations clearly stating the reasons for the modifications and bear legal responsibility for the changes. In particular, the chief accountant (or authorized person) is not permitted to sign accounting documents under the authority of a business manager or executive, unless otherwise stipulated by law.
- Accounting chart of accounts: Businesses are allowed to amend their names, account numbers, and account structures as appropriate, but under no circumstances should this change or affect the indicators on the financial statements.
- Accounting ledger The books must be opened at the beginning of the accounting year (or from the date of establishment for new businesses), recorded promptly, clearly, completely, and accurately according to the original documents. The books are closed at the end of the accounting period to prepare financial statements.
- Financial reports The accounting records must fully reflect assets, liabilities, equity, revenue and expenses, profit or loss, and cash flows, accompanied by a detailed explanation of the accounting policies applied.
Reference: Exchange rates for export invoices are regulated by Circular 99/2025/TT-BTC.
Most notably: The circular clearly stipulates that in cases where an accounting service business is hired to prepare and present financial statements or to act as chief accountant, the financial statements must clearly state the accounting service license number of the professional and the name of the service provider.
Decree 254/2026/ND-CP: Comprehensively tightening regulations on electronic invoices and documents.
Not stopping at Circular 99/2025/TT-BTC, on June 30, 2026, the Government continued to issue Decree 254/2026/ND-CP, detailing the implementation of Law No. 108/2025/QH15 on Tax Administration regarding electronic invoices and electronic documents, effective from July 1, 2026. Specifically, it stipulates:
- The principle of mandatory maximum extended invoicing.According to Article 4 of the Decree, sellers must issue electronic invoices even for promotional goods, samples, gifts, payments in lieu of salary, internal consumption, or loans.
- Three groups of people use different invoices.Invoices can be categorized into: invoices with a tax authority code (applied by default), invoices without a code (for businesses with sufficient IT infrastructure), and specific industry groups (such as electricity, petroleum, banking, insurance, e-commerce, etc.). Incorrectly identifying the industry group will directly affect operational processes.
- The timing for issuing detailed invoices varies by industry: For example, in the export industry, the deadline is a maximum of one working day after customs clearance; in construction and installation, it's calculated from the date of acceptance; in telecommunications and IT, it's a maximum of two months from the date the charge is incurred; and in ride-hailing services, it's calculated immediately after the trip ends. This is the most common mistake in practice and also the most frequently penalized error.
- Household businesses with revenue exceeding 1 billion VND. Or, if selling assets requiring registration of ownership or usage rights, it is mandatory to use electronic invoices with codes or invoices generated from cash registers connected to the tax authority's data system.
- Electronic documents (Personal income tax deductions, tax receipts, fees or charges) must also comply with a specific data standard format, with clear regulations on the time of creation, method of creation, and responsibility for transferring data to the tax authority.
In other words, Decree 254/2026/ND-CP is not just a technical document on electronic invoices and electronic documents, but also sets out a series of timelines, data formats, and legal responsibilities that a typical internal accountant would find difficult to fully and accurately update all at once.
See more: Invoices must be issued in accordance with Decree 254/2026/ND-CP.
Exchange rates for invoice issuance under Decree 252/2026/ND-CP
One of the most common questions that the accounting community has been asking since July 1, 2026, is: "When issuing invoices in foreign currency, which exchange rate should be used?"
The reason is that there are currently three documents that all mention exchange rates but with different scopes of application, causing many businesses to apply them incorrectly and risk having their taxes reassessed or being penalized due to discrepancies in invoices, declarations, and accounting records.
- Decree 252/2026/ND-CP, issued on June 30, 2026, and effective from July 1, 2026, is a guiding document for the implementation of the Law on Tax Administration No. 108/2025/QH15, replacing Decree 126/2020/ND-CP. Clause 4, Article 14The Decree clearly stipulates that: for exported and imported goods, The exchange rate used for tax calculation is now in accordance with customs law regulations, and the exchange rate previously used under accounting law is no longer applied.
- Circular 99/2025/TT-BTC It only specifies the exchange rate used for accounting entries For transactions conducted in foreign currency, the exchange rate used for calculating import and export taxes will not be adjusted at all.
- Decree 254/2026/ND-CP (Regulations on electronic invoices) require sellers, when issuing invoices in foreign currency, to Simultaneously display the exchange rate to VND directly on the invoice., according to the exchange rate stipulated in the Law on Tax Administration and guiding documents, which is a reference back to Decree 252/2026/ND-CP for import and export goods.
Unforeseen risks arise from not keeping up with new tax policies.
Why are many businesses willing to spend money hiring accounting services instead of running an in-house accounting department that lacks sufficient experience? The answer lies in the following tremendous financial risks:
Administrative fines and late payment penalties have increased sharply.
The penalties for late filing or inaccurate tax returns in 2026 have increased by 1.5 to 2 times. With late payment interest calculated daily, a small error at the beginning of the year can turn into a huge tax debt. A reputable accounting service provider will commit to filing tax returns on time.
Criminal risks associated with new tax evasion practices.
According to the latest guidelines effective July 1, 2026, actions such as "internal transfer pricing without justifiable business purposes" or "using invoices from businesses with high tax risks" are subject to legal action. Hiring reputable and experienced accounting services helps businesses assess risks from input suppliers before conducting transactions.
Loss of tax incentives from Corporate Income Tax Law No. 67/2025/QH15
The new tax law enacted in 2025 offers many incentives for businesses undergoing digital transformation. However, the documentation required is extremely complex. Without timely updates from accounting services, businesses will lose significant tax benefits, reducing their competitiveness in the market.
Why is outsourcing accounting services the best solution in 2026?
With the continuous changes from July 1, 2026, businesses need not only someone who knows how to do bookkeeping but also a partner who understands the legal nature of each exchange rate and knows how to apply it consistently across the entire chain of documents, invoices, ledgers, and tax reports.
When hire an accountant According to MAN – Master Accountant Network, import-export businesses and businesses with foreign exchange transactions are supported:
- Review and establish internal exchange rate regulations. From the outset, clearly distinguish between the customs tax exchange rate, the accounting exchange rate, and the exchange rate shown on electronic invoices to avoid discrepancies between the three sets of data.
- Update text in real time.MAN's team of CPAs and tax experts closely monitors newly issued decrees and circulars, ensuring they are updated and correctly applied from the very first filing period.
- Reduce the risk of being assessed taxes or having taxes collected back. This is due to exchange rate discrepancies during post-audit, especially for businesses with a large proportion of foreign currency transactions such as exports, FDI, and processing.
- Assistance in processing VAT refund applications and corporate income tax settlements. When exchange rate discrepancies arise, ensure that the records are transparent and that each figure has a clear legal basis.
The value of hiring accounting services from MAN goes beyond simply ensuring legal bookkeeping; it helps businesses control legal risks throughout the entire process, from invoicing to financial reporting—something a single in-house accountant would struggle to fully address in today's constantly changing policy environment.
Tax management for household businesses in 2026: Mandatory changes
In 2026, large businesses will no longer be subject to flat-rate taxation but will have to switch to a declaration-based system. This is why hiring accounting services is advisable to ensure legal safety in the face of policy changes.
- Mandatory accounting: Household businesses must implement accounting procedures according to the new guidelines, equivalent to those for micro-enterprises.
- Electronic invoices generated from cash registers: Mandatory 100% for service and food industries. Without hiring accounting support, business owners will find it very difficult to implement this process correctly on their own.
Accounting service price list for 2026
Below is a detailed price list for businesses in need of accounting services (Updated 2026):
| Scale (Invoices/month) | Trade and Services Group (VND) | Production and Construction Group (VND) |
| No issues arose. | 500.000 – 800.000 | 1.000.000 – 1.200.000 |
| From 1 to 20 invoices | 1.200.000 – 2.000.000 | 2.000.000 – 3.000.000 |
| From 21 to 50 invoices | 2.500.000 – 4.000.000 | 3.500.000 – 5.500.000 |
| From 51 to 100 invoices | 4.500.000 – 6.500.000 | 6.000.000 – 8.500.000 |
| Over 100 invoices | Survey and Quotation Available | Survey and Quotation Available |
Note: The price list above is for general market reference only. For the most optimal financial plan, please see the details. Quotation for comprehensive accounting services Alternatively, contact us directly to have our team of experts conduct an on-site survey of your documents and send you a detailed quote tailored to your business size.
Implementation process when hiring a full-service accounting firm.
Professional work processes are a testament to quality and earn the trust of businesses. full accounting service from MAN – Master Accountant Network
- Intake and Review: Re-evaluate all existing records to identify potential risks.
- Regular data processing: On a monthly basis, MAN's accountants will collect data and reconcile taxes.
- Financial Reporting and Consulting: Providing accurate data to help business owners make informed business decisions.
- Digital record keeping: Ensuring data security on a cloud platform, businesses can access their records anytime, anywhere when hiring accounting services from MAN – Master Accountant Network.
Conclusion: Don't let accounting mistakes hinder your business.
Financial transparency is key to survival in the digital age. Choosing a reputable accounting firm is the smartest investment a business owner can make.
If you are looking for an accounting service solution that complies with Circular 99/2025/TT-BTC, and issues electronic invoices and electronic documents in accordance with Decree 254/2026/NĐ-CP, then... Contact MAN – Master Accountant Network now! For free support and advice!
Contact information MAN – Master Accountant Network
- Address: No. 19A, Street 43, Tan Thuan Ward, Ho Chi Minh City
- Mobile/Zalo: 0903 963 163 – 0903 428 622
- E-mail: man@man.net.vn
- Google Business Profile: View MAN – Master Accountant Network's Google Business Profile
- LinkedIn Founder: View expert Le Hoang Tuyen's LinkedIn profile.
Responsible for production and professional content review by: Mr. Le Hoang Tuyen – Founder & CEO of MAN – Master Accountant NetworkHe is a CPA Vietnam auditor with over 30 years of in-depth experience in accounting, auditing, taxation, and corporate legal consulting.
Frequently Asked Questions When Hiring Accounting Services
The main difference lies in continuity and specialization. In-house accountants may leave, causing data disruptions, while outsourced accounting services ensure continuous operation. Furthermore, outsourced services are always supervised by a chief accountant and tax expert, and are always up-to-date with new policies, resulting in greater accuracy and timeliness.
The new circular requires a more detailed classification of expenses and revenues by category. If businesses do not update their software systems in a timely manner, they are very likely to have inaccurate figures for deductible value-added tax (VAT).
No. Professional accounting service providers like MAN always have a data digitalization process in place. We will work directly with the previous accountant to take over the books, reconcile opening balances, and be responsible for cleaning up the old data before transferring it to the new management system.
Yes. Corporate income tax and VAT refunds are specialized tasks. By hiring accounting services at MAN, businesses will receive support in preparing refund applications according to legal procedures, helping businesses recover cash flow quickly while ensuring absolute safety against post-audits.
While no permission is required, businesses are obligated to issue their own accounting regulations clearly stating the reasons for the changes, and they are legally responsible for the changes. This is a crucial aspect that can easily be overlooked without close monitoring by someone knowledgeable about the regulations, and it's one of the tasks that MAN typically reviews for businesses.
Yes. This is considered one of the most common mistakes in accounting and tax practice, as each industry (construction, real estate, telecommunications, transportation, healthcare, etc.) has different invoice timing. Hiring accounting services that understand the regulations of each industry will help businesses minimize the risk of being subject to back taxes or penalties due to incorrect invoice timing.
Yes. Right from the initial acceptance and review stage, MAN's team will re-evaluate all old documents, account structures, and ledgers to identify inconsistencies with Circular 99/2025/TT-BTC, and then propose adjustments (including accounting regulations if necessary) before officially implementing them on the new system. What is the biggest difference between in-house accounting and outsourcing accounting services?
How does Circular 99/2025/TT-BTC affect monthly tax reporting?
If a business is currently using an in-house accountant, will it encounter difficulties in data transfer when switching to outsourced accounting services?
Does hiring accounting services from MAN help with tax refund procedures?
If a business modifies its own forms and accounting records according to Circular 99, do they need permission from the tax authorities?
Are there penalties for issuing invoices at the wrong time, according to regulations for each industry?
When hiring MAN's full-service accounting services, will businesses receive a complete review of their entire accounting system and records in accordance with Circular 99?
