Major Tax Changes in 2026: What Should Businesses Prepare For?

Entering 2026, Vietnam’s tax landscape is expected to undergo significant changes, directly impacting all types of businesses—from small household businesses to large enterprises. Understanding and proactively adapting to these changes is not only essential for survival but also an opportunity to optimize operations and achieve sustainable growth.

At RBox, we understand that tax information is critically important for the business community. This article provides an overview of the most notable upcoming tax policy changes, helping you prepare effectively for the next phase.

1. The End of Lump-Sum Tax – Full Transition to Tax Declaration

One of the most transformative changes is the complete removal of the lump-sum tax model for household businesses. From 2026, all businesses will be required to declare taxes in accordance with regulations, reflecting a shift toward transparency and professionalism in tax management.

• Affected subjects: Primarily household businesses.
• Key updates:
  • Businesses with annual revenue under 200 million VND will only need to declare taxes without paying.
  • Businesses with revenue from 200 million to 3 billion VND/year must declare taxes periodically (monthly or quarterly).
• Important note: Taxes will be calculated based on total revenue without deducting input costs. This requires stricter financial planning to maintain profitability.

2. Stricter Input–Output Invoice Requirements: Transparency is Key

The principle of “valid input before output” will be strictly enforced to prevent tax evasion and ensure transaction transparency.

• Implication: Businesses must prove the origin of goods/services via valid invoices before issuing output invoices.
• Risk: Issuing output invoices without proper input documentation may trigger tax audits.
• Solutions:
  • Carefully store all invoices and supporting documents.
  • Prioritize suppliers that can issue valid invoices.
  • For small informal purchases, prepare regulatory declaration forms (e.g., Form 01/TNDN) with payment proof.

3. E-Invoicing Process: Driving Digital Transformation

E-invoicing will become mandatory and more widespread, helping simplify processes and enhance security.

• Basic steps:
  • Registration: Register e-invoice usage with tax authorities.
  • Vendor setup: Partner with providers like MISA, Viettel, VNPT.
  • Execution: Use software to issue invoices efficiently.
• Benefits: Reduced costs, fewer errors, faster transactions.

4. Personal Income Tax (PIT): Expected Adjustments

The draft PIT law proposes adjustments to progressive tax brackets, expected to apply from 2026, aiming for greater fairness.

Option 1:

• Up to 10 million → 5%
• 10–30 million → 15%
• 30–50 million → 25%
• 50–80 million → 30%
• Above 80 million → 35%

Option 2:

• Up to 10 million → 5%
• 10–30 million → 15%
• 30–60 million → 25%
• 60–100 million → 30%
• Above 100 million → 35%

Impact: Affects employee net income and payroll processes.

What businesses should do: Update payroll systems to align with new tax brackets once officially enacted.

5. RBox’s Recommendations: Be Proactive to Succeed

2026 is expected to be a year of stricter tax enforcement. This presents both challenges and opportunities for businesses to improve governance and transparency.

• Accurate declarations: Ensure all filings are complete and correct.
• Invoice management: Build a structured system for handling invoices.
• Financial tracking: Monitor revenue and expenses closely.
• Risk prevention: Avoid fraudulent or invalid invoices.
• Expert consultation: Seek professional tax or audit advice when needed.

RBox is committed to continuously updating the latest tax policies, helping businesses adapt and thrive in an evolving environment.

Source: Compiled