Under the newly enacted Law 109/2025/QH15 (effective July 1, 2026, and retroactively applied to the full 2026 fiscal year), foreign-invested enterprises face a complete paradigm shift in how they process payroll. While the Individual Income Tax (PIT) burden technically falls on the employee, the legal reality dictates that your FDI enterprise serves as the state’s Withholding Agent.
If your HR department miscalculates the new tax brackets, applies incorrect gross-up formulas, or forgets to withhold tax from a short-term consultant, the General Department of Taxation (GDT) will not chase the individual workers. They will assess the total tax shortfall, attach an aggressive 0.03% daily late-payment interest, and levy administrative fines directly against your company. Understanding your withholding obligations offers the only defense.
The New 5-Bracket Progressive Tax Rates
The most drastic alteration introduced by Law 109/2025/QH15 collapses the notoriously complex 7-bracket system down to just five progressive brackets. This legislative shift widens the intervals to heavily ease the tax burden on middle-income professionals, directly impacting how you calculate net take-home pay for local talent.
For tax residents generating income from employment, the new marginal rates apply as follows:
| Bracket | Monthly Taxable Income (VND) | Tax Rate | Regulatory Change Note |
|---|---|---|---|
| 1 | Up to 10 million | 5% | Merged previous 5% and 10% lower brackets |
| 2 | Over 10 million to 30 million | 10% | Reduced from old 15% rate |
| 3 | Over 30 million to 60 million | 20% | Reduced from old 25% rate |
| 4 | Over 60 million to 100 million | 30% | Widened the scope of the original 30% bracket |
| 5 | Over 100 million | 35% | Maintained peak high-earner threshold |
A mid-level Vietnamese manager earning VND 40 million gross monthly directly benefits from the lowered 20% rate (previously taxed at 25%), injecting roughly VND 1.5 million back into their net payout without costing the employer additional salary expenditure.
Updated Family Deductions in 2026
To align with modern inflation and the soaring cost of living in primary hubs like Ho Chi Minh City and Hanoi, the government massively expanded statutory tax deductions.
Personal and Dependent Deductions
Every tax resident receives an automatic baseline deduction before a single dong of their salary becomes taxable. Under Law 109/2025, the Personal Deduction soared by 41% to VND 15.5 million per month (VND 186 million annually).
Furthermore, the Dependent Deduction increased to VND 6.2 million per month (VND 74.4 million annually) per individually registered dependent. Qualifying dependents must lack independent, sufficient income streams and typically include minor children under 18, university students lacking income, or elderly parents outside the working age limit.
For an employee legally claiming one dependent child, the combined non-taxable safety net now hits VND 21.7 million monthly. If their gross salary, minus mandatory state insurance deductions, falls below this threshold, you withhold zero PIT. However, to legally apply the dependent benefit to your payroll calculations, the employee must formally submit Form 09-DK-NPT-TNCN alongside supporting birth certificates.
PIT for Foreign Experts (Expats) and the “High-Tech” Exemption
As an FDI enterprise, your foreign experts, engineers, and executives trigger an entirely distinct matrix of PIT regulations contingent on a strict residency test. You cannot simply apply the standard Vietnamese payroll logic to a rotating foreign manager.
Resident vs. Non-Resident Taxpayers
The GDT relies primarily on the 183-day physical presence test to segregate expats into two harsh categories:
- Tax Resident Status: Any foreigner residing in Vietnam for 183 days or more within a calendar year (or 12 consecutive months starting from arrival) achieves resident status. They face tax on their worldwide income, utilizing the standard 5-bracket progressive rates and receiving full access to the 15.5M personal deduction.
- Non-Resident Status: Foreigners present for less than 183 days sit in the non-resident bucket. They suffer a flat 20% withholding tax applied aggressively to all income sourced inside Vietnam, completely losing access to progressive brackets or family deductions.
If your assigned foreign director qualifies as a tax resident in their home nation, you must urgently investigate the application of a Double Taxation Agreement (DTA). A valid DTA prevents the host country and Vietnam from taxing the exact same income stream simultaneously. For detailed year-end procedures, consult our dedicated Expat PIT Finalization Guide.
Beyond PIT itself, the employer-side CIT treatment of expatriate compensation creates a parallel minefield. Housing allowances, international school tuition, and relocation packages must satisfy strict CIT deductible expense rules—including mandatory labor contract documentation and the VND 5 million non-cash payment threshold—or the company loses the deduction entirely.
The 5-Year Exemption for Digital Workforce
As a massive incentive to pivot FDI away from low-skill manufacturing, Law 109/2025 introduced an unprecedented exemption targeting the upper-echelon tech sector.
Foreign experts acting as certified “High-Quality Digital Personnel” in designated fields—specifically semiconductors, artificial intelligence (AI), and deep digital transformation—will receive a complete 5-year PIT exemption starting from their initial employment date in Vietnam. While precise qualification mechanics await an upcoming implementation decree, tech-sector CFOs must prepare to structurally overhaul their expat compensation packages to leverage this sovereign tax immunity.
The Employer’s Withholding Obligations
Understanding tax theory means nothing if your internal accounting team fails the physical execution. The law legally binds you to intercept and transfer the exact tax liability before deploying bank transfers to your workforce.
Standard Salary vs. Freelancer Payments
For standard employment contracts, accountants mathematically deduct the progressive tax rates monthly. However, the most lethal trap for foreign enterprises involves non-employment contracts.
When your company hires temporary consultants, freelance designers, or external board members—where no formal labor contract exists—Decree 126/2020/ND-CP mandates that you immediately withhold a flat 10% tax rate at the source for any single payment exceeding VND 2 million. Skipping this withholding represents the number one finding during field audits. Tax inspectors easily cross-reference the external vendor’s input VAT invoice against your PIT ledger, generating automatic late-payment interest retroactively on every unwithheld transaction.
NET vs. GROSS Salary Contracts
Foreign executives overwhelmingly prefer negotiating NET salaries to guarantee their standard of living, forcing the employer to execute complex “gross-up” calculations mathematically.
Grossing up a NET salary package requires algebraically reverse-engineering the exact progressive tax bracket, compounding the employee’s dependents, and deducting mandatory state insurance ratios to deduce the true GROSS liability. A single mathematical error cascades through the entire 12-month payroll cycle. We highly advise investors strictly negotiate GROSS salary contracts to completely eliminate calculation liability and prevent structural wage inflation when tax laws fluctuate.
Declaration and Year-End Finalization Timetable
Withholding the cash simply represents step one. The state demands rigid, unforgiving reporting timelines to track the captured revenue.
Monthly vs. Quarterly Filings
The aggregation of your total PIT withheld dictates the rhythm of your mandatory filings:
- Quarterly Filings: If the company’s total withheld PIT across the entire workforce falls below VND 50 million in a single month, you qualify to file quarterly. The dossier is due by the last day of the first month of the following quarter.
- Monthly Filings: The second your withheld PIT breaches the VND 50 million threshold in any given month, you permanently trigger mandatory monthly filings, due aggressively by the 20th day of the subsequent month alongside your standard VAT return.
The 90-Day Year-End Finalization
The fiscal year climax arrives during the grueling 90-day finalization window. This process legally reconciles the estimated monthly deductions against the employee’s absolute annualized reality.
Under the law, your company can only process the year-end finalization on behalf of an employee if they meet three absolute criteria:
- They derive employment income exclusively from your enterprise.
- They do not possess external taxable revenue streams (like rental properties).
- They formally sign a written authorization (Form 02/UQ-QTT-TNCN) before December 31st.
If an employee works a second job or joins mid-year, the company absolutely must not finalize their taxes. Instead, the employer issues them a formal Tax Deduction Certificate (Form CTT50/AC), forcing the individual to interface directly with the tax authority.
Top 3 Expensive PIT Mistakes by Foreign Employers
During our management of hundreds of FDI compliance audits, three identical, devastating errors repeatedly surface:
- Ignoring the 10% Freelance Trap: Disbursing total consulting payments without aggressively siphoning the mandatory 10% source tax.
- Gross-Up Malpractice: Utilizing outdated Excel formulas that miscalculate the exact progressive bracket thresholds, leading to massive under-reporting of true taxable income over a 12-month cycle.
- Illegal Annual Finalization: Unlawfully authorizing the year-end finalization for an employee harboring dual income sources. The tax authority actively rejects the dossier, forcing an immediate refiling and levying severe administrative penalties against the company for “false declaration.”
ICLV Payroll and PIT Services
Relying on internal staff to manually intercept the new Law 109/2025 brackets, calculate dynamic expat residencies, and execute complex NET-to-GROSS algorithms practically guarantees expensive audit failure.
Our Certified CPAs and HR compliance team at ICLV serve as your outsourced shield. Through our payroll management service, we manage the entire PIT lifecycle—from drafting secure GROSS employment contracts and running flawless monthly payroll execution through to absorbing the legal liability of your 90-day year-end tax finalization. Connect with our tax compliance directors to structurally safeguard your payroll operations immediately.