Foreign Contractor Tax (FCT) Vietnam 2026: Withholding Guide

Foreign Contractor Tax (FCT) is the withholding tax when paying contractors abroad: it combines VAT (1% - 5%) and CIT (0.1% - 10%) on payments to foreign contractors, with or without a permanent establishment in Vietnam (those without one usually pay under the Direct Method). The withholding obligation sits with the Vietnamese corporate buyer, and a per-occurrence declaration is due by the 10th day after the day the tax obligation arises (Article 10 of Decree 252/2026/ND-CP). Late remittances incur 0.03% daily interest and under-declarations face a 20% penalty on the tax shortfall, as Section 6 sets out. FCT is one part of the wider Vietnam tax system that FDI enterprises manage.

FCT in Vietnam operates under the Law on VAT 48/2024/QH15 (Decree 181/2025/ND-CP, Circular 69/2025/TT-BTC), the Law on CIT 67/2025/QH15 (Decree 320/2025/ND-CP, Circular 20/2026/TT-BTC), and filing procedures under Circular 89/2026/TT-BTC, which repealed Circular 103/2014/TT-BTC from July 1, 2026. Knowing how these rules interlock prevents costly withholding errors and protects expense deductibility. This guide covers rates, calculation methods, Net and Gross contracts and treaty relief. For the tax code and dossier side, see foreign contractor tax registration.

1. Executive Summary and Key Regulatory Milestones

• FCT operates under the guidance of the Law on VAT and the Law on CIT cited above; Circular 103/2014/TT-BTC is repealed from July 1, 2026.
• Direct Method deemed rates in the table below combine to between 5% (for example construction with materials: 3% VAT + 2% CIT) and 10% (general services: 5% VAT + 5% CIT).
• Cross-border digital services: foreign providers register and declare directly in the tax management information system; a Vietnamese buyer using the VAT deduction method that purchases on an e-commerce platform withholds and pays on the provider’s behalf when it pays.
• Per-occurrence declarations: file by the 10th day after the day the tax obligation arises.
• Net contracts require Gross-up formulas; under-withholding triggers back taxes, a 20% penalty, and 0.03% daily interest.

2. Three Methods for FCT Calculation

FCT calculation follows one of three methods depending on the contractor’s operational presence in Vietnam. Direct Method is the standard default for offshore contractors without a permanent establishment (PE). Deduction Method applies to contractors with a PE and Vietnamese Accounting Standards (VAS)-compliant books. Hybrid Method combines credit-invoice VAT with deemed CIT rates.

1. Direct Method (Deemed Percentage on Revenue)

The Direct Method applies fixed percentages directly to gross contract revenue without requiring local accounting books or audits. The Vietnamese payer withholds FCT upon settlement, remits to the State Treasury, and files Form 01/NTNN with its own tax office (see tax declaration procedures). This generally settles the offshore vendor’s tax, apart from a final settlement return when the contract ends if the declared tax changes (Circular 89/2026/TT-BTC).

Under Circular 69/2025/TT-BTC (VAT) and Decree 320/2025/ND-CP with Circular 20/2026/TT-BTC (CIT), deemed percentages apply as follows:

The rates in the table do not apply to services supplied through e-commerce channels and digital platforms. Those cases follow the foreign-provider mechanism in Section 3.

2. Deduction Method (Actual Profits with VAS Compliance)

The Deduction Method taxes actual net profits. Contractors with a registered PE calculate CIT at the standard 20% rate, or 15%/17% if they meet the revenue conditions in Article 11 of Decree 320/2025/ND-CP (see Vietnam corporate tax rules) on taxable income declared from revenue and expenses.

Eligibility requires meeting two conditions:

1. Being a foreign organization with a permanent establishment in Vietnam (Article 21 of Decree 181/2025/ND-CP).
2. Keeping full accounting, invoice and document records, with books under Circular 99/2025/TT-BTC.

CFO Advisory: The Deduction Method pays off mainly on large, long-running contracts. For smaller engagements, the cost of a certified Chief Accountant and the bookkeeping workload can exceed the tax difference.

3. Hybrid Method (Credit VAT + Deemed CIT)

The Hybrid Method allows contractors to claim input VAT credits while paying CIT at deemed rates on gross revenue. The contractor registers for tax directly with the tax authority, issues electronic VAT invoices, deducts input VAT on domestic purchases, and remits net output VAT. CIT is declared at deemed rates under Circular 89. For contracts signed before March 12, 2026 under the hybrid method of Circular 103/2014/TT-BTC, CIT continues under the rules in force at signing (Circular 20/2026/TT-BTC).

This structure is ideal for contractors with substantial domestic subcontracting or materials procurement in Vietnam that wish to avoid full VAS profit accounting audits.

3. Cross-Border Digital Services and SaaS: The Self-Declaration Mechanism

Cross-border digital services (cloud hosting, enterprise SaaS, Google, Meta, AWS, Microsoft) operate under Article 40 of Decree 252/2026/ND-CP and Circular 89:

1. Foreign Supplier Direct Declaration: Foreign providers register for tax through the tax management information system (web portal etaxvn.gdt.gov.vn), declare and pay directly or through an authorized agent, monthly if they trade regularly and per occurrence otherwise. A provider whose VAT is already deducted by a Vietnamese buyer using the deduction method, or withheld by the platform host, does not need to register separately when all revenue arising in Vietnam has been withheld and paid on its behalf.
2. Local Buyer Withholding Obligation: A Vietnamese business using the VAT deduction method that buys goods or services from a foreign provider on an e-commerce platform withholds and pays VAT (on services) and CIT on the provider’s behalf at the time of payment. If it has already withheld, it notifies the platform electronically so the same transaction is not withheld twice. Outside a platform, a Vietnamese party that contracts directly with a foreign contractor paying tax under the Direct Method withholds and pays VAT and CIT on the contractor’s behalf and files with its own tax office.

4. Withholding Tax When Paying Contractors Abroad: Net vs. Gross Formulas

Cross-border contracts often stipulate payments “net of all Vietnamese taxes.” Payers must gross up the net amount; applying deemed rates directly to net amounts causes tax underpayment.

Illustrative Gross-up Example (Sequential Calculation)

The example below grosses up a net contract in this sequence:

1. Revenue for CIT = Net Contract Amount / (1 - Deemed CIT Rate)
2. Revenue for VAT = Revenue for CIT / (1 - Deemed VAT Rate)
3. Total CIT Withheld = Revenue for CIT × Deemed CIT Rate
4. Total VAT Withheld = Revenue for VAT × Deemed VAT Rate

The regulations only set a conversion formula for each tax separately (Article 9 of Circular 69/2025/TT-BTC for VAT, Article 7 of Circular 20/2026/TT-BTC for CIT). Confirm with the managing tax office how the two steps combine.

Case Comparison: USD 100,000 Consulting Contract (5% VAT + 5% CIT)

Note: In Scenario B, the remitted VAT of USD 5,540.17 is creditable as input VAT for deduction-method entities. Remitted CIT of USD 5,263.16 is assessed under the deductible-expense conditions in current regulations; see corporate tax deductible expenses.

💡 Operational Advisory by Indochina Link Vietnam: When drafting cross-border service agreements on a Net contract basis, state which party bears the tax. For Double Taxation Avoidance (DTA) treaty claims, ICLV recommends securing a consular-legalized or apostilled Tax Residency Certificate (Apostille available for Convention member states from September 11, 2026) and submitting Form 01/HTQT together with the first tax declaration, preventing tax authorities from retroactively disqualifying treaty exemptions.

5. Tax Treaty Benefits and DTA Exemption Procedures

Double Taxation Agreements reduce CIT withholding rates for treaty-resident contractors without a PE in Vietnam (covering many jurisdictions). Treaties with Japan, Korea, Singapore and other partners generally exempt the business profits of a contractor without a PE and cap withholding on royalties and interest. Check the specific treaty.

To claim treaty benefits, the taxpayer must file Form No. 01/HTQT along with a consular-legalized Certificate of Tax Residency, together with the first tax declaration, to the tax office directly managing the Vietnamese party or the tax office where the foreign contractor registers to pay tax (Article 78 of Circular 89/2026/TT-BTC). From September 11, 2026, documents bearing an Apostille from a Convention member state are exempt from consular legalization (Decree 293/2026/ND-CP).

Enterprises should obtain the residency certificate before the first payment to avoid cash flow tie-ups from paying domestic rates upfront and seeking subsequent refunds. Contractors with a local PE must also identify related-party transactions subject to transfer pricing rules.

6. Penalties, Audit Risks, and Practical Checklist

FCT non-compliance triggers three consequences:

1. Under-declaration Penalty: A 20% administrative fine on underpaid tax (Article 44 of the Law on Tax Administration 108/2025/QH15). No fine applies if the payer files a supplementary return and pays in full before an inspection decision is announced.
2. Late Payment Interest: Accrues at 0.03% per day on outstanding balances (Article 16 of the Law on Tax Administration). A 180-day delay incurs 5.4% in cumulative interest.
3. Expense Deductibility: Keep evidence that the FCT was declared and paid, whether by the Vietnamese buyer or by the provider declaring directly. Payments without that evidence are assessed under the deductible-expense conditions in current regulations when CIT is finalized.

Common Violations and Required Records

Common audit exposure stems from paying foreign contractors without segregating FCT, misclassifying contractors with PEs under the Direct Method, and omitting Gross-up formulas on net agreements.

Retain the following records for the period required by the accounting and tax administration laws:

• Legalized/apostilled foreign contractor business registration certificate.
• Commercial contract with explicit payment schedules and FCT allocation clauses.
• State Treasury payment receipts for FCT Form 01/NTNN.
• Documentation supporting method election and consular-legalized or apostilled DTA notifications (if applicable).

5-Point Compliance Checklist:

1. Determine PE status and appropriate FCT method prior to contract signing.
2. Draft clear Net or Gross pricing terms with accurate Gross-up formulas.
3. Collect vendor business registrations and residency certificates before the first payment.
4. Schedule withholding tax filing and remittance by the 10th day after the tax obligation arises.
5. Retain official tax receipts to safeguard VAT credits and CIT corporate expense deductibility.

Contact our Certified CPAs and tax compliance team for help with foreign contractor tax compliance, method selection analysis, treaty benefit filings, and tax inspection support. Contact our advisors for technical guidance.

Related resources: foreign contractor tax registration | related-party transactions | electronic invoices in Vietnam

This guide reflects Vietnamese tax legislation including Circular 69/2025/TT-BTC, Circular 20/2026/TT-BTC, Circular 89/2026/TT-BTC, Law on Tax Administration 108/2025/QH15, Decree 252/2026/ND-CP, Law on VAT 48/2024/QH15, Law on CIT 67/2025/QH15, Decree 181/2025/ND-CP, Decree 320/2025/ND-CP, and Decree 125/2020/ND-CP (as amended by Decree 310/2025/ND-CP). Updated October 2026.