When buying capital from a foreign investor with no presence in Vietnam, the Vietnamese buyer is usually not just the payer — they are the transaction’s withholding agent, with their own legal liability if withholding falls short. This article clarifies who must withhold in each deal structure, how much to withhold per seller category, the per-transaction declaration and payment procedure, and the consequences when a buyer forgets or withholds wrongly.
1. Who withholds: determined by the deal structure
The collection mechanism for capital transfer tax of a foreign seller with no permanent establishment/legal presence in Vietnam operates through withholding at source. The withholding subject is determined by each deal’s structure: the most common case — the buyer is a Vietnamese organisation paying the capital price to the foreign seller: the buyer withholds the tax from the very payment before remitting it to the seller, declares and pays it to the budget on the seller’s behalf. Where the buyer is also a foreign organisation: the Vietnamese enterprise whose capital is transferred is the endpoint performing the corresponding withholding and declaration, being the Vietnamese subject attached to the transaction and to the member/shareholder change file. Where the seller is a non-resident individual selling to a domestic individual/organisation: the Vietnamese paying organisation (an organisational buyer, or the related enterprise) performs the 0.1% PIT withholding under the non-resident mechanism. The key point to lock in the transfer agreement: the tax clause must name the withholding subject expressly, the withholding moment (at each payment instalment), and that the withheld amount is a part of the transfer price retained for the budget — not an amount the buyer “pays on top of the price”, unless the parties agree a net price where the buyer economically bears the tax (gross-up), in which case the tax base must be grossed up as prescribed.
2. How much to withhold: two mechanisms by seller category
The seller is a foreign organisation: CIT at 20% on the transfer income under the Law on Corporate Income Tax 67/2025/QH15 — income = transfer price − cost basis of the portion sold − documented reasonable transfer expenses. This is withholding on income, not on price: the withholding party therefore needs the seller’s cost basis file (capital contribution/acquisition documents of prior rounds) to determine the correct withholding amount; if the seller cannot produce the cost basis file at payment time, the safe practice is agreeing a tax holdback until the file completes and the tax is fixed with the tax authority, rather than withholding on an unproven cost basis. The seller is a non-resident individual: PIT at 0.1% of the total transfer price per transaction under the Law on Personal Income Tax 109/2025/QH15 — no cost basis or expense deduction, so the withholding amount is determined right on the agreement. Where the seller falls under a double tax agreement with different taxing-right provisions, treaty application (if there is a basis for exemption/reduction in Vietnam) must run through the treaty notification/application procedure before the withholding moment under the Law on Tax Administration 108/2025/QH15 — the buyer may not skip withholding based merely on the seller’s verbal statement about a treaty.
3. Declaration and payment procedure: per transaction, a 10-day deadline
Withheld capital transfer tax is declared per transaction occurrence: the withholding party prepares the transaction’s tax return (in the form applicable to capital transfer withholding/foreign investor tax respectively), files it with the managing tax authority within the per-occurrence filing deadline — no later than the 10th day from the date the tax obligation arises under the current tax administration regime — and remits the withheld tax to the budget in the same period. The “arising date” in a transfer deal attaches to the transfer completion/payment moment per each category’s mechanism; for multi-instalment deals, the declaration and withholding duty arises correspondingly at each payment instalment on that instalment’s price portion. The file retained at the withholding party comprises: the transfer agreement, the seller’s cost basis and expense documents (for foreign organisations), payment evidence through the ICA/banking channel, the return and the tax payment voucher. The payment voucher must then be handed to the seller — the document for the seller’s home-country tax credit and for the enterprise to close the member/shareholder change file and the deal’s bank cash flow. In deal-completion practice, the safe order is: fix the withholding mechanism and subject in the agreement → withhold at payment → declare/pay within the 10-day limit → use the tax voucher to close the remaining recognition procedures.
4. No withholding or under-withholding: the buyer’s liability
The withholding duty is the withholding party’s own legal duty, not “the seller’s chore done as a favour”. The consequences of no or insufficient withholding under the tax administration regime: the authority back-collects the unwithheld tax from the party bearing the withholding duty, with late payment interest on the late amount and administrative tax penalties for the failure to withhold/declare correctly. The buyer therefore cannot protect themselves with the argument “that was the seller’s tax” — having paid the full price without retaining the tax, the buyer still owes that tax to the budget and is left with only the contractual route to recover it from the foreign seller (a route usually difficult and costly across borders). This is why tightly drafted capital transfer agreements always carry: a withholding clause allowing the buyer to retain all taxes required to be withheld under Vietnamese law from any payment instalment; a clause making the seller’s cost basis file cooperation a condition precedent of the main payment instalment; a seller tax indemnity for back-assessments arising from a wrong cost basis file; and an escrow/holdback mechanism on a portion of the price until the final tax voucher is in hand. In short: in a deal buying capital from a foreign seller, tax withholding is not a side administrative procedure — it is part of the buyer’s payment obligation, and designing it correctly in the agreement is the only way the buyer avoids becoming an unwilling substitute taxpayer.
I buy capital from a foreign organization — must I withhold tax on the seller’s behalf?
Yes, in the usual structure: a Vietnamese organisational buyer paying the capital price to a foreign organization with no presence in Vietnam must withhold CIT on the seller’s transfer income before payment, and declare and remit it to the budget on the seller’s behalf. If the buyer is also a foreign organisation, the Vietnamese enterprise whose capital is transferred is the corresponding withholding/declaration endpoint. The agreement’s tax clause must name the withholding subject expressly and the withholding moment at each payment instalment.
What is the withholding rate, and which return form is used?
By seller category: a foreign organisation bears CIT at 20% on the transfer income (transfer price minus the cost basis of the portion sold and documented reasonable expenses) under the Law on Corporate Income Tax 67/2025/QH15 — withholding on income, not on price; a non-resident individual bears PIT at 0.1% of the total transfer price under the Law on Personal Income Tax 109/2025/QH15. Declaration uses the per-transaction return applicable to capital transfer withholding/the foreign party’s tax respectively, filed with the managing tax authority with the transaction documents.
If I do not withhold on the seller’s behalf, am I penalised in the seller’s place?
You are handled under your own liability as the party bearing the withholding duty: the tax authority back-collects the unwithheld tax from you, with late payment interest and administrative tax penalties for failure to withhold/declare correctly under the Law on Tax Administration 108/2025/QH15. The argument “that was the seller’s tax” does not protect a buyer who paid the full price without retaining the tax; recovering it from the foreign seller afterwards is only a contractual route, usually difficult. Agreements therefore need withholding, tax indemnity and price holdback clauses.
What is the deadline for declaring and paying the withheld tax?
Withheld capital transfer tax is declared per transaction occurrence: the withholding party files the transaction’s return and remits the tax to the budget no later than the 10th day from the date the tax obligation arises, under the per-occurrence filing regime (Law on Tax Administration 108/2025/QH15). For multi-instalment deals, the duty arises correspondingly at each payment instalment. The tax payment voucher must be handed to the seller for home-country credit and to close the transaction file.
