Scenario: you’re a Vietnamese engineer hired remotely as a consultant by a German company; fees paid in Germany suffer 15% withholding there. The Vietnam–Germany treaty allows a lower withholding — but Germany asks: “prove you’re a Vietnamese tax resident.” Prove it with what?
With a tax residency certificate
A Certificate of Tax Residence is issued by the tax authority, confirming an individual/organization is a tax resident of the issuing country for a given tax year. Your case: ask Vietnam’s tax authority to certify you’re a Vietnamese tax resident for 2026 → send it to Germany → enjoy the treaty-reduced withholding instead of 15%.
The reverse applies too: foreigners claiming treaty benefits in Vietnam (employment exemption, reduced dividend/royalty tax) need a residency certificate from their home country attached to the relief notification in Vietnam. Without this paper, every treaty benefit hangs.
Dossier in Vietnam
- Written request for the certificate (stating the tax year and the country of use);
- Proof of Vietnamese tax residency for that year: labor contract, temporary/permanent residence confirmation, passport with entry/exit stamps showing presence…
- File with the directly managing tax authority (where your tax code is registered).
Three things to remember
- Per-year validity: the certificate covers a specific tax year — multi-year use means applying each year (no “permanent” certificate).
- Apply early: processing takes time; waiting until the foreign payer is about to pay misses the reduced-withholding window — reclaiming over-withheld tax is far more painful.
- Not a tax-paid proof: the certificate only evidences residency status for treaty purposes, not that tax was fully paid.
Frequently asked questions
What is a tax residency certificate for?
Proving tax residency of one country to claim DTA benefits in the other (reduced withholding, exemptions…).
Where to apply in Vietnam?
At the directly managing tax authority (tax-code registration place), with a written request and residency evidence for the requested year.
How long is it valid?
For the certified tax year — reapply each year of use; no permanent certificate exists.
Do foreigners need one for Vietnamese treaty benefits?
Yes — a certificate from their home country, attached to the relief notification in Vietnam. Without it, no treaty benefits.
This article has been quality-reviewed by the FLAW AI Legal Council Content prepared by the AI Legal Council of FLAT Law Firm for general reference only; it has not been reviewed by a human lawyer for your specific situation.