Billing a client abroad in foreign currency does not by itself make the supply zero-rated. For professional services a reciprocity condition applies, and it is decided by where your client is — which is why the treatment that was right for your first market can be wrong for the second.
A consultancy in Korea invoices a client in London, is paid in pounds, and applies zero-rated VAT. Correct. The same firm wins a client elsewhere, does the same thing, and is assessed. The difference is not the service, the currency or the invoice — it is a proviso attached to professional services that makes the answer depend on the client's country.
Services supplied to a non-resident and paid for in foreign currency can be zero-rated where they fall within listed categories. One of those categories is professional, scientific and technical services, and management consulting sits inside it. The relevant ministerial ruling confirms that management advisory services paid for in foreign currency come within the provision.
But a proviso applies to professional services within that category (and to two other listed categories): zero-rating is available only where the client's country grants the same exemption to Korean residents and Korean companies.
Management consulting falls within the professional services classification for this purpose. So the proviso is engaged — and the analysis moves from “is my client abroad?” to “which country is my client in, and what does that country do to Korean suppliers?”
The tax authority publishes a list of qualifying countries in a basic ruling — a few dozen jurisdictions covering most markets a Korean consultancy would ordinarily serve. The United Kingdom and Australia, for example, both appear on it and have the same standing.
The list is strong protection, but it is not the whole analysis. Korean tribunals have held that a basic ruling is not law and that this list is illustrative rather than exhaustive. That cuts in both directions:
| Your client's country | Position |
|---|---|
| On the list | Zero-rating is well supported. This is the comfortable case |
| Not on the list | Not automatically fatal — but you must show that the country does not in fact tax the equivalent Korean supply. That is a question of evidence about foreign law |
In a decided case, the client's country was absent from the list and that country did in fact tax the equivalent supply. Zero-rating was denied and the assessment upheld. The taxpayer was not careless about the invoice or the currency; the country had simply changed.
This is why reciprocity belongs in the client onboarding checklist, not in the VAT return.
Cross-border expansion is exactly the moment this goes wrong. The treatment established for the first market is assumed for the next, because nothing about the service, the contract or the payment looks different. Only the country changed — and the country is the variable the rule turns on.
Zero-rating also depends on the consideration being received in a prescribed way. Broadly: foreign currency remitted and sold to a foreign exchange bank, or deposited into a foreign currency account with the appropriate certificate of receipt. Payments that arrive outside those routes invite challenge, however genuine the underlying supply.
In a decided case, payments had been received into accounts in the names of a director and an officer's spouse. The taxpayer ultimately succeeded — the tribunal accepted that the funds were under the company's management and control and that the substance matched the arrangement.
But it succeeded only after an assessment and a tribunal claim. The cost of winning that argument is many times the cost of opening the right account in the first place.
If you have just incorporated after operating as a sole proprietor, move the receiving route immediately. Continuing to take client payments into a personal account after the company starts invoicing is precisely the fact pattern that produces the assessment. It is an administrative step measured in minutes, and it prevents a dispute measured in years.
Two standing checks rather than an annual scramble. First, before accepting work from a new country, confirm the reciprocity position for that jurisdiction — on the list, or evidenced. Second, confirm that every client's payment route matches the prescribed methods and lands in an account in the supplying entity's own name.
Both are cheap while the relationship is being set up and expensive afterwards. We build them into ongoing compliance for clients serving overseas markets from Korea, and we advise in English throughout.
Basis. This note reflects the Value-Added Tax Act and its Enforcement Decree provisions on zero-rating services supplied to non-residents and paid for in foreign currency, including the listed professional, scientific and technical services category and the reciprocity proviso attaching to professional services; a Ministry of Economy and Finance ruling confirming management advisory services within that provision; the National Tax Service basic ruling listing qualifying countries, together with tribunal decisions holding that ruling to be illustrative rather than binding and a decision denying zero-rating where the client's country was absent from the list and taxed the equivalent supply; and the Enforcement Rule provisions on prescribed methods of receiving consideration, with a decision on receipt through accounts not in the supplier's name. It is general information as at September 2026, not advice on a specific situation — the position varies by country. Please take advice before acting.
Not automatically, and the exception is easy to fall into. Services in the professional, scientific and technical category can be zero-rated when supplied to a non-resident and paid in foreign currency — but a proviso attaches to professional services within that category: zero-rating applies only where the client's country grants the same exemption to Korean residents and Korean companies. Management consulting falls inside the professional services classification, so the proviso applies. Whether you can zero-rate therefore depends on which country your client is in, not merely on the fact that the client is abroad and paid in dollars.
The tax authority publishes a list of countries in a basic ruling, running to a few dozen jurisdictions and including most of the markets a Korean consultancy would ordinarily serve. But the list is not the end of the analysis. Korean tribunals have held that a basic ruling is not law and that the list is illustrative rather than exhaustive. In practice that cuts both ways: being on the list is strong protection, and being absent from it is not automatically fatal — but you then have to show that the other country does not in fact tax equivalent Korean suppliers.
It becomes a question of fact about that country's treatment, and the outcome can go against you. In a decided case the taxpayer's client was in a country absent from the list, and the other country did in fact tax the equivalent supply; zero-rating was denied and the assessment upheld. The practical conclusion is that reciprocity should be checked before you accept work from a new country, not when the VAT return is prepared. Expanding a client base across borders is exactly the moment this goes wrong — the treatment that was correct for your first market is simply assumed for the next one.
Yes, and this is where otherwise good positions get lost. The rules prescribe how the consideration must be received — broadly, foreign currency remitted and sold to a foreign exchange bank, or deposited into a foreign currency account with the appropriate certificate of receipt. Money that arrives outside those routes invites challenge. In one decided case payments had been received into accounts in the names of a director and an officer's spouse; the taxpayer ultimately succeeded, on the basis that the funds were under the company's management and control and the substance matched — but only after assessment and a tribunal claim. Winning that argument is expensive; arranging the receiving account correctly costs nothing.
One thing, immediately. If you were previously receiving client payments into a personal account as a sole proprietor, that route has to move to a corporate foreign currency account at the moment the company starts invoicing. Continuing to receive into the personal account is precisely the fact pattern that produced the assessment described above. It is a five-minute administrative step that prevents a multi-year dispute.
Tell us which countries your clients are in and how you are paid. Reciprocity and the receiving route are both cheap to fix now and expensive to fix later.