CORPORATE TAX GUIDE · UPDATED SEPTEMBER 2026
Withholding tax in Singapore: when paying an overseas vendor triggers it, and when it does not
Most companies ask the wrong question. It is not “is my supplier overseas?” — it is “what kind of payment is this, and where was the work done?” Answer those two and most of a modern SME’s foreign spend turns out to carry no withholding tax at all. But the payments that do trigger it are rarely the ones people expect, the clock starts earlier than anyone thinks, and when you get it wrong the tax comes out of your pocket, not the vendor’s.
THE TEST
Two questions decide it.
Withholding tax applies when a payer makes a payment of a specified nature to a non-resident. Both halves have to be true. A payment to a foreign company for something that is not on IRAS’s list is outside the charge entirely, and so is a payment on the list made to a Singapore tax resident.
A company is non-resident where its business is not controlled and managed in Singapore. Incorporation does not settle it: a company registered abroad but run from here can be resident, and foreign ownership of a Singapore company does not make it non-resident. An individual is non-resident if they are in Singapore for fewer than 183 days in a calendar year.
For services, a third question follows: the charge only reaches fees attributable to work done in Singapore. That is the sentence that decides most SME cases, and it usually decides them in your favour.
WHAT TRIGGERS IT
The payments and the rates.
| Payment to a non-resident | Rate | In practice |
|---|---|---|
| Interest, commissions or fees in connection with any loan or indebtedness | 15% | The one SMEs miss: a loan from an overseas parent, director or shareholder. |
| Royalties or lump sum payments for the use of movable property, including intellectual property | 10% | Licensing software, a brand or a patent from a foreign owner. |
| Use of, or the right to use, scientific, technical, industrial or commercial knowledge or information | 10% | Know-how payments, as distinct from someone performing a service for you. |
| Rent or other payments for the use of movable property | 15% | Equipment leased from overseas and used here. |
| Technical assistance and service fees; management fees | 17% | The prevailing corporate income tax rate, on the gross fee attributable to work done in Singapore. Not a final tax. |
| Royalties and other payments to an author, composer or choreographer | 24% | 22% only for payments from 1 January 2016 to 31 December 2022. |
| Non-resident director's fees | 24% | 22% only up to 31 December 2022. Guides still quoting 22% are three years stale. |
| Non-resident professional (an individual or unincorporated firm) | 15% of gross | Or 24% of net income if the professional elects to be taxed on net. The 24% applies to income due and payable on or after 1 January 2023. |
| Non-resident public entertainer | 15% of gross | Speakers, performers and similar engagements carried out in Singapore. |
The 15% and 10% rates apply where the non-resident derives the income through operations carried on outside Singapore. Applied to the gross payment, the tax is then a final tax — nothing further is assessed. Where the operations are carried out in Singapore, the prevailing corporate rate applies for non-individuals instead, and that tax is not final: the vendor can put in certified accounts and a tax computation, and IRAS refunds anything withheld above the tax on the net income.
Also caught, and worth knowing exist even if they rarely reach an owner-managed company: payments for real property bought from a non-resident property trader, distributions from a real estate investment trust, and payments from structured products.
WHAT DOES NOT
Most of your foreign spend, probably.
Companies routinely over-worry about this and occasionally over-withhold, which sours the vendor relationship and takes months to unwind. Four situations where there is nothing to withhold and nothing to file:
Services delivered electronically from overseas
IRAS states it plainly: if the non-resident provides the services by electronic means from overseas — internet presentation, email, telephone — without sending staff to Singapore, the services are rendered outside Singapore and withholding tax is not applicable. That covers the bulk of a modern SME's foreign spend: cloud and SaaS subscriptions, an offshore development team, an overseas marketing agency, a designer in another country. No withholding, no S45 filing.
Buying goods
Payments for goods are not on the list of payments subject to withholding tax. The only property purchase that is caught is real property bought from a non-resident property trader.
Paying a company that is tax resident in Singapore
Withholding tax applies to payments to non-residents. A company is Singapore tax resident where its business is controlled and managed — the place of incorporation does not decide it. Foreign ownership alone does not make your supplier non-resident.
The overseas portion of a mixed engagement
Where a consultant does part of the work here and part abroad, withholding tax applies to the fees attributable to the work done in Singapore. The rest is outside the charge. Apportion it on a defensible basis and keep the working — this is exactly what IRAS asks to see.
The flip side: the trigger nobody sees coming.
If none of your service vendors are caught, do not close the file yet. The most frequently missed withholding tax in owner-managed groups is not a vendor payment at all — it is interest on funding. Interest, commissions and fees in connection with any loan or indebtedness paid to a non-resident are withheld at 15%, and that includes servicing a loan from an overseas parent, a foreign shareholder or a director who lives abroad. Nobody thinks of a loan repayment as a payment to a vendor, so nobody checks it.
Directors’ fees are the second. Where a director is non-resident, fees are withheld at 24%, and for fees approved in arrears the clock starts on the date the members approve them at the AGM — not the date they are paid.
THE CLOCK
The 15th of the second month — from a date you did not choose.
You must file and pay by the 15th of the second month from the date of payment to the non-resident. The trap is that “date of payment” is a defined term, and it is the earliest of three dates:
- 01When the payment is due and payable under the agreement or contract — or, where there is no agreement, the date of the invoice. Credit terms are not taken into consideration.
- 02When the payment is credited to the non-resident's account, or any other account they designate.
- 03The date of actual payment.
Read that again, because it is where the money goes. The date you settle the invoice is only one of the three candidates, and it is usually the latest. Here is a payment that most finance teams would consider handled on time:
| Technical assistance fee, work done in Singapore | Date |
|---|---|
| Vendor's invoice is dated (30-day terms) | 26 March |
| You actually pay the vendor | 30 May |
| IRAS's “date of payment” — credit terms are ignored | 26 March |
| Withholding tax must be filed and paid | 15 May |
The company paid its supplier inside terms and was still two weeks late with IRAS. Nothing in the bank statement would tell you. This is why withholding tax belongs in the bookkeeping process at the point an invoice is recorded, not at the point it is paid — the accounts payable ledger already holds the date that matters.
Filing mechanics.
- File through the S45 digital services on mytax.iras.gov.sg using Singpass. Paper filing has not been allowed since 1 July 2016 and failing to e-file is an offence under section 94(2) of the Income Tax Act.
- There is no charge for using the S45 digital services.
- If you are on GIRO for withholding tax, the deduction date is the 25th of the month the tax is due, moving to the next working day if that falls on a weekend or public holiday.
- Got it wrong? Records submitted within the last two back years can be corrected at myTax Portal under S45 › View/Amend S45 Form.
- Where the 17% service-fee rate over-withholds, the non-resident can submit certified accounts and a tax computation, and IRAS refunds the excess over the tax on net income. Keep the payer's details, the nature of the payment, the date, the period covered and the gross amount with that computation.
IF YOU MISS IT
What late withholding tax costs.
5% late payment penalty
Imposed if payment is not received by the due date. IRAS's own example: a gross royalty of S$10,000 paid on 7 April means S$1,000 of tax due by 15 June; filing and paying on 28 June attracts a S$50 penalty.
Then 1% a month, up to 15%
If the tax is still unpaid 30 days after the due date, an additional 1% may be added for every completed month it remains unpaid, capped at 15% of the unpaid tax. IRAS's example: S$7,000 due 15 July, paid 25 October, gives S$490 — the 5% plus two completed months at 1%.
The tax is yours, not the vendor's
The obligation to withhold and remit sits on the payer. If you paid the vendor the full invoice and withheld nothing, IRAS looks to you for the tax. You can try to recover it from the vendor commercially, but that is your problem, not IRAS's.
Bearing the tax costs more than the headline rate
If the contract says the non-resident receives the fee net of tax — so you absorb the withholding — the tax is computed on a re-grossed basis. A S$10,000 net fee to a consultancy in a non-treaty country for work done here is re-grossed to S$12,048.19, and the tax is S$2,048.19, not S$1,700.
Note how the third and fourth points compound. A company that never withheld has no vendor deduction to hand over, so it is bearing the tax — which means the re-grossed amount — and it is late, so the penalties run on the larger number. A 17% obligation ends up closer to a quarter of the fee. Finding this yourself and filing late is materially cheaper than IRAS finding it.
TREATY RELIEF
A treaty lowers the rate. It does not remove the filing.
This is the second-most-common failure after the date-of-payment trap, and it catches the companies that did their homework. Someone establishes that the vendor’s country has a Double Taxation Agreement with Singapore, concludes that nothing is payable, and files nothing. The rate was right; the conclusion was wrong.
- File the S45 even when the payment is fully exempt. IRAS is explicit: withholding tax must be filed even if the payment is exempted under a Double Taxation Agreement or the Approved Royalties Incentive. “The treaty covers it” is not a reason to file nothing.
- Tick the Double Taxation Relief box when you file, so the lower rate is applied at source rather than reclaimed later.
- Get the original Certificate of Residence from the vendor, for each year relief is claimed. No COR, no relief.
- Relief needs the income not to be effectively connected with a permanent establishment in Singapore. Where a non-resident company does have a permanent establishment here, service fees are generally withheld at 17% on the gross.
- Declaring the wrong relief can attract late payment penalties, so confirm the treaty position before you tick the box, not after.
- Singapore has no comprehensive treaty with the United States or Hong Kong — two of the most common places an SME's vendors sit.
OUT OF DATE ELSEWHERE
Three things the older guides still get wrong.
Withholding tax content ages badly, and much of what ranks for these searches was written before 2023 and never revisited. If you are checking your position against another guide, check these three first.
Reimbursed airfares, hotels and meals
The administrative concession that kept withholding tax off reimbursements of accommodation, meals and transportation at actual cost with no mark-up is expressly limited to amounts liable to be paid on or before 31 October 2022. Many guides still present it as current. For later payments, treat the reimbursement as part of the taxable service fee unless you have advice to the contrary.
Cost-pooling reimbursements to a related party
The same 31 October 2022 cut-off applies to cost reimbursement payments to a non-resident related party for services rendered in Singapore under a cost-pooling arrangement.
The 22% rates
22% for non-resident directors' fees, and for a non-resident professional taxed on net income, applied only up to 31 December 2022. Both are 24% now. A guide quoting 22% is telling you about a rate that ended before the last three years of accounts were filed.
How we handle it.
Withholding tax is not really a tax problem — it is a bookkeeping problem with a tax deadline attached. Everything that decides it lives in the purchase ledger: who the supplier is, what the payment is for, where the work was done, and the invoice date. By the time a payment run happens the answer has already been determined; nobody has just written it down.
So we flag foreign suppliers when they are first set up, classify the payment type once rather than every month, and take the date of payment from the invoice rather than the bank feed. Recurring items — an intercompany loan, a licence fee, a non-resident director’s fees — go on the calendar with their own two-month clock. Where a treaty applies, we ask the vendor for the Certificate of Residence before the first payment, not in the week the filing is due.
If you have been paying overseas suppliers for a while and have never filed an S45, that is worth looking at before it compounds. The exposure is usually smaller than feared — most of the spend turns out to be services rendered outside Singapore — but the pieces that are caught tend to be recurring, which means the same missed filing repeated across years. A review of one year of supplier payments normally settles it.
Common questions.
Do I have to withhold tax on overseas SaaS and cloud subscriptions?
Generally no. IRAS says that where a non-resident provides services by electronic means from overseas — internet, email, telephone — without sending staff to Singapore, the services are rendered outside Singapore and withholding tax is not applicable. That covers most software subscriptions and remote service providers. Licensing intellectual property is different: royalties for the use of movable property are withheld at 10%.
My developer works from another country. Do I withhold?
If all the work is done outside Singapore, no — and there is nothing to file. If they fly in to work on site, the fees attributable to the work done in Singapore come into charge, and you apportion. Where the contractor is an individual or unincorporated firm, the rate is 15% of gross, or 24% of net if they elect to be taxed on net income.
When is withholding tax actually due?
By the 15th of the second month from the date of payment to the non-resident. The date of payment is the earliest of: when the payment is due and payable under the contract, or the invoice date where there is no contract, with credit terms ignored; when it is credited to the non-resident's account; and the date of actual payment. So a March invoice on 30-day terms is due in May, whatever date the money leaves your account.
The vendor is in a treaty country. Do I still need to file?
Yes. IRAS requires the withholding tax filing even where the payment is exempt under a Double Taxation Agreement or the Approved Royalties Incentive. Tick the relief box when filing and obtain the original Certificate of Residence from the vendor for each year you claim it. Declaring the wrong relief can attract late payment penalties.
I already paid the vendor in full and withheld nothing. What now?
The tax is still due, and IRAS looks to you as the payer, not to the vendor. If you end up bearing the tax rather than recovering it, it is computed on a re-grossed basis, so the cost is higher than the headline rate. Late payment attracts a 5% penalty, then a further 1% for each completed month beyond 30 days past the due date, capped at 15%. File and pay as soon as you find it.
Does withholding tax apply to a loan from my overseas parent company?
Interest, commissions and fees in connection with any loan or indebtedness paid to a non-resident are subject to 15% withholding tax. Shareholder and intercompany funding is the single most commonly missed trigger in owner-managed groups, because nobody thinks of servicing a loan as paying a vendor.
Is the rate on non-resident directors' fees still 22%?
No. It is 24%. The 22% rate applied to income due and payable from 1 January 2016 to 31 December 2022 only. For fees approved in arrears, the date of payment is the date the fees are voted and approved at the AGM — which is what starts the two-month clock.
Official sources
Rates, the date-of-payment definition, penalties, filing rules and the scope of the withdrawn concessions are as published by IRAS, checked on 7 September 2026.
- IRAS: Overview of Withholding Tax (WHT)
- IRAS: Types of payment and the applicable withholding tax rates
- IRAS: Payments that are subject to withholding tax
- IRAS: Withholding tax filing and payment due date
- IRAS: Late payment or non-payment of withholding tax
- IRAS: How to file withholding tax
- IRAS: Tax obligations for non-resident professional
- IRAS: Tax obligations for non-resident directors
This guide provides general information, not tax advice. Whether a particular payment is subject to withholding tax depends on the contract, the nature of the payment, where the work was performed, the vendor’s tax residence and any applicable treaty — and on IRAS’s current guidance, which changes from time to time.
WRITTEN BY
Jacqueline May
Principal Accountant · Chartered Accountant (Singapore), ISCA member
Jacqueline is a Chartered Accountant (Singapore) and ISCA member, and the Principal Accountant at Synergy Accounting, a Singapore practice established in 2013. She works on corporate tax, GST and ACRA compliance for small and medium businesses — the filings, deadlines and judgement calls most owners would rather hand over. These guides are written from what she sees in practice.