If you run a Singapore company and pay interest, royalties, technical service fees, management fees, or director’s fees to a non-resident, you may be legally required to withhold a slice of that payment and hand it over to the Inland Revenue Authority of Singapore (IRAS) before the money leaves Singapore. That mechanism is called withholding tax. Get it wrong, and the payer — not the recipient — becomes liable for the shortfall, penalties and interest.
Withholding tax trips up small and mid-sized companies more than any other cross-border tax obligation in Singapore. The rules sit in Sections 45 to 45I of the Income Tax Act 1947, and they cover a surprisingly wide net of payments. This 2026 guide walks you through when withholding tax applies, what rates you must use, how to file the S45 return, and where directors most commonly get it wrong.
What Is Singapore Withholding Tax?
Withholding tax is a tax collected at source. When a Singapore payer makes certain types of payments to a non-resident person or company, the payer must:
- Deduct the applicable tax from the gross payment,
- Remit it to IRAS by the 15th day of the second month following payment, and
- File Form IR37 (or IR37A/B/C/D depending on payment type) online via myTax Portal.
The obligation is on the Singapore payer. If the payer fails to withhold, IRAS will still recover the tax from the payer, plus a 5% late-payment penalty and further 1% penalty for each completed month of continuing default (capped at 15%).
Who Is a Non-Resident for Withholding Tax Purposes?
A non-resident for withholding tax purposes is:
- An individual whose tax residency for the year is outside Singapore, or
- A company that is not incorporated in Singapore and whose management and control is not exercised in Singapore.
Do not confuse residency for withholding tax with residency for other tax purposes. The default position for corporate residency is that a company incorporated overseas is presumed non-resident unless proven otherwise via a Certificate of Residence. For a deeper look at how corporate residency is determined, see our guide on the Control and Management Test for Singapore Tax Residency (2026).
Payments That Attract Withholding Tax
Not every payment to a non-resident triggers withholding. The Income Tax Act specifies a closed list. The main categories under Sections 45 to 45I are:
1. Interest, Commission and Fees Connected with Loans (Section 45)
Interest paid to a non-resident lender is subject to 15% withholding tax on the gross interest. This applies whether the loan is from a related-party overseas parent or an unrelated foreign bank. Commission and management fees on any loan or indebtedness are treated the same way.
The 15% rate is the domestic rate. If Singapore has a Double Taxation Agreement (DTA) with the lender’s home country — see the IRAS list of DTAs — a reduced treaty rate may apply. Most DTAs cap interest withholding at 5% to 10%.
2. Royalties and Payments for Use of Movable Property (Section 45A)
Royalties, licence fees and payments for use of intellectual property are subject to 10% withholding tax. Payments for use of movable property (equipment rental etc.) also fall in here.
3. Technical Assistance, Service Fees and Management Fees (Section 45B)
Where services are performed in Singapore by a non-resident, the fee is subject to 17% withholding tax on the gross fee. If the services are performed entirely outside Singapore, no withholding is required.
This is a major source of confusion. “In Singapore” means the physical location where the service is rendered, not where the deliverable lands. A Malaysian IT consultant who never sets foot in Singapore but delivers a report to a Singapore client will not attract withholding tax.
4. Rent for Movable Property (Section 45C)
Rent paid to a non-resident for the use of movable property in Singapore attracts 15% withholding on the gross rental.
5. Director’s Fees (Section 45)
Director’s fees paid to a non-resident director are subject to 24% withholding tax. Note that salary paid to a non-resident director for executive services is treated separately under employment tax rules.
6. Real Estate Investment Trust (REIT) Distributions
Distributions from Singapore REITs to non-resident non-individual unitholders attract 10% withholding tax (17% for gains).
Singapore Withholding Tax Rates at a Glance (2026)
| Payment Type | Domestic Rate | Typical Treaty Rate |
|---|---|---|
| Interest to non-resident lender | 15% | 5–10% |
| Royalties | 10% | 5–10% |
| Technical / management fees (services performed in SG) | 17% | Often 0% under Business Profits article |
| Rent for movable property | 15% | Varies |
| Non-resident director’s fees | 24% | Not covered by most DTAs |
| Non-resident professional (public entertainer) | 15% on gross / 24% on net | Varies |
Common Exemptions and Non-Applicability
Withholding tax does NOT apply to:
- Dividends paid by a Singapore-resident company. Singapore operates a one-tier corporate tax system: dividends are tax-exempt in the recipient’s hands.
- Payments for goods. Only certain services and specific income streams are within the withholding regime.
- Services performed entirely outside Singapore.
- Reimbursements at cost with no mark-up, where properly documented.
- Certain interest paid to approved foreign banks where the borrower has been granted an exemption.
How to Apply a Double Taxation Agreement Rate
To apply a lower DTA rate instead of the domestic rate, three conditions must be satisfied:
- The recipient must be a tax resident of the DTA partner country.
- The recipient must be the beneficial owner of the income.
- The payer must obtain a valid Certificate of Residence (COR) from the recipient’s home tax authority, dated within the year of assessment.
The Singapore payer keeps the COR on file — it is not submitted with the S45 return, but IRAS can call for it on audit and disallow the reduced rate if it is missing.
Filing and Payment: Practical Steps
Step 1 — Determine if the Payment Is Within Scope
Run through the categories above. Confirm the recipient is a non-resident. Confirm the service was performed in Singapore (for Section 45B payments).
Step 2 — Choose the Correct Rate
Domestic rate applies by default. If a valid COR is on file and a DTA is available, apply the treaty rate.
Step 3 — Deduct at Source
The withheld amount is deducted from the gross payment. Some contracts stipulate that the payer bears the tax (gross-up clause). If so, the withholding rate is applied to the grossed-up figure, meaning the payer’s cash outflow is higher.
Step 4 — File Form IR37 on myTax Portal
File the S45 return online. The filing and payment deadline is the 15th day of the second month following the date of payment (e.g., a payment made on 3 March must be filed and paid by 15 May).
Step 5 — Pay via IRAS
Payment can be made by GIRO, PayNow QR or Internet Banking (Bill Payment). Late payment attracts a 5% penalty on the outstanding amount, plus 1% for each additional completed month (capped at 15%).
Common Mistakes That Trip Up Directors
In our practice we see the same mistakes again and again:
- Assuming the recipient will “take care of it”: The Singapore payer is the one liable to IRAS, regardless of what the contract says between the parties.
- Missing the deadline because the accounts team wasn’t looped in: Set up a monthly compliance calendar. See our Singapore Company Compliance Calendar 2026 for a template.
- Applying treaty rate without a valid COR: IRAS will disallow the reduced rate and demand the full domestic rate plus penalties.
- Confusing management fees with reimbursements: True cost reimbursements at zero mark-up, properly documented, do not attract withholding. Anything with a mark-up is a fee.
- Forgetting director’s fees to overseas directors: A 24% withholding is significant and often overlooked when directors’ fees are approved retrospectively at year-end.
Interaction With Corporate Tax and GST
Withholding tax paid is not a deductible expense for the Singapore payer. The gross fee (before withholding) is the deductible business expense, subject to the normal Section 14 tests. Related aspects:
- The withheld amount forms part of the recipient’s Singapore-source income and settles their Singapore tax liability on that income.
- Withholding tax and GST are separate regimes. See our GST Registration Singapore 2026 guide for related GST rules on imported services under the reverse charge mechanism.
- Interest paid on shareholder loans has additional transfer pricing considerations, especially for related-party financing.
Frequently Asked Questions
Q: Do I need to withhold tax on payments to my overseas parent company for shared services?
If the services are performed in Singapore (e.g., seconded staff, technical support delivered in Singapore), yes — 17% under Section 45B, subject to any applicable DTA. If services are performed entirely overseas, no withholding is required.
Q: My non-resident supplier issued an invoice in USD. What exchange rate do I use?
Use the exchange rate at the date of payment for the withholding return. IRAS accepts prevailing bank rates and the MAS reference rates.
Q: Does withholding tax apply to reimbursements of travel and accommodation?
Pure cost reimbursements at zero mark-up, supported by receipts, are usually outside the withholding net. Any mark-up converts the reimbursement into a fee, and withholding applies to the entire payment.
Q: Can I claim a refund if I over-withheld?
Yes. The recipient (or the payer, if the payer bore the cost via a gross-up) can apply to IRAS for a refund. Documentation (COR, DTA analysis, contract) is essential.
Getting Withholding Tax Right
Withholding tax compliance sits at the intersection of accounting, legal and tax operations. The payer bears the risk, the deadlines are tight, and the penalties are non-trivial. Build the withholding check into your standard payment-approval workflow: any invoice from a non-resident should trigger a screening step before payment.
Raffles Corporate Services helps clients set up withholding tax processes, secure Certificates of Residence for cross-border planning, and prepare S45 filings alongside general corporate tax compliance. If you have a cross-border transaction coming up and are unsure whether withholding applies, get it reviewed before the payment, not after.
— The Editorial Team, Raffles Corporate Services