GST 9%, Withholding Tax and Director Fee WHT Singapore 2026
Three IRAS tax tools that every business owner, freelancer, and company secretary uses on a daily or quarterly basis. The GST 9% Calculator adds or removes GST from any invoice amount — the single most frequently used financial calculation in Singapore business. The Withholding Tax Calculator computes the tax you must deduct when paying non-resident vendors for services, royalties, interest, or technical fees — with rates ranging from 10% to 24% depending on the income type and applicable tax treaties. And the Director Fee WHT Calculator determines the flat 24% withholding tax on fees paid to non-resident company directors. These three tools handle the tax obligations that Singapore businesses encounter with every invoice, vendor payment, and board resolution.
Understanding the GST 9% Calculator in Singapore 2026 — How to Add GST to Prices, Remove GST From GST-Inclusive Amounts and Calculate the Tax Component on Any Invoice Using IRAS-Compliant Arithmetic
The Goods and Services Tax in Singapore is currently 9%, effective from 1 January 2024. Every GST-registered business must charge 9% on taxable supplies and account for the tax in quarterly GST returns (Form GST F5) filed with IRAS. The two most common GST calculations are:
Adding GST to a price: Multiply the GST-exclusive amount by 1.09. A product priced at S$100 before GST becomes S$109 inclusive of GST. The GST component is S$9 (9% of S$100). This is used when quoting prices to customers, issuing tax invoices, and preparing quotations.
Removing GST from a GST-inclusive price: Divide the GST-inclusive amount by 1.09. A receipt showing S$109 means the GST-exclusive price is S$100 (S$109 ÷ 1.09) and the GST portion is S$9 (S$109 – S$100). This is used when extracting the GST component from a total bill, filing input tax claims, and reconciling accounts.
A common mistake: multiplying the GST-inclusive amount by 9% to extract GST. This produces the wrong answer. S$109 × 9% = S$9.81 (incorrect). The correct method is S$109 ÷ 1.09 = S$100, then S$109 – S$100 = S$9 (correct). The difference matters when filing quarterly returns — getting this wrong across thousands of transactions creates cumulative errors that trigger IRAS audits.
The GST 9% Calculator takes any amount and the direction (add GST or remove GST). It shows: the GST-exclusive amount, the GST component, the GST-inclusive amount, and the formula used. It handles bulk calculations for multiple line items and produces a summary suitable for inclusion in a tax invoice or GST return.
GST on Imports and the Reverse Charge Mechanism — When You Pay GST Without Receiving a Tax Invoice
From 1 January 2023, the Overseas Vendor Registration (OVR) regime requires non-resident sellers of digital services to charge 9% GST on sales to Singapore consumers. Additionally, GST-registered businesses importing services must self-account for GST under the reverse charge mechanism — meaning you calculate and pay the GST yourself, without the vendor charging it. This applies to fees paid to overseas consultants, cloud services, overseas marketing agencies, and similar B2B service imports. The GST Calculator includes a reverse charge mode for these scenarios.
Understanding Withholding Tax (WHT) in Singapore 2026 — How to Deduct and Remit Tax When Paying Non-Resident Vendors for Services, Royalties, Interest and Technical Fees Under IRAS Section 45 Rules
Withholding tax is the tax that a Singapore company must deduct from payments made to non-resident individuals or companies for specific types of income. Instead of the non-resident filing a Singapore tax return, the Singapore payer withholds a percentage of the payment and remits it directly to IRAS. The payer is legally responsible for the withholding — failure to withhold results in the Singapore company being liable for the tax.
The standard WHT rates for payments to non-residents (without treaty benefits) in 2026 are: royalties at 10%, interest at 15%, technical service fees and management fees at the prevailing non-resident rate (currently 24% for companies, or 15% flat/progressive for individuals), rent for movable property at 15%, and payments to non-resident professionals (consultants, speakers, coaches) at 15% of gross fees (or 24% of net income).
Many of these rates are reduced under Singapore bilateral tax treaties (also called Double Tax Agreements or DTAs). Singapore has over 90 DTAs in force. For example, the Singapore-US treaty reduces the royalty WHT rate from 10% to 5%, and the interest rate from 15% to various lower rates depending on the recipient. The Singapore-UK, Singapore-India, and Singapore-China treaties each have different reduced rates. Always check the applicable DTA before applying WHT.
The withholding must be remitted to IRAS by the 15th of the second month following the date of payment. For example, if you pay a US vendor on 10 March 2026, the WHT must be remitted by 15 May 2026. Late remittance incurs a 5% penalty. Filing is done via the IRAS e-Stamping portal using Form IR37 (for individuals) or Section 45 notification.
The WHT Calculator takes the payment type (royalty, interest, service fee, rent), the vendor country, the gross payment amount, and whether a DTA applies. It shows: the applicable WHT rate (standard or treaty-reduced), the WHT amount, the net payment to the vendor, the IRAS remittance deadline, and the form to file.
Understanding Director Fee Withholding Tax in Singapore 2026 — The Flat 24% Tax on Fees Paid to Non-Resident Company Directors and How to File Form IR21 With IRAS
When a Singapore company pays director fees to a non-resident director (a director who is not a Singapore tax resident), the company must withhold tax at a flat rate of 24% — the top marginal personal income tax rate. This applies regardless of the amount. There is no minimum threshold: even S$1,000 in director fees triggers the 24% withholding obligation.
A director is non-resident if they do not meet the 183-day physical presence test in Singapore for that calendar year. Many Singapore companies have overseas directors who attend board meetings remotely or visit Singapore briefly — these directors are typically non-residents and their fees are subject to 24% WHT.
The 24% rate is deliberately set at the top marginal rate because non-resident directors cannot claim personal reliefs. Unlike other non-resident income (which may be taxed at 15% or treaty-reduced rates), director fees have no treaty relief in most DTAs — the Director Article in most treaties allows the source country (Singapore) to tax director fees at its domestic rate. This makes director fee WHT one of the highest effective tax rates applied to non-resident income.
The company must file a tax clearance notification with IRAS when a non-resident director fee is paid. If the director also receives employment income from the company, Form IR21 (tax clearance) must be filed at least one month before the director ceases their role or leaves Singapore. The Director Fee WHT Calculator takes the gross director fee and residency status. It shows: the 24% WHT amount, the net fee payable to the director, the IRAS filing requirement, and the remittance deadline.
How These 3 IRAS Tax Calculators Work — GST Add/Remove Arithmetic, WHT Rate Lookup and Director Fee Withholding for Singapore 2026
The GST 9% Calculator takes a dollar amount and direction (add or remove GST). For adding: amount × 1.09. For removing: amount ÷ 1.09. It shows GST-exclusive amount, GST component (rounded to 2 decimal places), and GST-inclusive total. It also handles reverse charge for imported services.
The WHT Calculator takes payment type, vendor country, gross amount, and DTA availability. It applies the correct rate (standard or treaty-reduced), computes WHT amount, net payment to vendor, remittance deadline (15th of second month after payment), and identifies the IRAS form required.
The Director Fee WHT Calculator takes the gross director fee and applies the flat 24% rate. It shows: WHT amount, net fee to director, whether Form IR21 is required, and the remittance deadline. It also flags cases where the director might qualify as a resident (183+ days) and therefore should not be subject to WHT.
3 Real Singapore Business Tax Examples — GST Invoice Calculation, WHT on US Software Royalties and Non-Resident Director Fee Withholding
Example 1: Adding 9% GST to a S$15,000 Consulting Invoice
ABC Consulting Pte Ltd (GST-registered) bills a client S$15,000 for management consulting services. The invoice must show GST separately.
The tax invoice must show: the GST registration number, the GST-exclusive amount (S$15,000), the GST amount (S$1,350), and the GST-inclusive total (S$16,350) as separate line items. The S$1,350 collected is output tax that ABC Consulting reports in their quarterly GST F5 return and remits to IRAS. Use the GST Calculator for quick conversions on any amount.
Example 2: WHT on S$50,000 Software Royalty Payment to a US Company
DataTech SG Pte Ltd pays US$37,000 (approximately S$50,000) in software royalties to a US-based licensor. Singapore has a DTA with the US that reduces royalty WHT from 10% to 5%.
The Singapore-US DTA halves the royalty WHT from 10% to 5%, saving S$2,500. Without applying the treaty, DataTech would withhold S$5,000 — and the US company would need to claim a refund from IRAS. Always check the applicable DTA before withholding. To apply the treaty rate, DataTech must obtain a Certificate of Residence from the US company and submit to IRAS. Use the WHT Calculator to check treaty rates for any country.
Example 3: Director Fee WHT — S$30,000 Paid to a Non-Resident UK Director
GlobalTech SG Pte Ltd pays S$30,000 in annual director fees to Mr Smith, a UK-based non-executive director who attended 4 board meetings remotely and visited Singapore for 12 days in 2025.
Mr Smith receives only S$22,800 after the 24% WHT. The S$7,200 is remitted to IRAS by GlobalTech. Unlike royalties and interest, director fees rarely benefit from DTA reductions — the Singapore-UK treaty allows Singapore to tax director fees at the domestic rate. If Mr Smith spent 183+ days in Singapore, he would be a tax resident and pay progressive rates (potentially lower than 24%). Use the Director Fee Calculator to compute the withholding and the 183-Day Countdown to check residency.
3 Expert Tips for GST, WHT and Director Fee Tax in Singapore
Never Multiply GST-Inclusive Amounts by 9% — Always Divide by 1.09 to Extract the Tax Component
The most common GST arithmetic error in Singapore: taking a S$109 receipt and calculating S$109 × 9% = S$9.81 as the GST. The correct answer is S$9.00 (S$109 ÷ 1.09 = S$100, then S$109 – S$100 = S$9). The S$0.81 error per S$109 transaction may seem small, but across 10,000 transactions per quarter, it creates a S$8,100 discrepancy in your GST return — enough to trigger an IRAS audit. Train your accounts team to use the divide-by-1.09 method exclusively.
Always Check the DTA Before Withholding — Applying the Wrong Rate Costs You or Your Vendor Money
Singapore has over 90 Double Tax Agreements. Treaty rates can reduce WHT by 50% or more (e.g., US royalties from 10% to 5%, China technical fees from 24% to 10%). If you withhold at the standard rate when a treaty rate applies, your vendor receives less and must apply to IRAS for a refund — a process that takes 3-6 months. Conversely, if you apply a treaty rate without obtaining the vendor Certificate of Residence, IRAS may assess the shortfall plus penalties against you. Always get the COR first, then apply the treaty rate.
Consider Converting Non-Resident Directors to Residents — 183 Days Saves 5-15% in Tax
A non-resident director paying 24% WHT on S$100,000 in fees loses S$24,000 to tax. If the same director becomes a tax resident (183+ days in Singapore), they pay progressive rates: approximately S$5,650 on S$100,000 chargeable income (after the S$1,000 Earned Income Relief). The savings: S$18,350 per year. For directors who travel to Singapore regularly, arranging sufficient days to cross the 183-day threshold can be a legitimate tax planning strategy. Track days with the 183-Day Countdown Tool.
16 Frequently Asked Questions About GST, WHT and Director Fee Tax in Singapore
What is the current GST rate in Singapore?
The GST rate is 9%, effective from 1 January 2024. This was raised from 8% in 2023 and 7% prior to that. The 9% rate applies to all taxable goods and services supplied by GST-registered businesses in Singapore.
How do I add GST to a price?
Multiply the GST-exclusive price by 1.09. For example, S$100 × 1.09 = S$109 (GST-inclusive). The GST component is S$9. This is the correct method for computing GST on any amount.
How do I remove GST from a GST-inclusive price?
Divide the GST-inclusive amount by 1.09 to get the GST-exclusive price. Then subtract to get the GST component. For example: S$109 ÷ 1.09 = S$100 (exclusive). GST = S$109 – S$100 = S$9. Never multiply the inclusive amount by 9% as this produces an incorrect result.
What is withholding tax in Singapore?
Withholding tax is a tax that a Singapore payer must deduct from payments made to non-resident recipients for specific income types (royalties, interest, technical fees, management fees, rent for movable property, and professional fees). The withheld amount is remitted directly to IRAS on behalf of the non-resident.
What are the standard WHT rates in Singapore?
Standard rates without treaty benefits: royalties 10%, interest 15%, technical and management fees 17-24% depending on recipient type, rent for movable property 15%, and non-resident professional fees 15% of gross or 24% of net income. These rates may be reduced under applicable Double Tax Agreements.
How do Double Tax Agreements affect WHT?
Singapore has over 90 DTAs that can reduce WHT rates on royalties, interest, and technical fees. For example, the Singapore-US treaty reduces royalty WHT from 10% to 5%. To apply the treaty rate, the non-resident must provide a Certificate of Residence from their home country tax authority.
When must WHT be remitted to IRAS?
WHT must be remitted to IRAS by the 15th of the second month following the date of payment. For example, a payment made on 10 March requires WHT remittance by 15 May. Late remittance incurs a 5% penalty on the outstanding amount.
What is the WHT rate on non-resident director fees?
Director fees paid to non-resident directors are subject to WHT at a flat 24%, which is the top marginal personal income tax rate. This rate applies regardless of the fee amount and is generally not reduced by tax treaties, as most DTAs allow the source country to tax director fees at domestic rates.
Can a non-resident director avoid the 24% WHT?
The only way to avoid the 24% WHT is to become a Singapore tax resident by being physically present in Singapore for 183 days or more in the calendar year. As a resident, the director pays progressive rates (0-24%) with personal reliefs, which typically results in a lower effective rate than 24% flat.
What is the reverse charge mechanism for GST?
The reverse charge mechanism requires GST-registered businesses to self-account for GST on imported services from overseas suppliers. Instead of the overseas supplier charging GST, the Singapore business calculates and pays the 9% GST to IRAS itself. This applies to B2B service imports such as overseas consulting, cloud services, and marketing fees.
Do I need to charge GST on exports?
Exports of goods are zero-rated at 0% GST. You do not charge GST on exports but you can still claim input tax credits on your local purchases. This makes GST registration advantageous for export-oriented businesses since they collect no GST but reclaim GST on inputs.
What is a tax invoice and what must it contain?
A tax invoice is issued by a GST-registered supplier and must contain: the supplier name, address, and GST registration number, the invoice date and number, the customer name and address, a description of goods or services, the GST-exclusive amount, the GST amount, and the GST-inclusive total. Tax invoices must be issued within 30 days of supply.
Is WHT applicable to payments to Singapore residents?
No. WHT only applies to payments made to non-residents. Payments to Singapore tax residents for the same types of income (royalties, interest, fees) are not subject to WHT. The resident reports the income in their own tax return and pays tax through the normal assessment process.
What is Form IR37 used for?
Form IR37 is used by the Singapore payer to notify IRAS of WHT deducted from payments to non-resident individuals (not companies). It reports the payment details, the WHT amount, and the recipient information. For payments to non-resident companies, the Section 45 filing applies instead.
Can I claim back over-withheld WHT?
If you withheld tax at a higher rate than the applicable treaty rate, the non-resident can apply to IRAS for a refund of the excess. The application requires the Certificate of Residence and proof of the payment. Refunds typically take 3-6 months to process. It is better to apply the correct treaty rate upfront.
Are there any exemptions from GST in Singapore?
Certain supplies are exempt from GST: financial services (loans, insurance premiums, currency exchange), sale and lease of residential property, and the import and supply of investment precious metals. Exempt supplies are different from zero-rated supplies — exempt suppliers cannot claim input tax credits on related purchases.
Related Business Tax and Invoice Calculators for Singapore
Legal Disclaimer and Editorial Transparency
GST rate of 9% effective 1 January 2024 per IRAS and the Goods and Services Tax Act. Withholding tax rates per Section 45 of the Income Tax Act and IRAS e-Tax Guides on WHT. Director fee WHT at 24% per IRAS non-resident tax guidelines. Double Tax Agreement rates per the specific bilateral treaties published by IRAS. Reverse charge mechanism per IRAS GST e-Tax Guide on imported services. WHT remittance deadlines and penalties per IRAS regulations. Certificate of Residence requirements per IRAS international tax guidelines. Tax calculations are estimates and may vary based on specific treaty provisions, IRAS rulings, and individual circumstances. This guide is for informational and educational purposes only. It does not constitute tax, legal, or accounting advice. Consult IRAS or a qualified tax professional for your specific situation. Published by MAFHH INTERNATIONAL LTD. Editorially independent. We do not collect any data you enter into our calculators.
