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Singapore GST Calculator

Singapore's GST (Goods and Services Tax) is administered by the Inland Revenue Authority of Singapore (IRAS) and is currently 9%, after the 2024 increase from 8%. GST-registered businesses charge 9% on standard-rated supplies and claim input credits on purchases.

✓ Exact, integer-based math ✓ Works offline after load ✓ SGD (Singapore dollars)
Singapore
S$
GST rate
Base amount –
GST amount (9%) –
Total (GST-incl.) –

How to use this Singapore GST calculator

  1. 1

    Choose "Add tax" (base price → GST-inclusive) or "Remove tax" (inclusive → net).

  2. 2

    Enter the amount in SGD.

  3. 3

    The 9% rate is pre-selected — results update as you type.

Singapore GST formula

GST = Price × 9% · Gross = Price × 1.09

Extracting GST from an inclusive price: Net = Gross ÷ 1.09 and GST = Gross − Net. GST = Gross × 9/109 at the current rate.

Singapore GST rates

Standard — 9% Most goods and services (default, since 1 Jan 2024)
Zero-rated — 0% Exports and international services
Exempt Financial services, sale/lease of residential property

Singapore GST FAQ

What is the GST rate in Singapore now?

9% — it rose in two steps, 7% → 8% in 2023 and 8% → 9% in 2024. Older receipts may show 8% or 7%; the custom field covers any of them.

How do I extract GST from an inclusive amount?

Net = Gross ÷ 1.09 and GST = Gross × 9/109 at the standard rate. Switch to "Remove tax", enter the inclusive price, and both values appear instantly.

When must a Singapore business register for GST?

Compulsory registration applies once your taxable turnover exceeds S$1 million over 12 months (or is expected to exceed it in the next 12 months). Voluntary registration is possible below that.

Is GST charged on imported digital services in Singapore?

Yes — overseas vendors must register under the Overseas Vendor Registration regime for B2C supplies of digital services and low-value goods to Singapore consumers.

How much GST on S$1,000?

Adding 9%: GST = S$90.00, total S$1,090.00. From an inclusive S$1,000: GST = 1,000 × 9 ÷ 109 = S$82.57 and net = S$917.43. Toggle the two modes above to switch directions.

What is the 9/109 fraction for GST in Singapore?

At 9%, the GST embedded in any GST-inclusive amount equals 9/109 of it. Example: from a S$1,090 invoice, GST = 1,090 × 9 ÷ 109 = S$90.00. IRAS material uses this fraction as the standard mental check.

What was the GST rate in Singapore before 2024?

8% during 2023 (after the 7% → 8% step on 1 January 2023) and 7% before that, from 2007. Receipts, invoices and contracts priced under earlier rates still settle at those rates — use the custom rate field here for any of them.

Do tourists get a GST refund in Singapore?

Yes — the eTRS (Electronic Tourist Refund Scheme) lets eligible tourists claim back the 9% GST on goods purchased from participating retailers above the minimum spend and carried out of Singapore within the qualifying window — refund points at Changi and departure sea/land checkpoints.

Is GST the same as income tax?

No — GST is an indirect consumption tax charged on supplies of goods and services and remitted to IRAS by registered businesses; income tax is charged on personal and corporate income. A business can owe GST on sales while paying no income tax, and vice versa.

What is zero-rated for GST in Singapore?

Exports of goods and qualifying international services are zero-rated (0% GST with input credits), while most financial services and the sale or lease of residential property are exempt. Standard-rated supplies at 9% cover everything else.

About this Singapore GST calculator

Singapore raised its GST to 9% in 2024 (from 8% in 2023 and 7% before), so receipts and quotes from different years can carry three different rates — this Singapore GST calculator handles the current 9% rate on its chips and accepts any custom rate for older documents. Adding GST multiplies by 1.09; extracting it divides by 1.09, which equals taking 9/109 of the gross.

GST-registered businesses use it to price standard-rated supplies, verify IRAS return figures, and check invoices from overseas vendors registered under the Overseas Vendor Registration regime. The tool is free, needs no signup, computes in exact cents with no float errors, and runs completely inside your browser.