Singapore Tax Calculator (2026) — Add or Reverse Tax
Singapore charges a 9% GST, a 17% corporate tax rate, and a 24% top personal income tax rate.
How to use this calculator:
- Purchase mode — add GST to a pre-tax price, or reverse a tax-included total to find the pre-tax price and exact tax paid.
- Profit / salary modes — enter an amount to see the corporate tax owed or a ceiling estimate of personal tax at the top marginal rate.
Understanding Singapore's Tax System
Singapore levies GST at a standard rate of 9%. Its statutory corporate income tax rate is 17%, below the 23.58% global average. The top personal income tax rate is 24%.
GST raised from 8% to 9% in January 2024.
Region
Asia
GST rate
9%
vs. world average corporate rate
6.6 points below the 23.58% global average
Why Reverse Tax Calculation Matters
Receipts and invoices usually show only the tax-included total, so separating revenue from tax collected — for bookkeeping or cross-border comparisons — means working backward from that total. Dividing by (1 + rate) isn't the same as subtracting the rate, which is why selecting "Reverse" in the purchase-mode calculator above handles it exactly.
History & Context
Singapore introduced GST at just 3% in April 1994, with an explicit five-year promise not to raise it. The rate has since climbed in stages — 4% (2003), 5% (2004), 7% (2007), 8% (2023), and 9% (2024) — with each increase historically paired with corporate and personal income tax cuts, part of a deliberate 1986-era policy shift from direct to indirect taxation.
Singapore's 1986 Economic Committee concluded that its then-40% corporate and personal top tax rates were internationally uncompetitive, recommending a shift toward consumption tax (GST) to fund the government while cutting income-based taxes — a strategic pivot credited with helping attract the foreign investment that fueled Singapore's growth.
Business Use Case
When Singapore first introduced GST in 1994, it simultaneously cut both the corporate tax rate and the top personal income tax rate by 3 percentage points each — a deliberate 'tax mix shift' from income-based to consumption-based revenue that has repeated in smaller form with subsequent GST rate increases.
Real-World Examples
GST on a purchase
A S$1,000.00 purchase in Singapore at 9%:
- Tax: S$1,000.00 × 9% = S$90.00
- Total: S$1,090.00
Corporate tax on profit
S$1,000.00 in company profit in Singapore at 17%:
- Tax: S$1,000.00 × 17% = S$170.00
- After-tax profit: S$830.00
Extracting GST from a receipt total (reverse)
A receipt shows a S$1,499.00 tax-included total in Singapore at 9%:
- Pre-tax price: S$1,499.00 ÷ (1 + 9%) = S$1,375.23
- GST: S$1,499.00 − S$1,375.23 = S$123.77
Frequently Asked Questions — Singapore Taxes
What is the GST rate in Singapore?▾
What is the corporate tax rate in Singapore?▾
What is the top personal income tax rate in Singapore?▾
How is tax calculated on a purchase in Singapore?▾
How do I reverse Singapore's GST to find the price before tax?▾
References & Sources
Methodology: headline VAT/GST and corporate rates are sourced from the OECD Corporate Income Tax Rates Database and Tax Foundation's global rate tables for 2026; figures reflect the national statutory rate and do not include sub-national, sector-specific, or temporary rate variations unless noted in the text above. Tax rates change through national budgets — always confirm current figures with a qualified local tax advisor before making business or relocation decisions.
Rates last verified for 2026. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorPersonal Finance Content Strategist
Jordan is a personal finance content strategist with 9+ years writing about mortgages, retirement, tax strategy, and budgeting. Every guide is cross-referenced with IRS publications, Federal Reserve data, and CFPB guidance to make complex calculations accessible. Editor at CalculatorApp.me.
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Tax-rate data, review & limitations
Jurisdiction: Singapore. Effective date: January 1, 2026. Reviewed by CalculatorApp.me editorial staff on July 26, 2026; next scheduled review: October 26, 2026.
Rates are reference estimates, not tax advice. Local rules, exemptions, filing status, and effective dates can change the amount due.
Primary sources
- OECD Tax Database
- Tax Foundation corporate-tax and VAT datasets
- Applicable national revenue authority guidance