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 23.37% 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
6.4 points below the 23.37% global average
Why Reverse Tax Calculation Matters
Receipts and invoices usually show only the tax-included total — not the pre-tax price. Reversing the calculation matters for bookkeeping, expense claims, and cross-border price comparisons. Because dividing by (1 + rate) isn't the same as simply subtracting the rate, doing this by hand is a common source of errors — select "Reverse" in the purchase-mode calculator above to handle 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
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
Rates last verified for 2026. Tax rates change through national budgets — always confirm current figures with a qualified local tax advisor before making business or relocation decisions. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorLead Content Editor & Personal Finance Specialist
Jordan Hayes is a personal finance content strategist with 9+ years building educational finance and health resources. He has written and fact-checked over 200 personal finance guides covering mortgage amortization, retirement planning, tax strategy, and budgeting. His work applies IRS publications, Federal Reserve data, and peer-reviewed research to make complex calculations accessible.