United Kingdom Tax Calculator (2026) — Add or Reverse Tax
United Kingdom charges a 20% VAT, a 25% corporate tax rate, and a 45% top personal income tax rate.
How to use this calculator:
- Purchase mode — add VAT 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 United Kingdom's Tax System
United Kingdom levies VAT at a standard rate of 20%. Its statutory corporate income tax rate is 25%, above the 23.37% global average. The top personal income tax rate is 45%.
Region
Europe
VAT rate
20%
vs. world average corporate rate
+1.6 points above 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
UK corporation tax stood at 52% under Margaret Thatcher in 1980, reduced through the 1980s-1990s, and reached a modern low of 19% by 2017. The rate rose back to 25% effective April 2023 — the first increase in the main corporation tax rate since 1974 — after a brief 2022 political reversal in which the increase was cancelled and then reinstated within weeks under a different Chancellor.
The 2023 rate increase, alongside a new 19% small-profits rate for smaller companies, reflects a post-pandemic shift toward raising business tax revenue after the historic low of the 2017-2023 period, funding public spending pressures that built up during and after COVID-19.
Business Use Case
A small UK company with modest profits pays the 19% small-profits rate, while a larger company pays the full 25% main rate — with marginal relief smoothing the transition for companies in between, a two-tier structure reintroduced specifically alongside the 2023 rate rise.
Real-World Examples
VAT on a purchase
A £1,000.00 purchase in United Kingdom at 20%:
- Tax: £1,000.00 × 20% = £200.00
- Total: £1,200.00
Corporate tax on profit
£1,000.00 in company profit in United Kingdom at 25%:
- Tax: £1,000.00 × 25% = £250.00
- After-tax profit: £750.00
Frequently Asked Questions — United Kingdom Taxes
What is the VAT rate in United Kingdom?▾
What is the corporate tax rate in United Kingdom?▾
What is the top personal income tax rate in United Kingdom?▾
How is tax calculated on a purchase in United Kingdom?▾
How do I reverse United Kingdom's VAT 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.