Tax estimates, itemised line by line.

45 free calculators for the UK, Ireland, the UAE, Pakistan, Saudi Arabia, the USA, Canada and Australia. Enter your figures, read the workings, and save scenarios in your own browser.

No account, no upload. Rates last reviewed September 2026. Results are estimates, not tax advice.

Sample calculation using the same engine as the calculators. England, 2026/27 tax year.

What every result shows

The workings, not just a total

Each result lists every band, allowance and deduction that was applied, ending in a total with the effective rate.

Assumptions on the page

Open “Rates and assumptions used” on any tool to see the rates, thresholds and what is left out.

Private by design

Calculations happen in your browser. Saved scenarios stay on your device, and you can delete them at any time.

Before you rely on a number

A calculator is a starting point. These checks catch most surprises.

  • Confirm the tax year. Every page states the year its rates come from.
  • Check the assumptions and exclusions for the tool you used. Reliefs, treaties and special regimes are often left out.
  • Compare against the official rates published by your tax authority.
  • Keep records of the inputs you used. The “Inputs used” list in each result can be printed or saved as a PDF.
  • For filing, penalties or larger decisions, speak to a qualified tax adviser in the relevant country.

Official sources

Always confirm current rates with the authority that collects the tax.

CountryTax authorityPeriod covered
United KingdomHM Revenue & Customs (HMRC)Tax year 6 April 2026 to 5 April 2027
IrelandRevenue CommissionersTax year 1 January to 31 December 2026
United Arab EmiratesFederal Tax Authority (FTA)Calendar year 2026
PakistanFederal Board of Revenue (FBR)Tax year 2027 (1 July 2026 to 30 June 2027)
Saudi ArabiaZakat, Tax and Customs Authority (ZATCA)Calendar year 2026
United StatesInternal Revenue Service (IRS)Federal tax year 2026
CanadaCanada Revenue Agency (CRA)Calendar year 2026
AustraliaAustralian Taxation Office (ATO)Financial year 1 July 2026 to 30 June 2027

Estimates only. These calculators give general estimates based on simplified rules. They are not tax, legal or accounting advice and do not replace your tax authority or a qualified adviser. Read the full disclaimer before relying on a result.