Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience real numbers from our own analytics — open to see them
–Visitors
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · counted by iTechGuides's own first-party analytics, bots removed, every figure rounded down · how we count

Head-to-head · Tax Calculators

GOV.UK Self Assessment Tax Calculator vs India Income Tax Calculator

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score GOV.UK Self Assessment Tax Calculator #5 in Tax Calculators 8.5/10 Free plan Free plan Visit GOV.UK
India Income Tax Calculator #8 in Tax Calculators 8.2/10 Free plan Free plan Visit Calculator

GOV.UK Self Assessment Tax Calculator leads on 0 checks, India Income Tax Calculator on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGOV.UK Self Assessment Tax Calculator · 8.5/10
  • Free planboth

GOV.UK Self Assessment Tax Calculator scores higher on our rubric for tax calculators: 8.5 against 8.2 out of 10; our editors rank them #5 and #8.

GOV.UK Self Assessment Tax Calculator is the better fit for UK self-employed people with mixed income. India Income Tax Calculator is the better fit for indian taxpayers estimating annual tax liability.

  • GOV.UK Self Assessment Tax Calculator fits best

    UK self-employed people with mixed income

  • India Income Tax Calculator fits best

    Indian taxpayers estimating annual tax liability

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.

Side by side

Feature GOV.UK Self Assessment Tax Calculator 8.5/10 Visit ↗ India Income Tax Calculator 8.2/10 Visit ↗
At a glance
Editor score 8.5 8.2
Ranking #5 in Tax Calculators #8 in Tax Calculators
Best for UK self-employed people with mixed income Indian taxpayers estimating annual tax liability
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Built for Solo Solo, Small business, Mid-market, Enterprise
Specs
Calculator types Income Tax; Class 4 National Insurance Income tax liability
Tax jurisdictions Federal Federal
Income sources self-employment profits; property rental income; State or occupational pension; paid employment Not checked yet
Filing statuses Not checked yet Not checked yet
Tax years 2025 to 2026 2026–27
Platforms web web
Our review
Pros
  • Estimates Income Tax for the 2025 to 2026 tax year
  • Includes Class 4 National Insurance for self-employed users
  • Combines self-employment, rental, pension, and employment income
  • Estimates tax using taxpayer category and net taxable income
  • Breaks out income tax, surcharge, and health and education cess
  • Supports assessment year 2026–27 calculations
Cons
  • Assumes the standard Personal Allowance
  • Does not account for savings and investment income
  • Excludes the High Income Child Benefit Charge and amounts already paid
  • Focused on income-tax liability rather than broader income estimates
  • Does not cover other tax jurisdictions
  • Available as a web tool rather than a listed desktop or mobile app
Our verdict

GOV.UK’s Self Assessment Tax Calculator is a free web tool from HM Revenue & Customs for estimating Income Tax for the 2025 to 2026 tax year. For self-employed users, it also estimates Class 4 National Insurance. It is aimed at people who…

Read the review →

India Income Tax Calculator is a free online tool from the Income Tax Department, Ministry of Finance, Government of India. It is intended for Indian taxpayers who want an estimate based on their taxpayer category and net taxable income.…

Read the review →
  1. GOV.UK Self Assessment Tax CalculatorTax Calculators 8.5Free plan
  2. India Income Tax CalculatorTax Calculators 8.2Free plan

Strengths and trade-offs

  • GOV.UK Self Assessment Tax Calculator — where it wins

    • Estimates Income Tax for the 2025 to 2026 tax year
    • Includes Class 4 National Insurance for self-employed users
    • Combines self-employment, rental, pension, and employment income

    Where it doesn't

    • Assumes the standard Personal Allowance
    • Does not account for savings and investment income
    • Excludes the High Income Child Benefit Charge and amounts already paid

  • India Income Tax Calculator — where it wins

    • Estimates tax using taxpayer category and net taxable income
    • Breaks out income tax, surcharge, and health and education cess
    • Supports assessment year 2026–27 calculations

    Where it doesn't

    • Focused on income-tax liability rather than broader income estimates
    • Does not cover other tax jurisdictions
    • Available as a web tool rather than a listed desktop or mobile app
  • GOV.UK Self Assessment Tax Calculator8.5/10 · Free plan

    A free web calculator for estimating 2025–26 tax across several income sources.

    Visit GOV.UKFull verdict →
  • India Income Tax Calculator8.2/10 · Free plan

    A free web calculator for estimating Indian income tax and total liability.

    Visit CalculatorFull verdict →

More comparisons

All tax calculators comparisons → · Full ranking →

Guides on tax calculators

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update