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Head-to-head · Tax Calculators

SmartAsset Paycheck Calculator vs HMRC Income Tax Estimate

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score SmartAsset Paycheck Calculator #2 in Tax Calculators 8.8/10 Free plan Free plan Visit SmartAsset
HMRC Income Tax Estimate #6 in Tax Calculators 8.4/10 Free plan Free plan Visit HMRC

SmartAsset Paycheck Calculator leads on 0 checks, HMRC Income Tax Estimate 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 scoreSmartAsset Paycheck Calculator · 8.8/10
  • Free planboth

SmartAsset Paycheck Calculator scores higher on our rubric for tax calculators: 8.8 against 8.4 out of 10; our editors rank them #2 and #6.

SmartAsset Paycheck Calculator is the better fit for U.S. employees estimating net pay. HMRC Income Tax Estimate is the better fit for UK employees estimating tax and take-home pay.

  • SmartAsset Paycheck Calculator fits best

    U.S. employees estimating net pay

  • HMRC Income Tax Estimate fits best

    UK employees estimating tax and take-home pay

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature SmartAsset Paycheck Calculator 8.8/10 Visit ↗ HMRC Income Tax Estimate 8.4/10 Visit ↗
At a glance
Editor score 8.8 8.4
Ranking #2 in Tax Calculators #6 in Tax Calculators
Best for U.S. employees estimating net pay UK employees estimating tax and take-home pay
Pricing model Free Free
Starting price Not published Not published
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud, Mobile
Platforms Web Web, iOS, Android
Built for Solo Solo
Specs
Calculator types Paycheck take-home pay estimates for hourly and salaried income Income Tax and National Insurance estimate; take-home pay estimate
Tax jurisdictions Multiple Multiple
Income sources Hourly wages, salary, overtime Employment income; does not estimate when state benefits are the only income
Filing statuses Single, married Not published
Tax years Not published 2026–2027
Platforms Web web; iOS; Android
Our review
Pros
  • Estimates withholding across federal, state and local taxes
  • Includes overtime and pre- and post-tax deductions
  • Breaks estimates down into taxes, deductions and take-home pay
  • Estimates Income Tax, National Insurance and take-home pay
  • Includes pension contributions and student loan repayments
  • Available on web, iOS and Android
Cons
  • Limited to paycheck estimates for hourly or salaried income
  • Filing status inputs cover single and married
  • Does not offer broader tax-planning scenarios
  • Designed for employment income rather than all income types
  • State benefits as the only income are not supported
  • Multiple jobs require a separate estimate for each job
Our verdict

SmartAsset Paycheck Calculator is a free web tool for employees estimating net pay from hourly wages or a salary. Users enter location and pay frequency, along with marital status and dependents, to see an estimated paycheck after…

Read the review →

HMRC Income Tax Estimate is a free calculator for employees who pay tax through an employer. It estimates Income Tax and National Insurance for the current UK tax year, then shows estimated take-home pay. Employees can include pension…

Read the review →
  1. SmartAsset Paycheck CalculatorTax Calculators 8.8Free plan
  2. HMRC Income Tax EstimateTax Calculators 8.4Free plan

Strengths and trade-offs

  • SmartAsset Paycheck Calculator — where it wins

    • Estimates withholding across federal, state and local taxes
    • Includes overtime and pre- and post-tax deductions
    • Breaks estimates down into taxes, deductions and take-home pay

    Where it doesn't

    • Limited to paycheck estimates for hourly or salaried income
    • Filing status inputs cover single and married
    • Does not offer broader tax-planning scenarios

  • HMRC Income Tax Estimate — where it wins

    • Estimates Income Tax, National Insurance and take-home pay
    • Includes pension contributions and student loan repayments
    • Available on web, iOS and Android

    Where it doesn't

    • Designed for employment income rather than all income types
    • State benefits as the only income are not supported
    • Multiple jobs require a separate estimate for each job

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