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Formulas and assumptions

How MoneyBasis calculates results

Explore the formulas, assumptions and sources behind each estimate. Your inputs provide the starting point; the calculation runs in your browser.

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Salary ↔ Hourly Calculator

What it estimates

This calculator converts annual and hourly compensation and estimates federal income tax and FICA using the stated tax year. Tax estimates include the components explicitly shown in the calculator. State and local taxes are not included.

How it calculates

Estimated take-home pay = Gross pay − Entered deductions − Federal income tax − Social Security − Medicare

Annualized estimate for one worker using the selected tax year, federal income tax, employee FICA and qualifying pretax deductions. It does not recreate W-4 withholding.

Inputs

Annual salary · Hourly wage · Hours per week · Filing status

Included / not modeled

Included

  • Salary and hourly conversions
  • Selected-year federal income tax
  • Employee Social Security and Medicare
  • Entered qualifying pretax deductions

Not modeled

  • State and local taxes
  • Tax credits and itemized deductions
  • Spouse income
  • Paycheck withholding
Assumptions & limitations
  • The selected tax year defaults to 2026; 2025 is also supported. Sources accompany the selected year.
  • Only the federal standard deduction is applied — no credits or itemized deductions.
  • State/local taxes, credits and spouse income are excluded. MFJ assumes one worker.
  • Social Security tax applies only up to the 2026 wage base of $184,500.
  • Medicare is 1.45% plus 0.9% above $200,000 of Medicare wages for single/head-of-household or $250,000 for MFJ.

Sources

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