Free Paycheck Calculator — Where Every Dollar Goes

Last updated: April 17, 2026

MoneyMath's paycheck calculator estimates 2026 take-home pay after federal tax, FICA, state tax, and pre-tax deductions, then shows where each dollar of gross pay goes.

Free to useRuns in your browserSource-backed assumptions

Estimate take-home pay after federal tax, FICA, state tax, and common pre-tax deductions.

Model salary, pay frequency, 401(k), HSA, and health insurance changes before accepting an offer or raise.

Use the waterfall breakdown to see which deductions have the biggest effect on net pay.

How to use this calculator

Step 1Enter your starting information. Add the core inputs requested by the Paycheck Calculator, such as amounts, dates, rates, income, weight, or other scenario details.
Step 2Review the calculated result. Read the headline answer first, then scan the supporting breakdown, chart, or comparison table.
Step 3Compare another scenario. Change one input at a time to understand what drives the result and which option is most realistic.

Formula, Sources & Assumptions

Formula

Net pay = gross pay - federal income tax - FICA - state income tax - pre-tax deductions.

Assumptions

Federal brackets and standard deduction use tax year 2026 values.
FICA uses the 2026 Social Security wage base and standard Medicare thresholds.
State tax estimates are simplified and may not include all local taxes, credits, or payroll rules.

Sources

IRS 2026 tax inflation adjustmentsFederal brackets, standard deduction, and indexed tax items.
SSA 2026 Social Security changesOASDI wage base and FICA context.
IRS 2026 retirement plan limits401(k), IRA, and catch-up contribution limits.
IRS Rev. Proc. 2025-19 HSA limits2026 HSA contribution limits and HDHP thresholds.