Tax Calculators & Tax Guides

All US Tax Tools & Guides in One Place

Free US tax calculators and tax guides. Federal income tax, FICA (Social Security + Medicare), state tax, and self-employment tax. All calculators use official IRS methodology and run client-side — no data sent anywhere.

Tax Calculators (7 tools)

Every calculator below runs in your browser. Built on IRS Publication 15-T and updated weekly.

Take-Home Pay Calculator

Federal income tax, FICA, state tax, and 401(k) pre-tax contributions. Shows gross-to-net breakdown per pay period.

For: W-2 employees wanting to understand their paycheck

Tax Estimator

Federal + state + FICA tax estimate for salary, hourly, or 1099 income. Compare marginal vs. effective rates.

For: W-2, 1099, and self-employed workers

Income Breakdown Calculator

See how your gross income splits between federal tax, state tax, FICA, and take-home pay. Includes marginal rate visualization.

For: Workers comparing raises, freelancers, job offer evaluators

Employer Cost Estimator

Full cost of putting someone on payroll: employer FICA, FUTA, health, 401(k) match. Beyond just the salary number.

For: HR teams, CFOs, hiring managers

Overtime Calculator

FLSA-compliant 1.5x and double-time calculations. Handles 40-hour workweek and 7th consecutive day rules.

For: Non-exempt hourly workers, payroll admins

Retirement Stack Calculator

401(k) + HSA + IRA contribution impact in one view. Shows federal tax savings from pre-tax contributions.

For: Workers maximizing tax-advantaged retirement savings

Salary Calculator

Annual, monthly, weekly, hourly conversions with state tax adjustments. Useful for offer comparisons.

For: Job seekers, HR teams, freelancers

Tax Guides (13 guides)

In-depth tax research and guides. All data sourced from IRS, SSA, and official US sources.

State Income Tax Brackets 2026

All 50 states + DC, with top marginal rate, no-tax states, and state-specific notes. Updated October 2026.

Federal Tax Brackets 2026

All 7 federal tax brackets, standard deduction, EITC thresholds, capital gains rates. IRS Rev. Proc. sourced.

FICA Wage Base History 1999–2026

Social Security wage base, Medicare rate, FICA tax cap. 27 years of data for retirement and payroll planning.

What is FICA Tax?

Social Security + Medicare breakdown. Who pays, rate history, wage base limits, and self-employment equivalents.

Gross vs Net Pay

What comes out of your paycheck. Federal tax, state tax, FICA, pre-tax deductions, and post-tax deductions.

How to Read Your Paycheck

Decode every line on your pay stub. W-2 implications, year-to-date totals, and what to verify each pay period.

How Overtime Works

FLSA §778 overtime rules. 1.5x regular rate, double-time after 12 hours, 7th consecutive day rules.

Self-Employment Tax 1099 vs W-2 2026

Self-employment tax (15.3%), QBI deduction, half-SE-tax deduction. When to incorporate vs. stay 1099.

OBBBA Tax Changes 2026

One Big Beautiful Bill Act tax changes effective 2026. Tips, overtime, auto loan interest, and senior deductions.

No-Tax State Math, Honestly

TX, FL, WA, NV, etc. — what "no state income tax" really means for your take-home pay and total tax burden.

Healthcare Premium Take-Home 2026

Pre-tax vs. post-tax health insurance, HSA vs. FSA, and ACA premium tax credits. Effect on take-home pay.

Real Take-Home Pay by State 2026

After-tax, after-inflation salary comparison across all 50 states. For remote workers evaluating relocation.

Take-Home Pay Calculation

Step-by-step walkthrough of how take-home pay is calculated. Federal tax brackets, FICA, pre-tax deductions.

Building a tax calculator for your team?

SalaryLabs builds branded tax and take-home pay calculators for HR portals and employee onboarding. Quick Build from $4,875 (founding rate, 5 customers max).

Learn about custom calculators →

About These Tax Tools

All tax calculators on this page are built on official US government data:

IRS Publication 15-T — Federal income tax withholding methodology
Social Security Administration — Wage base, contribution limits (updated annually)
State Department of Revenue — All 50 states + DC

Calculators run entirely in your browser (client-side JavaScript). No data is sent to our servers, no account required. See our full methodology for details.

Last updated: October 10, 2026. Updated as new tax tools and guides are added.