About Paycheck101

Paycheck101 builds free calculators that answer everyday money questions: how much you will take home, what a salary is worth per hour, how much tax comes out of a bonus, and what a purchase costs with sales tax.

Our principles

• Official numbers. Every rate comes from the IRS, the Social Security Administration or a state revenue department, and each page links to its sources.
• Clear about limits. We explain what each estimate includes and leaves out. See how we calculate.
• Private. Calculations run entirely in your browser. We never see or store the numbers you type.
• Kept current. Tax tables are reviewed every year and when laws change. Last review: 2026-11-10.

The site is free to use and supported by advertising. Spotted an error? Let us know and we will fix it.