Free financial calculators for United States. Mortgage, tax, investment, retirement calculators with US-specific rates and rules.
This page brings together free calculators built for the US financial system — mortgages, federal and state income tax, retirement accounts, loans, and savings. Pick a category below or jump straight to the calculator you need; every tool uses US dollars, American terminology, and the January–December tax year.
The United States runs on a January to December tax year, with income tax collected at both the federal level and, in most states, the state level. Retirement savings are commonly built through employer-sponsored 401(k) plans and individual IRAs, while the Federal Reserve sets the benchmark "Fed funds rate" that influences mortgage and loan rates across the country (example rates used in our calculators are for illustration only — actual rates vary by lender and change frequently).
The Mortgage Calculator helps you estimate monthly payments including principal, interest, taxes, and insurance. The Income Tax Calculator gives a quick estimate of your federal tax bill, while the Take-Home Paycheck Calculator shows what actually lands in your bank account after deductions. For the future, the 401(k) Calculator and Retirement Calculator help you project long-term savings growth.
Yes. Every calculator on this site is completely free, with no signup, account, or hidden charges required.
The income tax and paycheck calculators focus on federal calculations and common deductions. State tax rules vary widely, so always check your specific state's rules or consult a tax professional for an exact figure.
No — all rates shown in examples are illustrative only and do not reflect current market rates. Mortgage, loan, and savings rates change frequently and vary by lender, so always enter your own quoted rate.
Yes, every calculator is designed to work on mobile, tablet, and desktop browsers with no app download needed.
Disclaimer: The information provided on this page is for educational purposes only. Always consult a qualified financial advisor or tax professional before making financial decisions.