Finance Calculators

Our free finance calculators cover the money questions people ask most often in the US: how much a loan or mortgage will cost, how fast savings and investments can grow, how much tax you may owe and whether your retirement plan is on track. Each calculator shows the formula it uses and a worked example, and pages that depend on a yearly limit or rate link to the official source. Choose a category below to get started.

Auto and Boat

Auto Loan Calculator
Cash Back or Low Interest Calculator
Auto Lease Calculator
Boat Loan Calculator

Tax and Salary

Income Tax Calculator
Salary Calculator
Marriage Tax Calculator
Estate Tax Calculator
Sales Tax Calculator
VAT Calculator

Your guide to our finance calculators

Frequently Asked Questions

What are Finance Calculators?

Finance calculators are online tools that help you perform financial calculations quickly and accurately. They can be used to estimate loans, mortgages, interest, savings, investments, taxes, retirement plans, and many other financial values without manual calculations.

Are these finance calculators free to use?

Yes. All of our finance calculators are free to use, with no account or sign-up needed.

How accurate are the calculation results?

They use standard financial formulas, and each page shows its formula and a worked example so you can check the math. Results are estimates: your actual figures can differ because of lender fees, taxes, rounding or terms specific to your loan or account.

Which finance calculators are available on this page?

This page lists every finance calculator on the site, grouped into mortgage and real estate, interest and investment, auto, tax and salary, retirement, and loans and debt. For example, you will find loan, amortization, compound interest, 401(k), Social Security and income tax calculators.

Can I use these calculators on my mobile phone?

Absolutely. All of our finance calculators are fully responsive and work smoothly on desktops, tablets, and smartphones, allowing you to calculate your finances anytime and anywhere.

Why should I use an online finance calculator?

Online finance calculators save time, reduce manual calculation errors, and help you compare different financial scenarios. They make it easier to plan your budget, estimate payments, and make informed financial decisions before committing to any loan or investment.