PFC · PERSONAL FINANCE CALCULATORS
Free personal finance calculators
A clearer picture of your next money decision. Compare mortgage costs, plan for retirement, and explore your taxes.
18 free tools No sign-up CSV downloads
Find the right calculator
Choose the area you want to explore.
Mortgages & home buying
Plan a purchase, compare loans, or explore refinancing.
Explore mortgage toolsRetirement
Plan contributions and compare retirement income scenarios.
Explore retirement toolsTaxes
Estimate U.S. federal taxes and payments for 2026.
Explore tax toolsSavings & everyday finances
Build savings, work toward debt freedom, and track net worth.
Understand the numbers behind your plan
Each calculator includes a worked example, its method, and its assumptions. Change the inputs to compare scenarios, then download the breakdown. Estimates use U.S. dollars; tax tools clearly identify their tax year and link to source material.
A little guidance before you calculate
Learn how the tools work and what to consider.
Calculator guides
- Mortgage Calculator vs. ARM Calculator: When to Use Each
- How to Use Our 401(k) Calculator to Plan Your Retirement
- 2026 Tax Brackets & How to Use the Capital Gains Calculator
- Traditional vs. Roth IRA: Contributions, Taxes, and Withdrawals
- Refinance Scenarios: Lower Payments, Shorter Terms, or Financed Costs?
- How to Use the Refinance Calculator
From the blog
- FHA Loans: Down Payments, Mortgage Insurance, and Monthly Costs
- 2026 Roth IRA Contribution Limits and Income Phaseouts
- Refinancing Your Mortgage: Costs, Break-Even, and Time Horizon
- How Rising Interest Rates Affect Your Mortgage Calculator
- Capital Gains Tax Planning: 3 Strategies to Minimize Your 2026 Tax Bill
Common questions about money and calculators
Quick answers to help you choose a tool and understand your results.
What's the difference between a mortgage and a loan?
A loan is borrowed money that you agree to repay. A mortgage is a type of loan secured by real estate, often used to buy a home. Loans can also finance cars, education, or other expenses, and some do not require collateral. A mortgage calculator estimates payments from the loan amount, rate, and term.
How do I calculate net worth?
Net worth equals your total assets minus your total liabilities. Add the current value of cash, investments, retirement accounts, property, and other assets, then subtract mortgage balances, credit card balances, and other debts. For example, $300,000 in assets minus $180,000 in debts gives a net worth of $120,000. Include the full home value and the mortgage debt separately to avoid double-counting.
What's the difference between debt avalanche and snowball?
Both methods keep minimum payments on every debt and direct extra money to one balance. Debt avalanche targets the highest interest rate first and generally reduces interest costs. Debt snowball targets the smallest balance first, creating earlier paid-off accounts that may help motivation. After paying off a debt, roll its payment into the next one. Compare both using the same monthly budget.
What is mortgage amortization?
Mortgage amortization is the gradual repayment of a home loan through scheduled payments of principal and interest. With a standard fixed-rate, fully amortizing loan, the principal-and-interest payment stays level while the split changes: earlier payments contain more interest, and later payments repay more principal. Property taxes and insurance are separate costs and can change.
How do I know if refinancing my mortgage is worth it?
Compare the cost of keeping your current loan with the proposed loan over the time you expect to keep it. Include closing costs, payments, and both remaining loan balances. A lower payment alone does not establish savings, because a longer term can leave more debt. The PFC refinance calculator compares these costs at your chosen horizon; it excludes taxes, mortgage insurance, and investment opportunity cost.
How does compound interest grow my savings?
Compound interest means earning interest on your deposits and on interest already added to the account. For example, $1,000 earning a constant 5% APY becomes $1,102.50 after two years with no deposits or withdrawals, before taxes or fees. Regular deposits can increase the balance further. Actual rates can change; the savings calculator uses the constant APY you enter.
Are these financial calculators free to use?
Yes. All 18 PFC calculators are free, with no account or sign-up required. Change the inputs, compare scenarios, and download calculation breakdowns as CSV files. Results are planning estimates based on the displayed assumptions. Review each tool’s scope, and use the labeled tax year when working with tax or retirement contribution rules.
Learn more: CFPB mortgage terms · Investor.gov net worth basics · CFPB debt repayment methods.