# SureCalcs > Free, fast and accurate US financial calculators: mortgage, loans, taxes, salary, retirement and investing. Clear formulas, shareable results, no sign-up. SureCalcs publishes 24 free calculators for US personal finance. Every calculator page renders its default results in static HTML, shows the formula (MathML + plain text), a worked example, precomputed reference tables, FAQs and cited primary sources (IRS, SSA, BLS, CFPB, Federal Reserve, Freddie Mac). Inputs can be pre-filled through URL query parameters, so results are shareable. Tax figures are for tax year 2026. ## Mortgage & Real Estate - [Mortgage Calculator](https://www.surecalcs.com/mortgage-calculator/): Monthly house payment (PITI) with taxes, insurance, PMI, HOA and extra payments. - [House Affordability Calculator](https://www.surecalcs.com/house-affordability-calculator/): Maximum home price you can afford based on income, debts and DTI rules. - [Amortization Calculator](https://www.surecalcs.com/amortization-calculator/): Month-by-month amortization schedule with extra payments. - [Refinance Calculator](https://www.surecalcs.com/refinance-calculator/): New payment, monthly savings and break-even month for a mortgage refinance. - [Rent vs. Buy Calculator](https://www.surecalcs.com/rent-vs-buy-calculator/): Net cost of renting versus buying a home over your time horizon. - [Debt-to-Income (DTI) Ratio Calculator](https://www.surecalcs.com/debt-to-income-calculator/): Front-end and back-end DTI ratio compared with lender limits. ## Loans & Debt - [Loan Calculator](https://www.surecalcs.com/loan-calculator/): Payments and interest for amortized loans, deferred loans and bonds. - [Auto Loan Calculator](https://www.surecalcs.com/auto-loan-calculator/): Monthly car payment with sales tax, fees, trade-in and rebates. - [Payment Calculator](https://www.surecalcs.com/payment-calculator/): Monthly payment for a fixed term, or payoff time for a fixed payment. - [Interest Rate Calculator](https://www.surecalcs.com/interest-rate-calculator/): The real interest rate of a loan from its amount, payment and term. - [Credit Card Payoff Calculator](https://www.surecalcs.com/credit-card-payoff-calculator/): Months to pay off a credit card and the interest you will pay. ## Investing & Retirement - [Compound Interest Calculator](https://www.surecalcs.com/compound-interest-calculator/): Growth of savings with compounding and regular contributions. - [Investment Calculator](https://www.surecalcs.com/investment-calculator/): Future value of an investment, or what you need to reach a goal. - [Interest Calculator](https://www.surecalcs.com/interest-calculator/): Interest earned with deposits, taxes and inflation; simple vs. compound. - [Retirement Calculator](https://www.surecalcs.com/retirement-calculator/): Retirement savings target, on-track check and sustainable withdrawals. - [401(k) Calculator](https://www.surecalcs.com/401k-calculator/): 401(k) balance at retirement with employer match and 2026 limits. - [Finance Calculator (TVM)](https://www.surecalcs.com/finance-calculator/): Solve for FV, PV, PMT, N or I/Y like a financial calculator. - [Inflation Calculator](https://www.surecalcs.com/inflation-calculator/): Buying power of the dollar since 1913 using official CPI data. ## Taxes & Income - [Income Tax Calculator](https://www.surecalcs.com/income-tax-calculator/): 2026 federal and state income tax, effective rate and refund estimate. - [Paycheck Calculator](https://www.surecalcs.com/paycheck-calculator/): Take-home pay per paycheck after 2026 federal, state and FICA taxes. - [Salary Calculator](https://www.surecalcs.com/salary-calculator/): Convert pay between hourly, weekly, monthly and annual amounts. - [Sales Tax Calculator](https://www.surecalcs.com/sales-tax-calculator/): Price before/after sales tax with 2026 rates for every state. - [No Tax on Overtime Calculator](https://www.surecalcs.com/no-tax-on-overtime-calculator/): Federal deduction and tax savings on qualified overtime pay (2025–2028). - [No Tax on Tips Calculator](https://www.surecalcs.com/no-tax-on-tips-calculator/): Federal deduction and tax savings on qualified tips (2025–2028). ## State-by-state pages Each of these calculators also has one page per state (51 pages: the 50 states and DC) at /{calculator}/{state}/, preset with that state's data and comparing it with neighboring states. The main page's "by state" section links to all of them. - [Salary conversions](https://www.surecalcs.com/salary/): pages such as https://www.surecalcs.com/salary/25-dollars-an-hour/ and https://www.surecalcs.com/salary/60000-a-year/ give yearly, monthly, biweekly and weekly pay plus 2026 take-home pay in all 50 states for common hourly wages ($10-$100) and salaries ($20,000-$300,000). - [Mortgage Calculator by state](https://www.surecalcs.com/mortgage-calculator/#by-state): e.g. https://www.surecalcs.com/mortgage-calculator/texas/, https://www.surecalcs.com/mortgage-calculator/california/ - [Paycheck Calculator by state](https://www.surecalcs.com/paycheck-calculator/#by-state): e.g. https://www.surecalcs.com/paycheck-calculator/texas/, https://www.surecalcs.com/paycheck-calculator/california/ - [Income Tax Calculator by state](https://www.surecalcs.com/income-tax-calculator/#by-state): e.g. https://www.surecalcs.com/income-tax-calculator/texas/, https://www.surecalcs.com/income-tax-calculator/california/ - [Sales Tax Calculator by state](https://www.surecalcs.com/sales-tax-calculator/#by-state): e.g. https://www.surecalcs.com/sales-tax-calculator/texas/, https://www.surecalcs.com/sales-tax-calculator/california/ ## About - [All financial calculators](https://www.surecalcs.com/financial-calculators/) - [How we calculate (methodology and data sources)](https://www.surecalcs.com/methodology/) - [Editorial policy](https://www.surecalcs.com/editorial-policy/) - [About SureCalcs](https://www.surecalcs.com/about/)