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41+ free calculators for mortgages, investing, taxes, and budgeting. No signups, no paywalls — your data never leaves your browser.
Popular Calculators
View all →Mortgage Calculator
Plan home payments with accurate PITI breakdown and amortization.
MortgageCompound Interest
Watch your investment grow with compounding over any time horizon.
InvestingLoan Calculator
Estimate monthly payments, total interest, and full amortization schedules.
Loans401(k) Calculator
Project your retirement balance with employer match and investment growth.
InvestingTax Calculator
Estimate federal and state taxes on any income with effective tax rate.
TaxesBudget Calculator
Plan your monthly budget by tracking income vs. expenses across categories.
BudgetingPaycheck Calculator
Estimate take-home pay after federal and state taxes and deductions.
IncomeHome Affordability
Estimate the maximum home price you can afford based on income and debts.
MortgageRoth IRA Calculator
Project your Roth IRA balance at retirement with annual return estimates.
InvestingBrowse by Category
All categories →Plan your monthly budget, set savings goals, and build a debt payoff strategy.
→Project portfolio growth, plan retirement contributions, and evaluate investment opportunities.
→Calculate loan payments, assess debt ratios, and compare financing options.
→Analyze mortgages, estimate home affordability, and evaluate rental property returns.
→Convert pay rates, estimate take-home pay, and calculate creator earnings.
→Estimate federal and state taxes, self-employment tax, and financial aid eligibility.
→Analyze profitability, pricing, and key business metrics for your company.
→Compare credit card rewards, calculate cashback, and optimize your spending.
→Convert currencies and financial values across global markets.
→Why FinanceMaxing
Financial calculators that actually work for you.
Most calculator sites are ad farms with outdated formulas. We built something better — fast, private, and genuinely useful tools for real financial decisions.
Every calculation runs entirely in your browser. Your financial data never touches our servers — no accounts, no cookies, no tracking pixels. Close the tab and it's gone.
Results update as you type — no submit buttons, no loading spinners, no page reloads. Change a single input and watch every output recalculate in real time.
Every formula is sourced from official financial standards — IRS tax brackets, FHA lending guidelines, SEC-standard present value models. Cross-checked against institutional tools.
Fully responsive on phone, tablet, or desktop. No app to install, no software to download. Bookmark it and use it whenever you need to make a financial decision.
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FinanceMaxing
- No signup — results show instantly
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- Current-year rates and brackets
- Every formula cited from official sources