The numbers behind your next money decision.
Ten calculators for home loans, debt, retirement and pay. They use 2026 IRS figures, show the formula behind each result, and run entirely in your browser.
Mortgage & Home
Buying a home, or refinancing the one you have.
Debt & Loans
Cars, personal loans and credit cards — what borrowing really costs.
Retirement & Investing
Workplace plans, IRAs and the size of your nest egg.
Savings
How steady deposits grow over time.
Paycheck & Tax
From gross salary to what reaches your bank account.
No calculator matches that search. Try “loan”, “tax” or “retirement”.
How these are built
Current figures
Tax brackets, payroll limits and contribution caps follow the IRS and SSA numbers for 2026.
Visible math
Each page lists the formula, the assumptions and what the estimate leaves out.
Nothing stored
Calculations happen on your device. What you type is never sent to us.