True APR Calculator
Turn the money you actually receive and repay into one comparable annual rate.
Borrowing and ownership cost calculators
Use these 20 calculators to compare complete cash flows rather than an advertised rate, price or monthly payment. Every model exposes its inputs, method, assumptions, limits and printable result.
Use a calculator as a comparison, not a verdict
Match the boundary
Use the same loan amount, dates, mileage or ownership period for every option.
Enter written terms
Use the quote, statement or contract. Do not replace an unknown fee with a guess that looks exact.
Stress-test the answer
Change uncertain inputs. A useful result should survive a higher rate, lower resale value or earlier exit.
New to all-in cost? Start with the total-cost-of-ownership model. For a loan, first separate APR from the interest rate, then review the shared calculation methodology.
Borrowing and debt calculators
Compare the cash received, required payments, fees, payoff timing and remaining balance before choosing a loan or debt strategy.
Loan Total Cost Calculator
Separate the advertised rate from the dollars that leave your account.
Loan Comparison Calculator
Compare offers on the same amount and time horizon, including their different fees.
Refinance Break-Even Calculator
Find when closing costs are recovered - And whether the new term quietly increases lifetime cost.
Credit Card Payoff Calculator
See how payment size changes payoff time and interest instead of relying on the minimum.
Balance Transfer Calculator
Test whether the transfer fee buys enough interest savings before the promotion ends.
Loan Early Payoff Calculator
Measure interest saved and months removed without treating a future payment as guaranteed.
Debt Avalanche vs. Snowball Calculator
Run the same monthly budget through two payoff orders and expose the dollar tradeoff.
Mortgage Points Calculator
Find whether an upfront rate buy-down is recovered before you sell or refinance.
Vehicle cost calculators
Put financing, depreciation, fuel, equity and exit value on the same holding period instead of comparing monthly payments alone.
Lease vs. Buy Calculator
Normalize lease and purchase cash flows to the same months and expected use.
Auto Loan Equity Calculator
Follow loan payoff beside depreciation instead of guessing from the monthly payment.
Car Depreciation Calculator
Turn purchase and resale estimates into the ownership cost that rarely appears on a bill.
Fuel Cost Comparison Calculator
Use gallons per mile, real annual driving and a disclosed fuel-price assumption.
Car Ownership Cost Calculator
Model the costs that continue after the purchase price leaves the showroom.
Home and household calculators
Estimate the carrying, maintenance, energy, repair and subscription costs that continue after the purchase date.
Homeownership Cost Calculator
Put the mortgage beside the carrying costs a listing price cannot show.
Home Maintenance Reserve Calculator
Replace a generic percentage rule with component costs and remaining useful life.
Rent vs. Buy Calculator
Keep principal-built equity separate from costs consumed during the same years.
Repair vs. Replace Calculator
Put two imperfect options on an annualized cost basis without counting sunk cost.
Appliance Energy Cost Calculator
Convert watts, hours and electricity price into annual cost and efficiency payback.
Subscription Cost Calculator
Expose renewal compounding and the year when buying may become less expensive.