CalcMountain

Loans & Debt Calculators

Auto loans, student loans, debt payoff

Every loan boils down to four numbers: the amount borrowed, the interest rate, the term, and what's left at the end. The same payment can mean very different total interest costs depending on how those four interact, and small changes — paying biweekly, refinancing one point lower, adding $50 to each payment — can save thousands of dollars and shave years off the payoff date.

Our loan and debt calculators cover personal loans, auto loans, student loans, HELOCs, and consolidation scenarios. The APR calculator shows the true all-in cost of a loan including fees, which is often substantially higher than the advertised "interest rate." Loan comparison lets you weigh competing offers side-by-side. The accelerated debt payoff and debt consolidation calculators are particularly useful for people juggling multiple obligations: they show whether the avalanche method (highest-rate first) or snowball method (smallest-balance first) saves more, and how much faster either approach finishes vs minimum payments alone.

If you're carrying student loans, the loan forgiveness tax calculator estimates the tax impact of forgiven balances under income-driven repayment plans — a number that can surprise borrowers when forgiveness finally arrives. For specialty financing, we have dedicated calculators for boat loans, RV loans, and the rent-a-payment (RAP) plan structure.

All of our amortization calculators use the standard monthly-payment formula taught in finance textbooks and endorsed by the CFPB. Where state-specific rules apply (e.g., usury caps or anti-predatory-lending disclosures), we use the federal default; check your state attorney general for local rules. Results are estimates; your actual loan offer will reflect your credit profile, lender fees, and any rate-lock terms negotiated with the lender.