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Loan Calculator

Model the monthly payment, total interest, and term trade-off before you sign a lender offer. The payment is the easy part; the lifetime cost is what tells you whether the loan is actually cheap.

For plain-language APR context, see the CFPB auto loan key terms.

Methodology & standardsRuns on your device

Inputs

Results update live

Use whole months (for example, 5 years or 5.5 years).

Borrowing check

Compare the total loan cost before focusing on the monthly payment

A loan can look affordable month to month while still being expensive over the full term. Use the calculator to compare payment, interest, and term length before accepting an offer or refinancing.

Trust note: Loan estimates are for planning only. Actual lender offers can include fees, eligibility rules, credit checks, taxes, and rate changes.

Reference points

CFPB loan resourcesInvestor.gov calculators
Plan early payoffCheck debt payoff optionsCompare fixed and variable loans

Methodology

  • Use the loan amount, annual percentage rate, and term length to estimate the amortized monthly payment.
  • Compare total interest across terms so a lower payment does not hide a much higher lifetime cost.
  • Pressure-test the payment against income, emergency savings, and other fixed obligations before applying.

Practical examples

  • A $25,000 loan at 8 percent for 5 years has a payment near $507 and total interest around $5,415.
  • A longer term can reduce the monthly payment but usually increases total interest.
  • A small rate improvement matters more on large balances or long repayment terms.

Common mistakes to avoid

  • Do not compare loans using monthly payment only.
  • Do not ignore origination fees, early repayment rules, late fees, or variable-rate risk.
  • Do not assume approval terms will match an advertised rate without checking eligibility and credit impact.

Interpretation

What your result means

A lower monthly payment is not a win if it adds years of interest. Compare the total cost first, then ask whether the payment still fits the rest of your budget.

Example

Worked example

A realistic scenario showing how the calculation guides a practical decision.

A $25,000 loan at 8% over 5 years produces a payment near $506.91 per month.

Over the full term, you repay about $30,414.59, so roughly $5,414.59 is interest. That gap is what you are trading for a lower monthly payment.

Watch out

Common mistakes

  • Comparing monthly payment without looking at total interest.
  • Ignoring origination fees, prepayment penalties, or variable-rate risk.
  • Using a term that only works in a perfect month.
  • Assuming lender quotes include insurance or taxes when they do not.

Continue your analysis

Where this number takes you next

Each step builds on the result above.

Loan Payoff CalculatorToolTest whether accelerating repayment is worth the cash outlay.Debt Payoff CalculatorToolBuild a payoff plan if this loan is part of a broader debt stack.Mortgage CalculatorToolModel home-loan payments with the same fixed-rate assumptions.

Related tools

Adjacent decisions

Loan Payoff CalculatorToolSee how extra payments change your payoff dateDebt Payoff CalculatorToolCompare payoff strategies across multiple balancesSalary CalculatorToolCheck whether the payment fits your take-home pay

Further reading

Guides

CFPB auto loan key termsGuidePlain-language context on APR, amortization, and loan vocabulary.Loan Payoff CalculatorToolSee how extra payments change interest cost over time.Debt Payoff CalculatorToolCompare snowball and avalanche strategies across multiple balances.

Trade-offs

Comparisons

Debt consolidation loan vs balance transferCompareCompare payoff structures after you know the payment you can afford.

FAQ

Frequently asked questions

How the calculation works and where its limits are.

Does this include fees or insurance?

No. The estimate assumes a fixed rate, regular monthly payments, and no origination fees, insurance, taxes, or prepayment penalties.

Why can the final payment differ slightly?

Payments are rounded to cents. The last payment may adjust by a few cents to clear the remaining balance.

Should I focus on monthly payment or total interest?

Start with whether the monthly payment fits your budget, then compare total interest. A longer term can lower the payment while increasing lifetime cost.