Decision instrument
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.
Your inputs
Adjust the fields and read the result panel alongside.
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.
Reference points
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.
Next step
What to do next
Move from calculation to action with the most relevant next step.
Example
Worked example
A realistic example to show how this tool can support an actual 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.
Avoid mistakes
Common mistakes
A few things that can lead to misleading results or poor decisions.
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Keep exploring
Continue with closely related tools in the same decision path.
Guides
Learn more
Understand the strategy behind the numbers before choosing your next step.
Compare
Compare your options
Move into commercial comparisons only after you understand your result.
FAQ
Frequently asked questions
Helpful answers about this tool, its assumptions, and how to use the result.
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.