Loan Comparison Calculator
Compare two loan offers side by side — monthly payment, total interest, and total paid.
Offer A
Offer B
Every calculation runs locally in your browser. Real offers may include fees, points, or closing costs not modeled here.
Offer A monthly payment
$1,799
$347,515 total interest
Offer B monthly payment
$2,451
$141,225 total interest
Offer B saves in total interest
$206,290
For informational and educational purposes only — not financial, investment, or tax advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
Why the lower monthly payment isn't always the cheaper offer
A longer term almost always produces a lower monthly payment, even at a similar or higher rate — but stretching the same balance over more months means paying interest for longer, which can add up to a larger total cost despite feeling more affordable month to month. Comparing total interest, not just the monthly number, is what actually reveals which offer costs less over the life of the loan.
Frequently asked questions
Why compare APR instead of just the interest rate?
APR folds in lender fees and points on top of the interest rate, giving a more complete picture of a loan's true cost — two loans with the same rate can have very different APRs.
Should I choose the lower monthly payment or the lower total cost?
It depends on your priorities: a longer term usually lowers the monthly payment but raises total interest paid over the life of the loan. This calculator shows both side by side so you can weigh the trade-off directly.