Loan Comparison Calculator

Put two loan offers side by side. Enter each loan's amount, rate, term and any upfront fees to see the monthly payment, total interest and total cost — and which loan is cheaper overall. Everything runs in your browser; nothing is stored.

Loan A

$
$

Loan B

$
$

Enter both loans to compare.

MetricLoan ALoan B
Monthly payment
Total interest
Upfront fees
Total cost

How to compare two loans

Comparing loans on the interest rate alone is misleading. A lower rate can hide higher fees, and a smaller monthly payment often means a longer term — and more total interest paid. To compare fairly, look at the total cost: the amount you borrow, plus every interest payment over the life of the loan, plus any upfront fees. Enter both offers above and the cheaper loan is highlighted instantly.

Monthly payment vs. total cost

The loan with the lowest monthly payment is not always the cheapest. Stretching a loan over a longer term lowers each payment but adds interest, so you can pay hundreds or thousands more overall. This calculator ranks by total cost, and when the cheaper loan has the higher monthly payment it says so — that's the tradeoff between paying less each month and paying less in the end. To see a single loan's full amortization, use the Loan Calculator; for a home loan with taxes and insurance, see the Mortgage Calculator.

Where fees fit in

Origination fees, points and other upfront charges are part of what a loan really costs. Enter them as a flat dollar amount or a percentage of the loan, and they're added to that loan's total cost. A loan advertising a lower rate can lose the comparison once its fees are counted. Everything is computed in your browser and nothing is stored.

Frequently Asked Questions

How does a loan comparison calculator work?
Enter the amount, interest rate (APR), term and any upfront fees for two loans. The calculator works out each loan's monthly payment and total interest using standard amortization, adds the fees, and compares the total cost of each so you can see which loan is cheaper overall.
Which loan is cheaper — the one with the lower rate or the lower monthly payment?
Not always the same loan. A lower rate can be outweighed by high upfront fees, and a lower monthly payment often means a longer term and more total interest. This tool ranks by total cost (principal + all interest + fees), and flags when the cheaper loan actually has a higher monthly payment.
Do the fees affect the comparison?
Yes. Upfront fees or points are added to each loan's total cost, so a loan with a slightly lower interest rate but a large origination fee can end up costing more. Enter fees as a flat dollar amount or a percentage of the loan amount.
Is my loan data saved or sent anywhere?
No. Everything is calculated in your browser as you type. Nothing you enter is uploaded, stored, or shared.