This loan amount calculator finds how much you can borrow for a given monthly payment, rate, and term — the reverse of a payment calculator. Enter the values above.
Formula
P = M × [ (1+r)ⁿ − 1 ] ÷ [ r(1+r)ⁿ ]
Example
$500/month at 5% over 5 years: you could borrow about $26,495.
What affects it
A higher payment, lower rate, or longer term all increase the loan amount you can support.
Good to know
These results are estimates for educational purposes only and are not financial advice. Rates, fees, and terms vary by lender and situation — confirm figures with a licensed professional before making decisions. Last updated: August 2026.
Frequently Asked Questions
How much can I borrow for a $500 payment?
At 5% over 5 years, about $26,500. A lower rate or longer term raises the amount.
How do I calculate the loan amount?
Use the reverse amortization formula with your target payment, the monthly rate, and the number of payments.
Does the interest rate change how much I can borrow?
Yes. A lower rate lets the same payment support a larger loan.