Note Payment Calculator

Don't know the monthly payment? Enter the UPB, interest rate, and remaining term to calculate it instantly.

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Calculate Monthly Note Payment
The remaining balance the borrower owes
The annual interest rate on the note
Number of months left on the note
Lump sum due at end of term, if any
💡 Next step: Take this monthly payment and plug it into the Note Yield Calculator to find out what yield you'll earn at any purchase price.
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How to Use This Calculator

When you're analyzing a note and the seller doesn't know (or won't tell you) the monthly payment, you can calculate it yourself from three numbers: the remaining balance, the interest rate, and how many months are left.

What is UPB?

UPB stands for Unpaid Principal Balance — what the borrower still owes today. This is not the original loan amount; it's the current remaining balance after years of payments. Always get a current payoff statement to verify the real UPB before buying.

Why Does the Payment Matter?

The monthly payment is the foundation of every other note calculation. Your yield, your offer price, your cash flow — all of it starts with knowing exactly what the borrower pays each month. If a seller gives you a payment that doesn't match the UPB, rate, and term, that's a red flag worth investigating.

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