What Is a Conforming vs Jumbo Loan Calculator?

This tool prices the same loan amount at both a conforming rate and a jumbo rate, so you can see exactly what crossing the conforming limit costs. The conforming limit — $766,550 in most of the U.S. in 2024 — marks the ceiling for loans that Fannie Mae and Freddie Mac will purchase, and rates below that line are typically lower.

How It Works

Both scenarios use the standard mortgage payment formula: P × r(1+r)ⁿ ÷ ((1+r)ⁿ − 1), where r is the monthly rate and n the number of monthly payments. The calculator applies your conforming and jumbo rates to the same principal and term, then derives monthly, annual, and 30-year interest savings from the gap.

Understanding Your Results

The headline number is the conforming monthly payment; the stat bar and chart show the jumbo alternative and the savings. If your loan amount exceeds the limit, the result labels the loan as jumbo — meaning the conforming scenario is the one you could only reach by restructuring or finding a lender with a different limit. The breakdown table and summary always reconcile to the same total-interest figure.