Understanding 50-Year Mortgages & The 40-Year Interest-Only Option (2025 Guide)

Why Buyers Are Asking About 50-Year Mortgages

Affordability pressures have reshaped the way people in South Florida shop for homes. We see it daily across Fort Lauderdale, Weston, and Pembroke Pines. Rising prices and higher interest rates push buyers to explore every possible financing tool. That's where the talk of 50-year mortgages started — not because they exist today in mainstream U.S. lending, but because buyers are trying to make ownership manageable.

Internationally, 50-year mortgages are offered in countries like Japan and parts of the UK, but here in the U.S., these products have not gained traction. Still, the idea remains attractive: stretch payments over a longer period to reduce monthly costs. That’s where the new 40-year interest-only program becomes the real, practical solution available today.

What Buyers Really Mean When They Ask About 50-Year Mortgages

When buyers call me and ask about 50-year mortgages, they’re almost always getting at the same core concerns:

“How can I lower my monthly payment?”
“Is there a loan that gives me flexibility early on?”
“Can I qualify for more home with a longer term?”

The new 40-year interest-only program answers every one of those questions — while staying within today’s lending reality.

Introducing the 40-Year Interest-Only Program

The uploaded document from Rize Mortgage explains the program: a 40-year fixed-rate mortgage with the first 10 years interest-only. This structure gives buyers lower monthly payments early on and predictable payments long-term.