The Interest Rate–Benefit Connection
Interest rates are one of the most important factors in determining how much you can borrow with a reverse mortgage. Understanding this relationship helps you make better timing decisions and set realistic expectations about your available proceeds.
Expected Interest Rate
The expected interest rate is used to calculate your principal limit — the maximum amount you can borrow. For adjustable-rate HECMs, this rate is typically based on the 10-year LIBOR swap rate (or equivalent benchmark) plus the lender's margin. For fixed-rate HECMs, the note rate serves as the expected rate.
How Rates Affect Your Principal Limit
There is an inverse relationship between interest rates and your principal limit: as rates go up, your principal limit goes down, and vice versa. This is because higher rates mean more interest will accrue over the life of the loan, so HUD allows less initial borrowing to ensure the loan balance doesn't exceed the home's value.
The Principal Limit Factor Table
HUD publishes principal limit factor (PLF) tables that show the percentage of your home's value (or the FHA lending limit, whichever is less) that you can access. These factors are organized by the borrower's age and the expected interest rate. Even small changes in rates can significantly affect your available proceeds.
Fixed vs. Adjustable Rates
Fixed-rate HECMs lock in your interest rate for the life of the loan, providing payment certainty. However, they require a full draw at closing and typically have slightly higher rates than adjustable-rate options. Adjustable-rate HECMs offer more flexibility with payment options and access to a growing line of credit.
Rate Lock Considerations
When you apply for a reverse mortgage, your rate may be locked at application or at closing, depending on the lender and product. If rates are rising, an early rate lock can protect your principal limit. Discuss rate lock policies with your advisor.
Monitoring Rate Trends
If you're considering a reverse mortgage, keeping an eye on interest rate trends can help you time your application. However, don't let rate speculation delay your decision too long — the credit line growth feature of adjustable-rate HECMs can offset rate increases over time.
