Conventional Loan Modification: The Fannie Mae & Freddie Mac Flex Mod Guide

Most conventional mortgages in the U.S. are eventually purchased by Fannie Mae or Freddie Mac, the two government-sponsored enterprises (GSEs) that set the rules for a large share of the mortgage market. Loans they own are generally evaluated for modification under the Flex Modification program.

What Flex Modification Does

Flex Modification is a standardized framework built to be simpler than the layered, multi-program approach used during the HAMP era. Rather than requiring a homeowner to be evaluated against several separate programs, it applies one consistent process using a defined sequence of tools:

• Capitalizing past-due amounts into the balance
• Extending the loan term, often up to 40 years
• Reducing the interest rate
• Applying principal forbearance if the loan is significantly underwater and other tools alone aren't enough to reach the target

How the Target Payment Is Set

Servicers apply these tools in sequence, checking the resulting payment against a target reduction, until the modified payment reaches an affordable level relative to the homeowner's documented income — commonly a defined percentage reduction to the principal and interest payment for eligible delinquent loans.

Flex Modification was built specifically to reduce the guesswork of the HAMP era — one framework, one waterfall, applied consistently across servicers for GSE-owned loans.

Streamlined Options

For certain delinquency levels, Fannie Mae and Freddie Mac also offer streamlined modification paths that reduce documentation requirements — consistent with research showing that streamlined, lower-friction offers meaningfully increase how many homeowners actually complete a modification. See our statistics page for the data behind that finding.

How to Find Out Who Owns Your Loan

You can check whether Fannie Mae or Freddie Mac owns your loan using each enterprise's free online loan lookup tool, which tells you which Flex Modification guidelines would apply if you need to pursue a modification.

Once you know your loan is GSE-owned, the general application process — hardship documentation, income verification, and a hardship letter — still applies. See our step-by-step guide.