Conforming Loan

A conforming loan is a mortgage that meets the standards set by Fannie Mae and Freddie Mac, including limits on loan size, borrower debt-to-income ratios, and credit requirements. Conforming loans are the benchmark for mortgage pricing and availability in the U.S. secondary market.

What “conforming” means

A conforming loan meets the underwriting standards of Fannie Mae and Freddie Mac, the government-sponsored enterprises (GSEs) that dominate the mortgage secondary market. These standards include:

Loan amount limit: The maximum loan size (2024 baseline: $766,550 for single-family homes; higher in high-cost counties, up to $1.15M+).

Debt-to-income ratio: Borrower’s total monthly debt (including the new mortgage) cannot exceed 43% of gross monthly income.

Credit score: Minimum FICO score (typically 620 for conventional; 580 for FHA-insured loans).

Documentation: Standard income, employment, and asset documentation.

Property standards: Single-family homes, condos, townhouses in acceptable condition; no non-owner-occupied investment properties (generally).

Conforming loan limits by county

Fannie Mae and Freddie Mac set maximum loan amounts by county. In high-cost areas (California, New York, Massachusetts, etc.), limits are higher ($1.0M+). In lower-cost areas, limits are lower ($600K–$800K).

A borrower exceeding the limit for their county must use a jumbo loan, which has stricter requirements and higher interest rates.

Why conforming loans matter

Conforming loans are the workhorse of the U.S. mortgage market. They make up roughly 40–50% of all mortgages originated. For lenders, conforming loans are the easiest to sell: Fannie Mae and Freddie Mac will buy nearly any conforming loan that meets their guidelines.

This liquidity translates to:

• Lower interest rates: Lenders can sell conforming loans easily, so they price them competitively.
• Availability: Most lenders originate conforming loans because they know they can sell them.
• Standardization: Consistent underwriting and documentation reduces borrower burden.

Mortgage insurance on conforming loans

If a borrower puts down less than 20%, lenders require mortgage insurance. This is typically private mortgage insurance (PMI) for conventional conforming loans.

Once the borrower builds 20% equity (either through payments or appreciation), they can request PMI removal.

FHA-insured conforming loans have FHA mortgage insurance (MIP) instead of PMI, with different costs.

Refinancing conforming loans

Conforming loans are easy to refinance because they are in high demand. A borrower with a conforming loan can refinance to another conforming loan when rates fall, typically with minimal hassle.

Conforming versus non-conforming

Conforming loans: Meet GSE standards, easily sold, lower rates.

Non-conforming loans: Do not meet GSE standards (too large, wrong property type, borrower doesn’t meet guidelines). Include jumbo loans, portfolio loans (lenders hold instead of selling), and loans for non-standard properties.

Recent policy: adjustments for inflation

Fannie Mae and Freddie Mac adjust conforming loan limits annually for inflation. In high-inflation periods, limits increase quickly. This adjusts the conforming versus jumbo boundary.

For example, the 2024 baseline conforming limit was $766,550, up significantly from $647,200 in 2021.

Secondary market and pricing

Conforming loans are highly liquid. Lenders can:

1. Originate a conforming loan.
2. Sell it to Fannie Mae, Freddie Mac, or a mortgage-backed securities (MBS) investor.
3. Recoup capital to lend again.

This liquidity makes conforming loans cheaper to originate, savings that lenders pass to borrowers in the form of lower rates.

Jumbo loans, by contrast, are harder to sell (fewer buyers), so lenders charge higher rates and fees.

GSE loan limits and flexibility

Fannie Mae and Freddie Mac set loan limits but can adjust them through regulation. In recent years, they have supported higher-priced mortgages (increasing limits) to accommodate higher home prices in expensive metros.

There is ongoing policy debate about whether conforming limits should be higher or whether too much of the mortgage market depends on government support.

See also