Conforming loan limits define the boundary of standard agency conventional financing.
FHFA sets the annual conforming loan limits used by Fannie Mae and Freddie Mac. High-cost areas receive higher limits within the statutory ceiling.
Use the county, units and year
Conforming limits vary by number of units and can vary by county in designated high-cost areas. Alaska, Hawaii, Guam and the U.S. Virgin Islands have special statutory calculations.
Conforming is not the same as conventional
A conventional loan is simply a mortgage not insured or guaranteed by a federal housing agency. A conventional loan above the applicable conforming limit can still be conventional—it is generally classified as jumbo/non-conforming rather than eligible for ordinary Fannie/Freddie delivery.
Official sources
Fannie Mae Selling Guide · Freddie Mac Seller/Servicer Guide · FHFA Conforming Loan Limits
Agency guides control over summaries. Lender and mortgage-insurer overlays can be more restrictive.