Cost of Funds Index (COFI)
Last updated 2026-08-01
FTC
Updated 2026-08-01
An index that is used to determine interest rate changes for certain adjustable-rate mortgage (ARM) loans. It is based on the weighted monthly average cost of deposits, advances, and other borrowings of members of the Federal Home Loan Bank of San Francisco.
FTC Real Estate Terms
FTC · pp. 4–5
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