Coinbase closes first Fannie Mae-backed mortgage tied to Bitcoin

Coinbase announced on June 4 that the first Fannie Mae‑backed U.S. mortgage secured by Bitcoin collateral has closed. Better originated the loan and will service it using Coinbase technology and custody services. The program was first unveiled with Better in March and is scheduled for a nationwide rollout later this summer.

Under the product, buyers receive a standard conforming Fannie Mae mortgage for the property and a separate loan secured by Bitcoin or USDC to fund the down payment. The crypto pledged as collateral remains in custody for the life of the down‑payment loan and is returned when that obligation is repaid.

Borrowers can choose 15‑year or 30‑year fixed‑rate mortgage options through the program. Coinbase has said price swings in Bitcoin do not directly change the mortgage terms, though the down‑payment loan is subject to collateral levels and management rules.

Coinbase previously set the initial collateral requirement at a minimum of 250% of the down‑payment loan amount. The loans use ongoing collateral monitoring and margining to maintain coverage and may trigger liquidation of collateral if required by the loan terms.

The use of conforming, Fannie Mae‑backed mortgages connects the product to the regulated U.S. housing finance system. The mortgages follow the same basic backing structure used across much of the conventional mortgage market.

Open questions remain about how the model will perform at scale. Issues flagged by market participants include crypto price volatility, the mechanics of collateral monitoring and liquidation, the effect of housing market stress on combined mortgage and crypto‑collateral positions, and the long‑term regulatory treatment of crypto‑backed lending. Consumer protections and underwriting standards for borrowers using digital assets as collateral are still being defined.

Coinbase and Better intend to use the summer rollout to test demand beyond early crypto adopters and to refine operational controls and collateral processes.