Coinbase Makes History: First Crypto-Backed Conforming Mortgages Now Operational

Coinbase and Better Home & Finance have launched the first-ever U.S. conforming mortgage backed by cryptocurrency, a landmark move that directly integrates Bitcoin and USDC into the mainstream housing finance system. The product, backed by Fannie Mae, allows borrowers to pledge digital assets as collateral without selling, though with significant haircuts: Bitcoin is valued at just 40% of market price, while USDC is discounted to 80% for loan purposes.

How the Loan Structure Actually Works

The product is structured as two instruments layered together: a primary conforming Fannie Mae-backed mortgage and a second mortgage covering the down payment, secured by pledged crypto collateral. Coinbase holds the pledged assets in custody; borrowers do not transfer ownership, but the collateral is encumbered for the loan’s duration.

Get your house and keep your crypto.

Crypto-backed mortgages are here – increasing access to homeownership for millions of Americans.

Buy a home without converting your portfolio by using BTC or USDC as collateral for your down payment.

Offered by Better, powered by Coinbase. pic.twitter.com/9hfL3fVty5

The haircut is the defining constraint. To generate $80,000 in qualifying down payment credit using Bitcoin at the 40% valuation rate, a borrower must pledge $200,000 in BTC.

USDC’s 80% rate is more capital-efficient; $100,000 in USDC yields $80,000 in usable collateral, but still demands a meaningful overcollateralization buffer.

Fannie Mae’s volatility haircut framework is designed precisely to absorb the asset class’s price swings without triggering forced liquidations on the borrower side.

There are no margin calls. Collateral is not at risk from short-term price drops. The crypto position becomes actionable for the lender only afteror more days of delinquency, aligning with standard foreclosure timelines and deliberately decoupling the mortgage’s credit risk from crypto’s daily volatility.

Eligible assets must be held on a U.S.-regulated exchange with full AML compliance and a minimum-day documented holding history. Cold wallets are excluded. DeFi positions do not qualify. Staked assets are out. The framework is narrow by design; it trades flexibility for GSE compatibility, which is the only pathway to conforming status.

The policy architecture behind this traces directly to FHFA Director Pulte’s June 25, 2025, directive ordering Fannie Mae and Freddie Mac to develop formal underwriting guidelines for digital assets. Phase 1 framework proposals covering volatility treatment and documentation standards are currently under FHFA review, with a-to--month timeline before the rollout of Phase 2 criteria.