Better Mortgage can reuse the bitcoin that borrowers pledge through its Coinbase-powered home loans, a disclosure that turns the collateral into something closer to an IOU. Customers cannot recover their crypto until the conventional mortgage is fully repaid or refinanced.
The bitcoin-backed mortgage, which Better and Coinbase made generally available last week, lets homebuyers pledge bitcoin instead of selling it to fund a down payment. Borrowers must put up $2.50 of BTC for every $1 borrowed, a 250% collateral ratio. On a $500,000 home, a buyer wanting a $100,000 down payment would pledge $250,000 worth of bitcoin.
How the collateral works
At closing, the bitcoin moves from the borrower’s Coinbase account into Better’s custody account on Coinbase Prime, the institutional-grade brokerage arm of the exchange. Coinbase acts only as the custodian and technology provider. It has no role in extending credit and does not decide when collateral gets liquidated, the companies told CoinDesk.
But Better disclosed that it may reuse the pledged bitcoin, as long as it keeps an equivalent amount available to return. That practice, known as rehypothecation, means the borrower is exposed not just to the price of bitcoin and the property, but to Better’s ability to keep its promise and hand the crypto back years later.
The terms also keep the collateral locked in longer than the crypto loan itself. Better said the bitcoin stays pledged until the conforming mortgage is fully repaid or refinanced, even though the crypto and a second lien on the home secure only the separate down-payment loan. On a 30-year mortgage, that could mean the bitcoin sits encumbered for decades unless the borrower refinances or sells.
No margin calls, limited protection
The product has one feature that separates it from most crypto lending: no margin calls. If bitcoin drops in value, the loan terms stay the same and no additional collateral is required. Market movements alone never trigger liquidation. The pledged crypto is only at risk if the borrower misses payments for 60 days, the same threshold that applies to a standard conforming mortgage.
If the borrower does default, Better said it must pursue the bitcoin first, though standard lending remedies may still apply if selling the collateral leaves a shortfall. In a foreclosure, sale proceeds first repay the conforming mortgage, then the crypto-backed down-payment loan. Anything left goes to the borrower.
“The Bitcoin loan only solves the cash-for-down-payment problem,” Better’s documentation states, a point the company repeats to manage expectations. The pledged bitcoin does not help a buyer qualify for the first mortgage. Income and credit underwriting still apply.
Why the structure matters
Better and Coinbase launched the first Fannie Mae-backed token-backed mortgage in June 2026, and the product ran in early access before last week’s general availability. The design has been marketed as a way for holders to buy homes without selling their coins, which avoids a taxable event and keeps their market exposure intact.
The rehypothecation detail complicates that pitch. Traditional securities-backed loans from private banks usually keep client collateral segregated. Here, Better may deploy the pledged bitcoin elsewhere while promising to return an equivalent amount later, which leaves borrowers depending on the company’s solvency. If Better fails, the borrower’s claim on their own coins sits in the bankruptcy queue like any unsecured creditor’s.
| Term | Detail |
|---|---|
| Collateral ratio | 250% ($2.50 BTC per $1 borrowed) |
| Margin calls | None, terms fixed at origination |
| Liquidation trigger | 60-day payment delinquency |
| Custody | Better’s account on Coinbase Prime |
| Recovery | After the conforming mortgage is repaid or refinanced |
Only bitcoin is accepted for now, though Better has said ethereum, solana and tokenized assets could be added later. USDC can also be pledged at a lower 1.25-to-1 ratio, and pledged USDC earns rewards that offset mortgage payments.
The product signals how far bitcoin has moved into conventional finance: a Fannie Mae-eligible mortgage now runs on top of it. It also shows the trade-offs that come with that integration. Borrowers who read only the marketing will miss the fine print that their coins may be lent out and locked up for the life of the loan.
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