Coinbase Adds Fixed-Rate Bitcoin Loans—But the Maturity Date Changes the Risk

Coinbase has added fixed-rate Bitcoin-backed loans to its borrowing menu, giving eligible U.S. customers a way to know both their interest rate and repayment date before they take out the loan.

That predictability is the appeal. The catch is that “fixed” describes the borrowing terms, not the value of the Bitcoin posted as collateral—and the maturity date creates a hard deadline that borrowers cannot ignore.

CryptoSlate reports that customers can borrow USDC against Bitcoin through Morpho Midnight on Base, with the rate and maturity fixed when the position opens. Its analysis highlights the central tradeoff: predictable interest removes one moving part, yet an unpaid loan can expose even healthy collateral once the maturity deadline arrives.

The product sits beside Coinbase’s variable-rate borrowing option, giving customers a choice between a floating cost with open-ended timing and a fixed cost tied to a specific repayment date. That date is not a suggestion; it determines when the debt must be cleared to keep the lender from claiming the pledged Bitcoin.

Coinbase handles the customer experience while Morpho supplies the lending protocol and Base settles the transaction. The arrangement brings an onchain fixed-term credit market into a retail app, where the familiar interface can make the product feel simpler than the collateral mechanics underneath it.

Keep your Bitcoin, get liquidity.

With fixed-rate loans backed by Bitcoin you can lock in your rate and repayment dates before you borrow.

Built by @Morpho Midnight on @Base. pic.twitter.com/1oEf6L5Efd

— Coinbase 🛡️ (@coinbase) September 22, 2026

The Block reports that Coinbase currently offers maturities at the end of the current month or the following month, with “end of month” defined as the final Friday. Rates are formed through an onchain order book where lenders and borrowers place offers; Coinbase has not publicly disclosed a standard rate.

That structure removes one familiar DeFi headache because the borrowing cost no longer changes every block. The collateral still tracks Bitcoin’s market price, so a sharp BTC decline can shrink the loan’s safety margin while the interest rate stays put.

The borrower has to repay the USDC debt by the deadline. If the loan goes unpaid, the lender can assert a claim against the Bitcoin collateral.

A position that looks comfortably overcollateralized today can become much less forgiving if Bitcoin drops, liquidity tightens, or the borrower fails to arrange repayment on time.

The fixed-rate option arrives beside a variable-rate lending business that already has more than $1.4 billion in outstanding loans backed by roughly $3 billion in collateral, according to the company figures cited by The Block. Morpho provides the credit infrastructure, Base settles the transactions, and Coinbase controls the customer-facing experience.

Crypto.news notes that customers’ Bitcoin is represented as cbBTC when it enters the Morpho smart-contract system. Morpho Midnight is still much smaller than Morpho’s variable-rate markets, but Coinbase gives the fixed-term product access to a mainstream retail distribution channel that most DeFi protocols do not have.

Learn more about @Coinbase Fixed Rate Crypto-backed Loans.

Available in the US, excluding NY. https://t.co/I8dAgym0nq

— Morpho 🦋 (@Morpho) September 22, 2026

For Bitcoin holders, the practical attraction is straightforward: they can access dollar liquidity without selling the asset and potentially triggering a taxable disposal. Fixed terms also make the cost easier to compare with other borrowing choices.

This remains leverage secured by a volatile asset. Borrowers need to understand the loan-to-value threshold, exact maturity, consequences of a missed payment, and how quickly they can add collateral or repay during a sharp market move.

The interest rate may be locked. The risk is not.

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