Coinbase Fixed-Rate Bitcoin Loans Arrive via Morpho Midnight

Bitcoin-backed borrowing on Coinbase just got more predictable. On September 22, 2026, Morpho announced that Coinbase has launched fixed-rate USDC loans backed by bitcoin, powered by Morpho Midnight. Borrowers lock in their interest rate and repayment date at the start, instead of watching a variable rate move every block. It is the first enterprise-scale deployment of Midnight, the fixed-rate lending protocol Morpho introduced on Base earlier this year.

• What it is: fixed-rate USDC loans against BTC collateral in the Coinbase app
• Infrastructure: Coinbase runs the app experience, Morpho supplies the lending protocol and Base handles settlement
• Scale so far: Coinbase's existing variable-rate Morpho loans total more than $1.4B, backed by about $3B in collateral
• Next up: Midnight is designed to support tokenized stocks and other real-world assets later

How Do Fixed-Rate Bitcoin Loans on Coinbase Work?

The core idea is simple: borrow USDC against your bitcoin without selling it, and know the full cost up front. Rates are not set by a formula tied to pool utilization, as in most DeFi lending. Instead, Midnight works like an onchain order book, where lenders and borrowers post offers and a market rate emerges from matching them.

Decrypt reports that loans have defined maturities, due at the end of the current month or the following month, with the last Friday serving as the end-of-month date. If a loan is not repaid, the lender has a claim on the collateral, which is the standard trade-off for any secured loan.

Fixed vs Variable Rates: Why Certainty Matters

Variable-rate DeFi loans are flexible, but they carry a real planning problem: a borrower who takes out a loan at 5% can find the rate much higher a few weeks later if demand for USDC spikes. That uncertainty is one reason traditional finance leans so heavily on fixed-rate credit.

A fixed rate turns a crypto-backed loan into something closer to a familiar financial product. Someone who needs cash for a known expense can calculate the exact cost before borrowing. That is a meaningful step for making onchain credit usable by people who are not trading full time.

How This Builds on Coinbase's Morpho Partnership

The new product sits alongside Coinbase's existing variable-rate loans, not in place of them. That variable-rate business has already grown past $1.4B in active loans, as covered in our look at Coinbase's crypto-backed USDC loans via Morpho. Morpho has been expanding in other directions too, including Zama's confidential Morpho vaults.

What Comes Next for Morpho Midnight?

Morpho says Midnight was built to handle a broader range of collateral over time, including tokenized stocks and other real-world assets. If that happens, the same fixed-rate order book could support loans against tokenized equities or bonds. No timeline has been given, but the direction is clear. For more on DeFi and onchain finance, see our crypto coverage. As always, borrowing against volatile assets carries risk, and this article is not financial advice.

Sources: Morpho — September 22, 2026; Decrypt — September 23, 2026; The Block — September 22, 2026.