Solflare Launches Earn, In-Wallet USDC Yield Powered by Kamino

Solflare launched Earn on 26 October 2026, a feature that lets users of the Solana wallet supply USDC to Kamino Finance KMNO$0.043-1.2%'s lending market without leaving the app. Solflare's announcement thread says Earn is live on mobile, web and the browser extension, that Solflare takes no fee, and that the rate is variable. Kamino confirmed the integration three minutes later.

How Solflare Earn works with Kamino's USDC lending market

Solflare Earn moves a user's USDC into Kamino's smart contracts, where it is lent to borrowers on Kamino. The interest those borrowers pay is the yield. Solflare's own pitch is convenience: until now, it said, earning on USDC "often meant leaving Solflare and connecting your wallet to another app". Earn puts the deposit, the running balance and the withdrawal inside the wallet.

Kamino described the flow the same way. Users "can deposit USDC, track their earnings, and withdraw subject to available liquidity, all within their Solflare wallet," and the yield "is generated from interest paid by borrowers on Kamino", with rates that move with market conditions.

Solflare stresses that Earn is non-custodial. "Your USDC moves into Kamino's contracts, and only you can withdraw it," the wallet said. Solflare calls Kamino "selected and reviewed by Solflare", but neither company has said which of Kamino's markets the deposits go to.

Solflare Earn fees, rate and UK availability

Solflare says it charges nothing on top of Kamino's rate. "The rate you see is the rate you get. No Solflare or management fee," the company posted. The rate is live and set by supply and demand in the lending market, so it rises when borrowers want more USDC and falls when deposits outpace them.

Solflare put Kamino's past rate at around 3.5-5.5% and warned that it can change, so the range describes history and guarantees nothing about future returns. The wallet shows a yearly estimate based on the live rate before you deposit.

Solflare also said that "this is not intended for the UK market" and gave no other regional limits in the thread.

Withdrawal liquidity and smart-contract risk on Kamino

There are no lockups, and Solflare says withdrawals are usually instant but "may take a little longer when the market is busy." That caveat follows from how lending markets work. Deposited USDC is lent out, so when most of a pool is borrowed, a withdrawal can have to wait for repayments or fresh deposits. Kamino's wording, "subject to available liquidity", says the same thing.

The funds also sit in Kamino's contracts, outside Solflare and outside any bank. A bug or failure in those contracts is the depositor's risk, and there is no deposit insurance. The in-wallet screen is simpler than visiting a DeFi app, but the money ends up in the same lending protocol.

Wallet-embedded USDC yield on Solana: Solflare, Seed Vault and Kamino

Solflare is not the first Solana wallet to route USDC into Kamino. On 19 August 2026, Solana Mobile launched a USDC Earn Vault in Seed Vault Wallet that lends through Kamino's SOL/BTC Market USDC pool. That vault charges a 0.25% annual platform fee, keeps 5% of deposits in reserve to fund withdrawals, and is unavailable to residents of the US, UK and Canada. Solflare's version drops the wallet fee and names only the UK as excluded, though it publishes less about where the money is lent.

Earn also extends a relationship Solflare already has with Kamino. The wallet's Cards Borrow feature, which lets users borrow USDC against SOL, was backed by Kamino in Solflare's June 2026 update. Solflare has since added USDC merchant cashback and in-wallet perpetuals through Phoenix, so Earn fits a pattern of pulling DeFi products into the wallet itself.

For Kamino, each wallet integration is a deposit channel that reaches USDC holders inside an app they already use, without asking them to find and connect to Kamino's own interface. Kamino's lending program already has a steady base of activity: Solana Compass counted between about 1,500 and 2,500 wallets signing transactions on Kamino Lend's mainnet program each day from 26 September to 25 October 2026. The count is of signing wallets, and one person can run several.

With Seed Vault Wallet and now Solflare both pointing USDC deposits at Kamino, the wallets are differentiating on what sits around the same lender: fees, regional limits and how much they disclose.