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·5 min read·Adam Roozen

Ether.fi and the Neobank Playbook

Ether.fi now ships tokenized stocks, a portfolio loan at around 4%, and a card paying 3% back, to 500,000 users. The description covers saving, spending and borrowing, and never mentions a blockchain.

Ether.fi shipped its Summer release last week. The description covers saving, earning, trading, borrowing and spending in one app, which is what a bank has claimed to be for about a century. It doesn't mention a blockchain.

This company started as a liquid restaking protocol. It pivoted to a neobank in April 2025, and most people filed it under crypto companies doing crypto things.

Here's what's in the release.

The new Aave market on Optimism lets you borrow against your entire portfolio at around 4% and spend it on the card. That's a securities-based line of credit. Private banks have sold that product for decades, at minimums that excluded almost everybody.

The Product Itself

The card pays 3% back on everything. Top-up charges are gone, and higher tiers drop the foreign exchange fee.

Roughly 500,000 users. About 150,000 cards issued.

Deposits and withdrawals run through more than 30 currencies and payment methods, including Apple Pay and Cash App. Through xStocks, eligible users hold tokenized equities and commodities next to their crypto.

The Same Pattern, From the Other Side

I've argued that Aave holds the deposits while Morpho quietly became the credit engine inside Coinbase and Robinhood. Ether.fi is that arrangement from the app side.

Walk the money through it. You deposit into Ether.fi. Your collateral sits in the Aave market on Optimism, where Aave sets the risk parameters, prices the loan and runs the liquidation if your collateral falls. Ether.fi handles the signup, the card, the app, and the support ticket when a payment fails.

So Aave earns a spread on a customer it never acquired, and Ether.fi books lending revenue with no credit underwriter on payroll. What Ether.fi gives up is the risk parameters. Aave governance sets the liquidation thresholds on that market, and Ether.fi's customers get liquidated on Aave's terms.

3% Back and 4% Borrowing

So who pays for 3% back? Interchange on a US card transaction runs somewhere between 0.5% and 2%. An issuer paying out 3% is spending all of that and more on every swipe.

That works because the card is the acquisition channel. The loop runs like this: the card gets you into the app, your assets end up as collateral in the app, and the app earns a spread lending against them. The 3% is an acquisition cost paid once per customer and earned back over years.

Retail banking margins in the US are protected by switching costs and branch networks. Both of those assume the customer has to go somewhere to move money, and a same-day transfer out of a checking account into an app removes that step.

The Margin Loan Underneath

This is a margin loan. Borrow against a portfolio and the position carries a health factor, collateral value over debt, measured against a liquidation threshold. Your collateral drops 30% over a weekend, the health factor crosses the line, and a liquidator repays part of your debt and takes collateral at a discount for doing it. There's no margin call and no window to top up.

Private banks have run securities-based lending for decades, against equities and bonds. The 4% here is priced off collateral the protocol can sell instantly. Liquidity and stability are separate properties, and the rate only reflects the first one.

Wrap-up

Ether.fi has 500,000 users, 150,000 cards, no branches and a few hundred employees. It settles instantly and pays 3% back, on a lending book collateralized by assets it doesn't custody. A bank's regulatory perimeter is worth real money for as long as tokenized equities and stablecoin rails sit outside it, and both of those are moving inside it.

The part I keep coming back to is that Ether.fi never had to build a bank. It built the front end and rented the balance sheet from Aave. Any fintech with a customer base can run that same play, and it gets there a lot faster than the ones underwriting a lending book from scratch.

Written by

Adam Roozen

Strategic Advisor. AI Strategy, Digital Commerce, Technology Transformation

Nearly 30 years of operating experience · Walmart · Sam's Club · Echidna

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