ether.fi is Migrating to Optimism’s OP Mainnet

Onchain neobanking comes to Optimism’s flagship chain

ether.fi plans to migrate ether.fi Cash, its digital cash account and card product, to OP Mainnet. Over the coming months, ~70,000 active cards, ~300,000 accounts, and millions in user TVL are moving to Optimism. 

This migration brings one of the fastest-growing crypto products to Optimism with a long-term OP Enterprise partnership aligned around accelerating global payments. For Optimism, this positions OP Mainnet as a leading chain for payments activity.

By deploying on OP Mainnet as an OP Enterprise customer, ether.fi gains access to: 

• Established liquidity and users from day one

• Enterprise-grade support on a proven public network 

• A dedicated account manager for technical guidance

• The same codebase and tooling across all OP Stack chains

• Priority access to new features and upgrades 

ether.fi Cash offers a credit card and a savings account that uses DeFi under the hood. Users can move from fiat to crypto, earn yield, spend globally, receive cash back, and manage assets in a non-custodial wallet. It combines the utility of a neobank with the benefits of DeFi.

Launched last year, ether.fi Cash has quickly become a market leader, surpassing products from incumbents that have been in the market for years. Each day, the ether.fi app processes 2,000 internal swaps and 28,000 spend transactions averaging $2 million spend volume. These numbers have doubled approximately every two months since launch.

ether.fi’s Ethereum Journey 

Back in 2024, ether.fi began building ether.fi Cash. As they scaled, it became clear ether.fi needed a long-term infrastructure partner deeply aligned with Ethereum and capable of supporting payments at global scale. Optimism is that partner. 

Here’s what this migration unlocks for ether.fi users:

• Increased liquidity for swaps within a larger DeFi ecosystem

• Access to more assets for deposits and withdrawals

• Card transactions with gas fees and network costs covered by ether.fi

• More cashback rewards for users

• Stronger infrastructure designed to support high transaction volume

For end users, the transition will be seamless. Optimism has supported major ecosystem migrations in the past, and provides a secure and robust process designed to avoid disruption.

In the second half of 2025, the OP Stack processed 3.6 billion transactions, representing 13 percent of all crypto transactions during that period. OP Mainnet serves as a hub for DeFi activity and a launchpad for both consumer and enterprise applications. Teams can deploy quickly, scale efficiently, and benefit from shared infrastructure and distribution across the broader Superchain ecosystem.

ether.fi represents the next wave of onchain neobanking. By operating non-custodially on blockchain infrastructure, ether.fi can expand globally, operate more efficiently than traditional fintech incumbents, and offer better products at lower cost. 

As part of the product integration, ether.fi users will be able to access OP token rewards. ether.fi’s ongoing rewards programs include 3%+ cashback, in-app reward campaigns, travel discounts & rewards, membership tiers, travel lounges, free metal cards, and more. 

For developers building payments, lending, or consumer-facing applications, OP Mainnet offers the infrastructure, liquidity, and ecosystem to go from concept to production-scale. 

Learn more about OP Enterprise here.