Ether.fi Migrates Cash Product to OP Mainnet in Long-Term Optimism Enterprise Partnership

TLDR:

• Ether.fi Cash processes 28,000 daily spend transactions averaging $2 million in volume, doubling every two months. 
• The migration covers 70,000 active cards, 300,000 accounts, and millions in user TVL moving to OP Mainnet. 
• OP Stack processed 3.6 billion transactions in H2 2025, accounting for 13% of all global crypto transactions. 
• ether.fi users will access OP token rewards, 3%+ cashback, travel perks, and free metal cards post-migration.

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Ether.fi is migrating its flagship Cash product to Optimism’s OP Mainnet. The move covers roughly 70,000 active cards and 300,000 accounts.

Millions in user TVL will also transfer to the new network. The migration is part of a long-term OP Enterprise partnership.

Together, the teams aim to accelerate on-chain global payments. This positions OP Mainnet as a leading destination for payment activity in the broader crypto ecosystem.

Ether.fi Cash Brings Scale and Speed to OP Mainnet

Ether.fi Cash is a non-custodial digital banking product combining a credit card with a savings account. It runs DeFi protocols under the hood to generate yield for users.

The product allows movement between fiat and crypto while offering cashback and global spending. Users manage their assets without giving up custody.

Since launching last year, the product has grown quickly. Each day, the app processes 2,000 internal swaps and 28,000 spend transactions.

Daily spend volume averages around $2 million. These numbers have roughly doubled every two months since launch.

The migration to OP Mainnet will expand liquidity access for users making swaps. They will also gain access to more assets for deposits and withdrawals.

Gas fees and network costs for card transactions will be covered by ether.fi. More cashback rewards are also planned as part of the move.

For end users, the transition is designed to be seamless. Optimism has managed major ecosystem migrations before and has a structured process in place. Users should not experience disruption during the switch to the new network.

What the OP Enterprise Partnership Means for Ether.fi

As an OP Enterprise customer, Ether.fi gains access to several infrastructure benefits. These include established liquidity, a dedicated account manager, and priority access to new features. The same codebase works across all OP Stack chains, which reduces development overhead.

The OP Stack processed 3.6 billion transactions in the second half of 2025. That represented 13 percent of all crypto transactions during that period. OP Mainnet serves as a hub for DeFi activity and a launchpad for consumer apps.

As part of the integration, ether.fi users will receive access to OP token rewards. Ongoing reward programs include 3% or more cashback, in-app campaigns, travel discounts, and free metal cards. Membership tiers and lounge access are also part of the package.

ether.fi sees blockchain infrastructure as a way to expand globally at a lower cost than traditional fintech. Operating non-custodially allows the platform to scale without the overhead traditional banks carry.

The partnership with Optimism supports that model with enterprise-grade tools and network depth.

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