Revoke Token Approvals on Ethereum: A Revocation Now Costs 0.52 Cents

If you have ever swapped a token on a decentralized exchange, deposited one in a lending pool or sent one through a bridge, an approval you forgot about long ago is very probably still live today. It allows a contract that is not yours to move your tokens out. It does not end with the swap, it does not expire after a year, and it does not lapse when the project behind it is abandoned. It ends only when you revoke it yourself. The objection to clearing them up was the same for years: every revocation is a separate transaction, every transaction costs gas, and anyone sitting on twenty old approvals pays twenty times over. That objection no longer holds in this form. We ran the numbers on September 14, 2026, and revoking a single approval on Ethereum mainnet currently costs around half a cent. Token Approval Explained: Why an approve Keeps Running After the Swap A token approval, also called an allowance, is permission granted to an external contract address to take a certain quantity of a token out of your account. This is no flaw in the design. It is the mechanism without which the ERC-20 standard would not work at all. The reason lies in how the standard is built. An ERC-20 token i...