Updated August 2026 ยท Figures from the official documentation and live explorer data
Short answer: almost nothing, and you pay it in dollars. Stable charges a flat base fee of 1 gwei, denominated in USDT0. A simple transfer costs around 0.0000021 USDT0, which is about two ten-thousandths of a cent.
| Operation | Gas used | Approximate cost |
|---|---|---|
| USDT0 transfer | 21,000 | 0.0000021 USDT0 |
| Token swap on a DEX | 150,000 to 250,000 | 0.00015 to 0.00025 USDT0 |
The transfer figure comes straight from the official gas pricing documentation, which states that complex contract interactions stay well under one cent. The swap range is our own estimate based on the documented 1 gwei model and typical swap gas usage, so treat it as an order of magnitude rather than a quote.
You can check the live gas price yourself on Stablescan. At the time of writing it sits at 1.006 gwei, essentially at the floor, which means the network is not congested.
Most chains run a fee auction: when the network is busy, users outbid each other with priority tips and costs spike. Stable does not do that. It uses a single component fee model with the base fee alone, and it deliberately ignores priority tips. The consequence is that costs are predictable, which matters a lot for a chain designed around payments.
maxPriorityFeePerGas to be explicitly set to 0. Wallets handle this for you. Custom scripts and tools ported from Ethereum often do not, and the result is failed transactions that look mysterious. If you write code against Stable, set it to zero.This is where a lot of articles get sloppy, so here is the honest version.
Stable has a Gas Waiver Protocol. Addresses approved by validator governance can wrap a user's signed transaction and execute it at a gas price of zero. Each waiver is restricted to specific target contracts and specific method signatures, so it is not a blank cheque. The intended use is onboarding: letting a brand new user do something before they hold any funds. It is not a general free transaction system for everyone, unlike what some competing chains advertise.
The one clearly free thing for ordinary users: transfers between StablePay users, in Stable's official non custodial wallet.
Stable also supports EIP-7702 account abstraction and ERC-3009 signature based settlement, which lets applications sponsor their users' fees if they choose to. Whether a given app does that is up to the app.
For a trader, gas on Stable is effectively free. You will never abandon a trade because fees are too high, and you will never be stuck holding a volatile token just to be able to move. That, more than the marketing, is why active traders have gravitated to the chain. The practical costs you should actually care about are the bridge fee to get funds in and the fee charged by whatever tool you trade through.