When you pay your ONCHAIN® Ramp subscription, your transaction happens on-chain—which means network (gas) fees will apply just like any other on-chain transaction.
These gas fees vary depending on the chain you’re paying from, and they can change quickly based on network activity. Because of this, the final cost at the time of renewal may be slightly higher than the base subscription price.
Why this matters
Your subscription is considered paid only once the full amount—including gas—is successfully processed. If your wallet holds just enough to cover the subscription price alone, and gas fees spike at the time of renewal, your payment may fail.
To avoid any interruptions, we strongly recommend keeping a small buffer of extra funds in your wallet to cover gas.
What to expect by chain
Gas fees are not the same across networks. Here’s a quick reference on what to expect based on the chain you selected at signup, and how much extra to consider leaving in your wallet to ensure smooth processing:
Supported Chain | Gas Coin | Volatility | Suggested Buffer | Gas Tracker |
Ethereum | ETH | High | ~$50 | |
Base | ETH (Base) | Low | ~$2 | |
Polygon | POL | Low | ~$1 |