> For the complete documentation index, see [llms.txt](https://docs.permission.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.permission.ai/gas-fees.md).

# Gas Fees

**What Are Gas Fees?**

Gas fees are small transaction costs paid to the blockchain network every time you perform an on-chain action — such as sending ASK from your wallet or redeeming ASK for rewards.

Think of gas fees like a postage stamp. You're not paying Permission — you're paying the network to process and record your transaction. Without enough gas in your wallet, transactions simply won't go through.

Gas fees are always paid in the **native token of the network you're transacting on** — not in ASK.

**Which Token Do I Need?**

ASK is a multi-chain token. The gas token you need depends on which network you're using:

| Network | Gas Token | Where to Get It                      |
| ------- | --------- | ------------------------------------ |
| Polygon | **POL**   | Coinbase, Binance, Kraken, Uniswap   |
| Base    | **ETH**   | Coinbase, Binance, Kraken, Aerodrome |

> Permission operates across multiple chains and may expand to additional networks in the future. Always confirm which network your wallet is connected to before transacting.

***

**How Much Do I Need?**

Gas fees on both Polygon and Base are very low — typically a fraction of a cent per transaction. A small amount goes a long way. For most users, $1–$2 worth of the relevant gas token is sufficient to cover numerous transactions.

***

**How to Add Gas to Your Permission Wallet**

**Step 1 — Get your Permission wallet address:** Log in to your Permission account and navigate to **Wallet**. Copy your wallet address.

**Step 2 — Acquire the gas token:** Purchase POL or ETH on any major exchange (Coinbase, Binance, Kraken, Gemini) or decentralized exchange (Uniswap, Aerodrome, etc.).

**Step 3 — Send the gas token to your Permission wallet address:** From your external wallet (e.g. MetaMask, Coinbase Wallet):

1. Make sure you are connected to the correct network (Polygon for POL, Base for ETH)
2. Select **Send**
3. Paste your Permission wallet address
4. Enter a small amount (e.g. $1–$2 worth)
5. Review and confirm the transaction

Once confirmed, your gas balance will appear in your Permission wallet and you'll be able to send ASK and process redemptions.

***

**Important Reminders**

* **Always confirm you are on the correct network** before sending — sending POL on the Base network or ETH on Polygon will result in failed or lost transactions
* **Double-check your wallet address** before confirming any transaction — blockchain transactions are irreversible
* Start with a small test amount if you are new to on-chain transactions

> ⚠️ Permission is not responsible for assets lost due to incorrect network selection, wrong wallet addresses, or user error. See our [Terms of Use](https://www.permission.ai/terms-of-use) for more.

***

**Need Help?**

Contact <support@permission.ai> and our team will be happy to assist.


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