What Are Gas Fees and How to Avoid Them?

If you've ever tried to send crypto, you've probably encountered gas fees.

You may have enough ETH, USDT, or another cryptocurrency to make a transfer, only to discover that you also need to pay a separate network fee. Sometimes that fee can even feel surprisingly high compared to the amount you're trying to send.

So, what are gas fees, why do you have to pay them, and can you avoid them?

The good news is that you don't always have to worry about calculating gas or keeping a separate token in your wallet. Some apps, including Kite, can handle gas behind the scenes and let users make gasless transfers.

What is a gas fee?

Gas fees are transaction fees paid to a blockchain network to process and confirm a transaction.

Whenever you send crypto, swap tokens, or interact with a smart contract, the blockchain needs computers called validators or miners to process the transaction.

Gas fees compensate the network for providing that computational work.

Think of gas as the cost of using a blockchain.

For example, if you're sending ETH on Ethereum, the transaction requires computational resources. The network charges a fee for processing it.

Gas fees are separate from the amount you're sending.

If you send $100 worth of crypto, for example, you may need to pay a network fee on top of that $100.

A gas fee isn't a charge from your wallet app. It goes to the network itself, which is why the amount changes minute to minute and why no app can simply switch it off for you. What Kite does is pay the fee on your behalf

Also Read: What Is a Stablecoin? A Plain-English Guide

Why Are They Called "Gas" Fees?

The term comes from Ethereum.

On Ethereum, different operations require different amounts of computational work. The amount of computational effort required is measured in gas.

The more complicated an operation is, the more gas it can require.

Your final transaction fee depends on factors including:

Gas used × gas price = transaction fee

You don't need to calculate this manually when using most modern wallets. Your wallet usually estimates the fee for you.

However, understanding the concept helps explain why some crypto transactions cost more than others.

How do gas fees work?

Every action on a blockchain costs a set amount of computational work. Sending a token is cheap work. Swapping one token for another is heavier. Deploying a contract is heavier still.

That work is measured in units of gas. You then pay a price per unit, quoted in gwei, which is a very small slice of the network's token. One gwei is a billionth of an ETH.

Since Ethereum's London upgrade in August 2021, that price has had two parts. A base fee, set automatically by how full recent blocks were and destroyed rather than paid to anyone, and a priority fee you add on top to get processed sooner.

So, essentially, your fee is the amount of work multiplied by the going rate for that work. The work is fixed by what you're doing. The rate moves with how busy the network is, which is why the same transfer can cost different amounts an hour apart.

One detail catches people out. If a transaction fails, you still pay. The network did the work of attempting it, so the fee is taken even though nothing moved.

Why you need a second token just to send money

Here's the part that makes no sense until someone explains it.

Gas has to be paid in the network's own token. Not in the money you're sending. If you hold USDT on Ethereum and want to send it, the fee comes out in ETH, and if your ETH balance is zero then your USDT isn't going anywhere.

You have money. The network won't accept your money. It wants different money.

Now multiply that. Each network runs on its own token, so keeping yourself unstuck means holding several of them at once and remembering to top each one up.

Gas fees are cheap now, and still a problem

The numbers have collapsed. According to growthepie's fee tracking, median transaction costs on 10 September 2026 looked like this.

The Dencun upgrade of 13 March 2024 introduced EIP-4844, which gave rollups a dedicated, temporary data lane called blobs instead of making them post everything to Ethereum as permanent calldata. The Pectra upgrade in May 2025 then doubled the blob target per block from three to six and raised the maximum from six to nine, giving rollups more room before prices climb again.

What Are Gasless Transfers?

A gasless transfer is a crypto transaction where the user doesn't have to pay the blockchain's transaction fee directly from their wallet.

The fee still exists.

The blockchain still needs to be compensated for processing the transaction.

The difference is that the application or another mechanism handles the gas payment on the user's behalf.

From the user's perspective, the experience can be much simpler.

Instead of:

Buy crypto → buy gas token → keep enough gas → make transfer

you can potentially:

Choose what you want to send → confirm → transfer

This removes one of the most confusing parts of using crypto.

How to avoid gas fees entirely

On Kite, transfers are gasless. We cover the network fee on sends, so what you send is exactly what the recipient receives, and you don't need ETH, BNB or POL sitting in your wallet to move USDC or USDT. After a certain number of transfers a small platform fee may apply, and we show it before you confirm.

Also Read: How to Spend USDC in Everyday Life

Conclusion

You can sometimes reduce fees by choosing a lower-cost network or transacting when network demand is lower. But the simplest solution is to use Kite because we abstract gas away from you.

With Kite's gasless transfers, supported transactions can be completed without requiring you to separately hold a blockchain's native token for gas.

The result is a simpler crypto experience where you can focus on sending your money, rather than figuring out how the blockchain gets paid.

Frequently asked questions

Why do gas fees change so much?

Gas prices are set by demand for block space. When lots of people transact at once, the base fee rises automatically, and it falls just as quickly when activity drops. A popular mint or a volatile market hour can move fees several times over within minutes.

Can gas fees ever be zero?

Not from the network's point of view. Someone always pays the validators processing the transaction. What can change is who pays. With gasless transfers the fee is sponsored on your behalf rather than deducted from your balance.

What is gwei?

Gwei is the unit gas prices are quoted in. One gwei is one billionth of an ETH, so a 0.05 gwei gas price means each unit of gas costs 0.00000000005 ETH. A simple token transfer uses tens of thousands of gas units.

Do I pay gas when receiving crypto?

No. The sender pays the network fee, so incoming transfers cost you nothing. This is why you can receive stablecoins into a brand new wallet with a zero balance, even though you couldn't send them back out from it.

Why did my transaction fail and still cost money?

The network performed work attempting your transaction before it reverted, and that work is what the fee pays for. Failures usually come from too little gas being supplied, a slippage limit being exceeded, or a contract rejecting the call.

Is Polygon cheaper than Ethereum even though its gas price is higher?

Yes. The gwei figure is denominated in each chain's own token, and POL is worth far less than ETH, so a much higher gwei number still produces a much smaller bill. Always compare the cost in dollars rather than in gwei.

What are blobs?

Blobs are a data format introduced by EIP-4844 in March 2024 that lets rollups post their data to Ethereum temporarily rather than permanently. Because that space is priced separately and expires, it's dramatically cheaper, and it's the main reason layer 2 fees dropped to fractions of a cent.