How Bitcoin fees work — and why they matter for your business

When you swipe a credit card at a business, someone pays a fee. That someone is the merchant — you. Visa, Mastercard, the issuing bank, and the payment processor all take their slice before the money reaches your account. It's baked into every transaction so quietly that most customers never think about it.

Crypto works differently. There are still fees — but they're paid by the sender, they go to the network rather than to a company, and for most transactions they're a tiny fraction of what card networks charge.

Here's how it all works.

What are network fees?

Every Bitcoin transaction needs to be validated by the network and included in a block on the blockchain. The people doing that work — miners on Bitcoin, validators on Ethereum and Solana — are compensated with a small fee attached to each transaction.

This fee isn't set by a company. It's determined by supply and demand. When the network is quiet, fees are low. When the network is congested — lots of people trying to transact at the same time — fees rise as users compete to get their transactions included in the next block.

The critical point for merchants: the sender pays the network fee, not the recipient. When a customer pays you in Bitcoin, they pay the fee. You receive the full payment amount.

Bitcoin fees — the mempool explained

Bitcoin transactions wait in a queue called the mempool (memory pool) before being included in a block. Miners pick transactions from the mempool, and they prioritize the ones offering higher fees. If you're in a hurry, you pay more. If you're patient, you pay less.

Bitcoin fees are measured in satoshis per virtual byte (sat/vbyte). A satoshi is one hundred-millionth of a Bitcoin — the smallest unit. A typical Bitcoin transaction is around 250 virtual bytes. At 10 sat/vbyte (a calm network), that's 2,500 satoshis — roughly $1–2 at current prices. During peak congestion, fees have spiked to $50 or more per transaction.

For point-of-sale payments, this is worth knowing: Bitcoin fees are flat, not percentage-based. Sending $10 or $10,000 costs the same network fee. This makes Bitcoin dramatically more efficient for larger transactions and less efficient for very small ones.

Ethereum gas — a different model

Ethereum uses a fee system called gas. Every operation on the Ethereum network — sending ETH, transferring a token, interacting with a smart contract — consumes a certain amount of gas. You pay for that gas in ETH.

Gas prices are measured in gwei (one billionth of an ETH). During calm periods, a simple ETH transfer might cost 21,000 gas at 10 gwei — about $0.50–2.00. During periods of high demand (NFT launches, DeFi events), gas fees have reached hundreds of dollars per transaction.

USDC and USDT on Ethereum are ERC-20 tokens. Transferring them requires more gas than a simple ETH transfer — typically 65,000 gas or more — which means stablecoin transfers on Ethereum can be unexpectedly expensive during busy periods. This is why many merchants and customers prefer USDC on other networks (like Solana) where fees are near-zero.

The low-fee coins — built for speed and scale

These four coins were designed specifically with low fees and fast confirmation in mind. For everyday point-of-sale transactions, the sender's fee is so small it's essentially invisible. XRP and Solana in particular settle in under five seconds at fractions of a cent.

The fee picture — Bitcoin and Lightning

Coin	Typical fee (sender pays)	Confirmation time	Fee level
Lightning (BTC)	Negligible — a few sats	Instant	Near zero
Bitcoin (BTC)	$0.50–$5 (flat, varies with congestion)	10–60 min	Variable

How this compares to credit cards

The difference is not subtle. Card networks charge a percentage of every sale — which means the fee scales with your revenue. Crypto network fees are flat and paid by the sender, which means you receive 100% of every Bitcoin payment.

What this means in real money

$3,000 a year is a part-time employee. It's a new piece of equipment. It's the ingredient cost increase that didn't squeeze your margins this quarter. The numbers are real, and they compound.

One important nuance — conversion fees

If you accept Bitcoin and immediately convert it to dollars using an exchange, the exchange will charge a conversion fee — typically 0.5–1.5% depending on the platform. If you're converting everything immediately, factor that in.

If you hold the Bitcoin rather than converting, there's no conversion fee. Whether holding makes sense for your business is a separate question — one covered in our article on accepting volatile assets.

For stablecoins like USDC, which are already pegged to the dollar, conversion is simpler and fees are often lower — since the price risk is absent.