Network fee

A network fee is what you pay the people who run a blockchain to process your transaction. It does not go to the wallet you are sending to, or to the company you bought through. It goes to the validators or miners who bundle your transfer into a block and confirm it. No fee, no processing.

The fee exists because block space is limited. A Bitcoin block, capped near 1 to 4 megabytes, arrives only about every 10 minutes, so users effectively bid for a spot. Offer a higher fee and you jump the queue. Offer too little and your transaction sits unconfirmed until the network is quiet. The fee is the price of attention from the people securing the chain.

This is why fees swing so much. They rise with congestion. When a popular token launches or markets move hard, demand for block space spikes and fees climb with it. On ethereum, the network fee is called a gas fee, and at peak congestion a routine transfer that normally costs a dollar or two has spiked past $50. On a quiet day the same transfer costs cents. Same action, very different bill.

The amount usually depends on how busy the network is and how much data your transaction carries, not on how much money you are sending. Moving $10 or $10,000 can cost the same fee, because the network charges for space and computation, not value. That detail surprises people the first time they send a small amount and the fee eats a chunk of it.

For someone using an on-ramp, the network fee is separate from any service charge, and it is unavoidable on-chain. You can manage it. Send when the network is calmer, or use a cheaper chain when you have the choice. Once you broadcast a transaction the fee is spent whether or not it confirms quickly, so it pays to check the going rate before you hit send.