#CryptoFees101 Crypto transaction fees are influenced by several factors, depending on the blockchain network and transaction type. Here’s a breakdown of the key elements that determine these fees:

- **Transaction Size**: Larger transactions require more computational work, leading to higher fees[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://ironwallet.io/news/what-are-cryptocurrency-network-fees/?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "1").

- **Network Congestion**: When a blockchain is busy, fees increase as users compete to have their transactions processed faster—similar to surge pricing[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://ironwallet.io/news/what-are-cryptocurrency-network-fees/?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "1").

- **Fee Models**: Some blockchains, like Ethereum, use **gas fees**, which measure the computational effort required for a transaction[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://ironwallet.io/news/what-are-cryptocurrency-network-fees/?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "1").

- **Transaction Complexity**: More complex transactions, such as those involving smart contracts, often require higher fees[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://swissmoney.com/cryptocurrency-transaction-fees?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "2").

- **Blockchain Capacity**: Each block has limited space, meaning transactions with higher fees are prioritized[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://swissmoney.com/cryptocurrency-transaction-fees?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "2").

- **Exchange Fees**: If using a crypto exchange, additional fees may apply for trading, withdrawals, and deposits[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://www.bitgo.com/resources/blog/crypto-transaction-fees-explained/?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "3").