The transaction will end when the information about it is included in the next block. This is done by the miners. Members of the network generating new blocks, in addition to the fixed payment, receive the amount contributed by users. The amount is subject to change. The Bitcoin Network’s current fee is now 0.000057 BTC or $3.26 (as of October 2021). This is an average value per transaction. In practice, the amount can vary: the higher the fee per transaction, the more likely it is to be included in the next block. It is possible to choose the remuneration parameters for miners based on urgency.
The essence of fees in the Bitcoin network comes down to paying miners. They spend resources to buy productive equipment, electricity to add the next block to the network’s distributed registry. Therefore, the minimum bitcoin transfer fee is influenced by costs. They vary depending on the country, the price of electricity, and the complexity. Sometimes a transaction can stay in a mempool (on hold) for a long time.