# # Transactions fee

In Zarb, the transaction fee is calculated based on the transferee amount. The formula is quite simple.

$fee = value \times percentage \\ \quad \\ fee = \begin{cases} fee & \\ fee_{min} & \quad if \quad fee < fee_{min} \end{cases}$

$percentage$ and $fee_{min}$ are part of consensus parameters.

For example, if Alice is going to send 20,000 to Bob, she should pay 20 coins as a fee for her transaction.

Note: The fee for Mintbase and sortition transactions are zero.