# Solana and other SVM Fees

The total transaction fee on Solana and other SVM chains is calculated by combining two main parts:

1. **Base Fee:** This is a fixed amount paid per signature required in your transaction. Currently, it's set at a very low rate (around $0.000005) and doesn't change based on transaction complexity.
2. **Priority Fee (Priority Budget):** This fee is used to speed up your transaction processing. It's not mandatory, but can be helpful during network congestion.


**Calculating the Fees:**

- The base fee is simply the number of signatures in your transaction multiplied by the current `lamports_per_signature` rate.
- The priority fee is calculated by multiplying the compute unit limit you set by the compute unit price you specified (measured in lamports).