When a validator is done validating the Primary Network it receives back the AVAX tokens it staked. Additionally, it may receive a reward for helping to secure the network by validating. Currently, the staking APY is roughly 9% and a minimum delegation fee of 2% from users who delegated AVAX to the validator.
A validator only receives a validation reward if it is sufficiently responsive and correct during the time it validates. A validator must maintain at least an 80% uptime to receive rewards.
To have a validating node, the node must have a minimum of 2000 AVAX staked.
To learn more about Validators on Avalanche®, please read the following article.
See the Avalanche token paper to learn more about AVAX and the mechanics of staking.