# How to calculate rewards APY on Avalanche and Optimism Markets

**URL:** <https://governance.aave.com/t/how-to-calculate-rewards-apy-on-avalanche-and-optimism-markets/10527>\
**Category:** General\
**Created:** [November 2, 2022, 12:05am UTC](https://governance.aave.com/t/how-to-calculate-rewards-apy-on-avalanche-and-optimism-markets/10527 "2022-11-02T00:05:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gurjotd23](https://avatars.discourse-cdn.com/v4/letter/g/e36b37/32.png) [@gurjotd23](https://governance.aave.com/u/gurjotd23)\
**Post date:** [November 2, 2022, 12:05am UTC](https://governance.aave.com/t/how-to-calculate-rewards-apy-on-avalanche-and-optimism-markets/10527/1 "2022-11-02T00:05:00Z")

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I am doing a research project to study the historical APY for suppliers on Aave. I have been able to calculate historical supply APY from log events pretty well, however I am struggling to calculate the APY for rewards distributed on Avalanche and Optimism. I have been scouring the docs to find how the Reward APY on the website is calculated and cannot find anything. I was wondering if there is a way to calculate Rewards APY, ideally from log events?

Any information would be greatly appreciated!