# PCP\_TreasuryTax-tau-parameter\_EarnCoinPool

**URL:** <https://forum.cardano.org/t/pcp-treasurytax-tau-parameter-earncoinpool/123245>\
**Category:** Parameter Change Proposals (PCP)\
**Tags:** pcp\
**Created:** [27 October 2023 16:10 UTC](https://forum.cardano.org/t/pcp-treasurytax-tau-parameter-earncoinpool/123245 "2023-10-27T16:10:02Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Smaug](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/smaug/32/53604_2.png) [@Smaug](https://forum.cardano.org/u/Smaug)\
**Post date:** [7 November 2023 21:43 UTC](https://forum.cardano.org/t/pcp-treasurytax-tau-parameter-earncoinpool/123245/4 "2023-11-07T21:43:58Z")

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I think it’s important to note that according to [Double treasury taxation of 40% and possible workarounds](https://forum.cardano.org/t/double-treasury-taxation-of-40-and-possible-workarounds/41461), Tau was changed from 0.05 to 0.20 because the destination of unclaimed rewards was also changed from treasury back to the reserve for the benefit of both delegators and pool operators:

> [@Double treasury taxation of 40% and possible workarounds](https://forum.cardano.org/t/double-treasury-taxation-of-40-and-possible-workarounds/41461/1):
>
> Few weeks before the Shelley mainnet launch they chose to set the treasury tax (tau) to 20% and to change the destination of unclaimed rewards from treasury back to the reserve for the benefit of both delegators and pool operators.

A side effect though is that it introduced a double taxation described in the post.

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_[View the full topic](https://forum.cardano.org/t/pcp-treasurytax-tau-parameter-earncoinpool/123245)._