# CIP-38: Solver Computed Fees & Rank by Surplus

**URL:** <https://forum.cow.fi/t/cip-38-solver-computed-fees-rank-by-surplus/2061>\
**Category:** Closed Proposals\
**Tags:** cip, proposal, successful\
**Created:** [November 28, 2023, 2:19pm UTC](https://forum.cow.fi/t/cip-38-solver-computed-fees-rank-by-surplus/2061 "2023-11-28T14:19:27Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Filius](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/filius/32/1218_2.png) [@Filius](https://forum.cow.fi/u/Filius)\
**Post date:** [November 28, 2023, 3:15pm UTC](https://forum.cow.fi/t/cip-38-solver-computed-fees-rank-by-surplus/2061/3 "2023-11-28T15:15:55Z")

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Now that the rewards mechanism will be adjusted, it would be great if you would also consider the following post:

> [@Move Solver Rewards Mechanism from Theory to Practice](https://forum.cow.fi/t/move-solver-rewards-mechanism-from-theory-to-practice/1850):
>
> The new solver rewards mechanism has been ongoing for a couple of months. It’s only until recently that we got the time to dig into the way in which our solutions are being assessed and how our participation in the solver competition translates into P&L based on the new (more complex) rewards mechanism. Part of the new rewards mechanism consists of penalizing solvers when their solutions fail at execution time. In this case, the solver is penalized based on the score of the third best solution…

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_[View the full topic](https://forum.cow.fi/t/cip-38-solver-computed-fees-rank-by-surplus/2061)._