# Is there a cost to changing delegation? **URL:** \ **Category:** Stake Delegation\ **Created:** [12 March 2021 10:42 UTC](https://forum.cardano.org/t/is-there-a-cost-to-changing-delegation/53201 "2021-03-12T10:42:49Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![tomdx](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/tomdx/32/44498_2.png) [@tomdx](https://forum.cardano.org/u/tomdx)\ **Post date:** [12 March 2021 12:45 UTC](https://forum.cardano.org/t/is-there-a-cost-to-changing-delegation/53201/4 "2021-03-12T12:45:01Z")
@Gaaike yes, there is a cost in reward. Lets say you delegate to a pool with 34m - that pool would mint 34 blocks / epoch. For each block the pool receives a total of 1k reward. The pool would therefore get 34k of rewards. First, the operator cost is deducted (i.e. 340 ADA) second the pool margin is deducted - lets assume that is 0%. ```auto 340 / 34k => 0,01 ``` With such a pool, there would be 1% of rewards that cannot be distributed proportionally. Now, you delegate to a small pool with 500k. That pool will make a block every other epoch. When it makes a block, it will also receive 1k of which 340 ADA are deducted. This is … ```auto 340 / 1k => 0,34 ``` Now, instead of 1% there are 34% of the rewards that cannot be distributed to the delegators. The larger the pool, the smaller that slice of pizza that gets deducted before proportional distribution. --- _[View the full topic](https://forum.cardano.org/t/is-there-a-cost-to-changing-delegation/53201)._