# Binance cost basis wrong

**URL:** <https://discuss.koinly.io/t/binance-cost-basis-wrong/9223>\
**Category:** Koinly Support\
**Created:** [December 8, 2021, 9:42am UTC](https://discuss.koinly.io/t/binance-cost-basis-wrong/9223 "2021-12-08T09:42:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Crypto\_Wanderer](https://yyz2.discourse-cdn.com/flex052/user_avatar/discuss.koinly.io/crypto_wanderer/32/5675_2.png) [@Crypto\_Wanderer](https://discuss.koinly.io/u/Crypto_Wanderer)\
**Post date:** [December 8, 2021, 9:42am UTC](https://discuss.koinly.io/t/binance-cost-basis-wrong/9223/1 "2021-12-08T09:42:25Z")

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I have multiple issues with cost basis on Binance, It will show transaction of X coin bought for eg $2100 USDT and when sold back to USDT a day later for $2300 it shows a gain of $800. How is this correct? I kind of understand the Shared pool idea but surely these should be standalone transactions?

Binance

\*\*How did you import data into this wallet? API

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**Author:** ![system](https://canada1.discourse-cdn.com/flex052/uploads/koinly_app/original/1X/7ac58e5593a7122893d066794a7254dcdb5ddb31.png) [@system](https://discuss.koinly.io/u/system)\
**Post date:** [February 6, 2022, 9:43am UTC](https://discuss.koinly.io/t/binance-cost-basis-wrong/9223/2 "2022-02-06T09:43:01Z")

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