Bed and breakfast CGT violation with crypto - does gain end up in next CGT tax year?

Lysimache

So I had £5k of Bitcoin profits on 25th Mar 2021 - that was the entirety of my CGT gains in tax year 20-21.

I then unfortunately purchased £1k of Bitcoin on 20th Apr 2021 and immediately sold all that again on the same day for no gain. Note there's no profit in the Apr 2021 sale as it was immediately bought and sold again within seconds.

The bed and breakfast rule has been violated as it was less than 30 days apart that I sold Bitcoin and then bought Bitcoin. Fine - but I'm confused by it spanning two tax years. And how the the same day rule gets involved, if at all, as there's no profit when I bought/resold in April on the same day. I don't know what my 21-22 CGT gain has now become due to this violation. This tax year I'm likely to exceed my capital gains allowance and need to plan ahead for how much I've 'already' used up this year.

My concern is whether the £1k of bitcoin purchased and sold essentially drags some or all of my £5k Bitcoin gains the previous 20-21 tax year into a gain in the new 21-22 tax year, when the actual repurchase and sale had no real disposal attached to it as there's no profit?

Does that mean that in 20-21 tax year, only £4k was a capital gain, with the other £1k essentially a gain now automatically allocated to the 21-22 CGT tax year?

Thank you for your counsel!

Lysimache

Just to add that all my profits are simply from occasional purchases and even less occasional sale. I don't mine and I don't do heavy trading.

[Deleted User]

The same day purchase and sale occurred in 2021/22 tax year and has no effect on gains in 2020/21.  You also need to only look at purchases and sales when matching - you are casually employing the terms purchases, sales, profits and gains - it can be confusing.

Jeremy535897

[Deleted User] said:

The same day purchase and sale occurred in 2021/22 tax year and has no effect on gains in 2020/21.  You also need to only look at purchases and sales when matching - you are casually employing the terms purchases, sales, profits and gains - it can be confusing.

Yes, the same day purchase and sale matching rule takes precedence over the 30 day matching rule.