Tradind CFD and TAX

I have a question about paying tax when trading on CFD indices. For example, during the tax year I start with 20k and at the end of the settlement period I have 100k. During this period, I had loss positions worth 60k, but I ended the tax year with a deposit of 100k. How much tax do I have to pay in this tax period? Can I deduct 60k losses from my tax in some way? Thank you in advance for your answer.

Hi,

You can see guidance here:

CRYPTO20000 - Cryptoassets for individuals

Thank you.