I’m fairly sure as a Sole Trader it all counts as earnings no matter if you leave it in a business account or move it into a personal account. So it will be business income minus outgoings, i.e. any purchases or expenses. So the simple answer is that you will pay tax on roughly the 80%.
However, it’s not really that simple. 😕
VAT on income can be cancelled out against business purchases which include VAT. Also you will pay NI which is deductible against the 80% figure above. Also any expenses incurred in the business will be deductible against the 80%, this can be anything used or purchased for the business.
So the ‘not so simple’ answer is non of your figures above but probably somewhere between 50 and 80.
Do you have an accountant? I would get one as they can give you advice and do your end of year tax return and they can save you more money than they cost. You don’t want to end up in a pickle with the HMRC. 😀