Do I need to complete a Self Assessment?

RolloTomasi68

I'm in my mid 50s and retired.

The vast majority of my income comes from my Cash ISAs and S&S ISAs that I have built up over many years.

Back in June I took my first SIPP UFPLS payment of just £6K.
I got taxed at emergency rate and filled in a form to claim it back.

I was totally transparent disclosing my non-tax efficient income,
which is around £4k a year from instant, fixed and regular savings accounts,
and around £800 from selling old stuff on eBay.

But since then:

I have sold some stocks in a GIA and made around £2.5k profit.

I've held crypto for many years but have never sold a penny, but last month I did transfer some ETH from my hardware wallet to Coinbase and exchanged £3k of ETH for SOL, then transferred it back to my hardware wallet.

I've just realised that this is considered a taxable event for CGT.
The £3k of ETH I transferred to SOL was bought for £1.5k a couple of years ago.

So the bottom line is would people consider it best to be on the safe side and complete a self assessment online before the deadline?

And if so, what should I include and exclude?

Thanks

eskbanker

https://www.gov.uk/check-if-you-need-tax-return includes a wizard to determine whether or not you need to self-assess, but if your capital gains are in the current tax year, then any self-assessment will be during 2025/26.