I did this many years ago and can't remember plus stuff will have changed
DD is a student finishing in July I she had a job at Christmas which they paid as if she was self employed - she earnt less than 20% of her tax free allowance
She will be self-employed (probably) next year and have to do a self assessment
Did there used to be (and is it still) that she can put last year income for SE into the first years of SE (when she has her start up costs) or am I misremembering or mixing myself up?
I used to do my dad's SA and mine then my mum had to do one, and DH did briefly - and now DD's as well! Perils of being seen to be good at maths!