After some advice as this is new territory for me.
I work flexibly in a recognised profession but am going to use some time to work in a different capcity for a family member. This person runs their own business but is completely chaotic in terms of admin, invoicing, scheduling etc. He is proposing employing me as an assistant in some of my free time (I work two full days, a couple of mornings and a few hours in late afternoons/evenings at present).
I'd take over basic bookkeeping, scheduling, booking travel, organising expenses, running his to-do list, summarising his emails etc, all of which I enjoy and would be good at and would leave him free to do the skilled work.
My question is, how much should I charge per hour for this? In my other job I charge between £38 and £50 ph but this role has the benefit of being more flexible, fully remote and during school hours which is valuable to me. Is £20-25 per hour the right ballpark?