I've recently retired on a FIRE basis. This means I have a small (very small) pension income, a tiny income from a very part time job, but mostly I'm living from savings and savings income, mostly in ISAs so no tax due on the interest income.
My taxable income is below the personal allowance, so I am currently a non tax payer, having until recently been a higher rate tax payer. My "spending power" is higher because I am transferring money to spend from savings and investments, but that's OK, I can show where that has come from, and that no tax is due on it.
I have a friend/companion that I do a lot of travelling with. Usually when we are away, I put everything on my credit card and we split it all when we get back. It just makes things easier than saying you got lunch today, I'll get it tomorrow or splitting the bills, and we're both very happy with the arrangement.
We use my card because I have one with £0 overseas charges and he doesn't do credit, having previously got himself in a mess. I pay mine in full every month.
Anyway, I am concerned that these payments from him look like an income and that "someone" might think I need to pay tax on it. Is that likely? It will amount to several thousands over the course of a year.