Don’t earn enough to pay tax but this month I will?

[nonamemummy]

I don’t normally earn enough to pay tax, but I’ve done a lot of overtime this month so will earn over the tax free allowance. Will I be taxed the normal 20% even though I probably still won’t earn the 12570 annual?

Yes probably unless you’re on a cumulative tax code, but then you’ll get it back either in your next few months pay, or a cheque after the end of the financial year.