I'm just submitting my tax return which I have to do because we claim child benefit despite earning over the threshold. Usually I just repay the whole amount paid (about £1000 I think, we just have one child) .
For some reason the payment due is coming out as £4k - has anyone else had this? I can only assume I've underpaid tax somewhere (I'm just PAYE so don't know how) but can't work out when/ how.
Was hoping there might be someone on with some experience of this!