Tax On Savings Interest

Hi. I'm a full time carer (of a family member) and I receive Carers Allowance (CA). I am not employed, I have no other income whatsoever apart from building society interest. I've read that there is something called Savinigs Allowance of £5,000? What does this mean? Can you please tell me what is the current maximum interest that I can have (per year) before having to pay tax? If I have interest above this maximum, do I have to manually pay tax or will that be taken through the tax code. There used to be a TV advert saying "making tax simple" but I think the majority will agree that tax has never been simple...nor is it simple now. Thanks for any help.

Hi,

You can see guidance here:

Tax on savings interest

Thank you.