Does DS giving me £40 per week for food and washing come under Rent a Room?

[crepeyneck]

Anywhere I can officially check?

[crepeyneck]

He is just about to move back home and not sure what to do.

[Sockattack]

Look at the hmrc website and guidance

[Ta1kinPeace]

if he is part of your family and contributing to the household , what has it to do with the tax man?

[hellsbellsmelons]

You can take £4K for rent for your house per annum without having to pay tax.
How old is your DS?

[Houseworkavoider]

What is rent a room?

[Ta1kinPeace]

next year the rent a room allowance doubles
BUT
there are restrictions on family members claiming their rent as expenditure

[Queenbean]

No it doesn't, you can accept £4250 without having to pay tax - check the gov.uk website

You're far below the threashold

[Ta1kinPeace]

www.gov.uk/government/publications/rent-a-room-for-traders-hs223-self-assessment-helpsheet/hs223-rent-a-room-for-traders-2015

[OldBloodCallsToOldBlood]

No, it doesn't. He's family. He's making a normal contribution to the running of the household. You wouldn't include a spouse under the rent a room scheme, so you wouldn't include a child either.

[overthemill]

Payments made by family Memebers towards household expenses are not taken into account so you don't need to worry . Rent a room is so you can rent out your spare room to non family members