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Posted Fri, 03 May 2024 10:31:19 GMT by jopp
I have tried registering my children for a Self Assessment online, but it will not allow me as the applicant is under 15 years and 9 months. I have since got their UTR number and NI number. I have then sent off a paper tax return as I was unable to do online. This has just been returned, saying that "while it is ok for a mother to sign, we do not have her as a third party on the record." There is no information what I need to do on the letter about how I add myself as a third party - could someone advise please? They have given me a deadline of returning the completed tax return by 8 May. I have been on the self-assessment line now for 45minutes.
Posted Mon, 13 May 2024 08:55:46 GMT by HMRC Admin 32
Hi,

To be added as a third party on your child's record, please write to us confirming your name, date of birth, and address, and also what you would like authority to do on their behalf.
Both you and your child should sign the letter, confirming that they agree to your acting on their behalf as a third party.

Please send your letter to:

Pay As You Earn and Self Assessment,
HM Revenue and Customs,
BX9 1AS

Thank you.
Posted Sat, 18 May 2024 19:26:04 GMT by jennyb52
@jopp, how did you get the UTR and NI number for your child? I need to submit a return for my 10 year old and my 15 year old and can't figure out how, thanks!

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