apply the Self Assessment without NI number?

My mother moved to the UK from 2021. She is 71 years old. She hasn't work in the UK and she got the interests from the fixed team saving. Now I would like to help her to apply the self assessment without NI number. What can I do for her because she cannot apply the NI number? Can I help her to do the tax return without NI number? Many thanks.

Hi,
It is possible to register for Self Assessment without a National Insurance number. Details on how to do this can be found here:
Check how to register for Self Assessment
However, you need a National Insurance number to make sure your NI Contributions and tax are recorded against your name only. If you do not have an National Insurance number you can apply for one here:
Apply for a National Insurance number
If you have lost your National Insurance number you can use the guidance here to find it:
Find your National Insurance number
Thank you.

Hello, I have also the same problem. When applying for an NI number for my retired mother, it only allows if the NI is for looking for work and 'You cannot apply for a National Insurance number for any other reason'. Could you help to clarify how we can go through the NI application process? Thank you!

Hi Chan,
You have not said why your mother needs a NI number.
I assume you have tried to use this link to apply – 
Apply for a National Insurance number and because you have presumably stated ‘not working or looking for work’
The response states you cannot use this service to apply. It does not say you cannot apply - 
https://www.apply-national-insurance-number.service.gov.uk/apply/may-not-need-nin.
It goes onto say – 
If you were told to apply for a National Insurance number to get benefits or a student loan paid, you should not use this service. We will contact you and tell you how to apply for a National Insurance number.
If you entered your mobile number as part of your application for benefits or a student loan, we will send you a text telling you what to do. If you did not provide your mobile number, we will send you a letter.
You cannot apply for a National Insurance number for any other reason. For example, you cannot apply for a National Insurance number only because you need to open a bank account, open an Individual Savings Account (ISA) or pay into a pension.
If you have been told you need a National Insurance number for any other reason, contact the organisation that told you this. They should have an alternative process for people who do not have a National Insurance number.
Thank you.

I have exactly the same problem. I have never worked in the UK and am now retired and so National Insurance will not issue me with a NI number. I have tried to register for self assessment without one and it is simply not possible. I wrote to HMRC about it and they opened a self assessment account for me and have also issued a NINO but since it is not in the standard format, it is rejected as invalid and I still cannot access the online account they created for me.

Hi again, As noted on this forum by others who have tried to register for self-assessment tax online, the relevant HMRC website requires a National Insurance number and will not allow access without one. However, senior citizens like myself cannot obtain a NI number since, having reached the state pension age of 65, they no longer pay National Insurance contributions and therefore do not need - and will not be issued - a NI number. As a result, anyone over 65 who does not have a NI number cannot pay tax using HMRC’s online service. Apparently people in this situation can only file a tax return by post using a paper tax form. This can be downloaded from the HMRC website (no NI number required). Note that the paper Self-Assessment tax form has to be returned by 31st October (as opposed to the deadline of 31st January for online tax returns). Anyone filing a Self-Assessment tax return also needs a UTR (Unique Tax Reference). This is normally obtained by registering with HMRC online, but since this is not possible without a NI number, the only way to obtain a UTR is by writing to HMRC and asking for one. I hope this helps.

I have previously got a utr number without ni. Now i get a ni, how to link my ni number to my existing utr number ?

Hi ,
 

If you received your UTR first, we would need to review both records in order to link both records correctly - contact us by webchat, phone or post via : Self Assessment: general enquiries   to allow us to do this. Thank you .