Hi,
For paper correspondence we are working at 36 weeks old, currently 9th May 2023, for voluntary class 3 contributions queries, but the allocation of contributions once they have been paid is 6 to 8 weeks.
If you have requested a refund in your letter, we are working to 3 weeks at present. You can check the reply time for specific types of post here:
Check when you can expect a reply from HMRC
As you have already paid funds and wish to move them to another year, as you have now confirmed the later years are beneficial with DWP, please contact our National Insurance team and they can assist you in moving the funds to another year. They will also advise you if there is any under or overpayment for the later years to ensure they are full qualifying years. Alternatively, if you have requested a refund and not to move the funds, please state this when you call so they can raise this with our refunds area as it would be past the timescales based on the date you have stated the letter was sent into HMRC.
National Insurance: general enquiries
Thank you.