The suffix letter is either A, B, C, or D. Until 1975, the suffixes A, B, C and D at the end of the NI number signified the period of validity of the National Insurance cards originally used to collect National Insurance contributions (NICs).
What is the format for a National Insurance number?
National insurance numbers (NINo) should appear in the following combination of letters and numbers – two letters, six numbers, one letter. For example: QQ 123456 C.
Why does my NI number end in B?
For example, the card for NI numbers ending in A covered the three months to February and would be exchanged for a new card at the beginning of March. Similarly, cards for NI numbers ending in B would be exchanged in June, C in September and D in December.
What do you do if you lose your National Insurance letter?
If you’ve lost or forgotten your National Insurance number, or need a letter confirming it, you can:
- register for or log in to your personal tax account to view or download, print, save or share a letter with it on.
- fill in the online form and post it to us, if you’re unable to register for a personal tax account.
What do the letters at the beginning and at the end of my NI number mean?
What do the letters at the beginning and at the end of my NI number mean? A National Insurance number (NI number) has three parts – a prefix of two letters, six numbers, and a suffix of a single letter. For example, AB123456C. Your NI number has no personal information about you; it is a randomly allocated reference number.
Can a NI number be used without a suffix?
Use the NI number that was sent back but enter the space bar instead of the suffix. Don’t try to truncate the number to right characters or guess which letter should be used. The Revenue also reminded those entering submissions that using an NI number without a suffix should only be used in this scenario.
When do NI numbers need to be exchanged?
They were not all sent in at the same time, but were submitted quarterly, with the quarterly submission dates defined by each suffix letter. For example, the card for NI numbers ending in A covered the three months to February and would be exchanged for a new card at the beginning of March.
How many NI numbers are in a series?
Each series has 999,999 different numbers. New NI numbers are allocated consecutively, e.g. PN000001A, PN000002B, PN000003C, PN000004D, PN000005A, etc. The single letter suffix can be A, B, C or D.
