
These are Temporary Numbers which were used by employers and DWP when they did not know an individual’s NINO.Įmployers are no longer permitted to use TN numbers and they will not be accepted by the Quality Standard. This should no longer be used.įormer Inland Revenue processing used PZ and PY as administrative numbers from the 1970s for tax-only cases, but these have not been used since August 2002.

The PP999999P reference was used in past pension scheme reporting. Was used for Stakeholder Pensions, a scheme administrator may have allocated an in year dummy identifier beginning ‘NC’ followed by six numbers based on the date of birth and ending with ‘m’ or ‘f’ for the gender. This has not been used since 2005-2006. Previously used for Attendance Allowance claims The customer should already have applied for a valid UK NINO. This “prefix” is used for temporarily administering Tax Credits where no NINO is held at the start of the tax credit claim. The administrative prefixes used include: The individual will need to apply to DWP for a NINOĪdministrative Numbers and Temporary Numbers (please note that Temporary Numbers are no longer used)įor administrative reasons, it has sometimes been necessary for HMRC and DWP to use reference numbers which look like NINOs but which do not use valid prefixes. A TRN will not allow the customer to access benefits and other services which use the NINo. The TRN is an HMRC reference number which allows the individual to pay tax/NICs it is not a NINO. It is sometimes necessary to use a TRN for Individuals. Top of page Temporary Reference Number (TRN) Although contribution cards are no longer used, the suffix has remained an integral part of the NINO. “A” meant the card was to be returned in March “B” in June “C” in September and “D” in December. The suffix dates back to when contributions were recorded on cards which were returned annually, staggered throughout the tax year.

The letter O is not used as the second letter of a prefix.The characters D, F, I, Q, U, and V are not used as either the first or second letter of a NINO prefix.Then another prefix is used, but not necessarily the next one alphabetically. The PrefixĬurrently a prefix is chosen and then used until all the possible numbers have been allocated. This is an example only and should not be used as an actual number. A NINO is made up of 2 letters, 6 numbers and a final letter, which is always A, B, C, or D.
