NIM24004 - Class 4 liability: deferment & the annual maximum
Regulations 95 and 100 of the Social Security (Contributions) Regulations 2001 (SI 2001 No. 1004)
Regulation 15 of The Social Security (Miscellaneous Amendments No.2) Regulations 2015 (SI 2015 No.478)
For all tax years before the tax year 2015 to 2016, to avoid an overpayment of National Insurance contributions (NICs) and the need for refund later, a contributor was able to ask to defer any liability to pay Class 4 NICs.
Regulation 95 was amended by SI 2015 No. 478 following the move of collection of Class 2 NICs into Self Assessment. Deferment of Class 4 NICs is not available to contributors from the tax year 2015 to 2016.