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Regulations 1(2) and 155 of the Social Security (Contributions) Regulations 2001 (SI 2001 No 1004)

From 6 April 2022 a self-employed earner is only liable to pay Class 2 NICs if the earner’s relevant profits exceed the Lower Profits Threshold (LPT). In such circumstances, Class 2 NICs are due for the relevant tax year at the weekly flat rate in respect of each contribution week or part of a week that a person is self-employed.

A ‘contribution weekâ€� is defined as a period of 7 days beginning with midnight between Saturday and Sunday. »Ê¹ÚÌåÓýapp first day of the contribution week is Sunday and Saturday is the last. »Ê¹ÚÌåÓýapp first week of the contribution year starts on the first Sunday after 5 April.

Some contribution years will include 53 contribution weeks, a person who is self-employed for the full year will be liable for all 53 weeks.

Example

»Ê¹ÚÌåÓýapp first contribution week of the 2021 to 2022 tax year starts on Sunday, 11 April 2021 and the last contribution week of that year ends on Saturday, 9 April 2022.

From 6 April 2024 the LPT was removed which means that liability to pay Class 2 NICs no longer exists.  If the earner's relevant profits are at or above the Small Profits Threshold (SPT), they are treated as having actually paid Class 2 NICs in respect of each contribution week or part of a week they are self-employed.

Some contribution years will include 53 contribution weeks, a person who is self-employed for the full year will be treated as having actually paid Class 2 NICs for all 53 weeks, if their relevant profits are at or above the SPT.