If the client is self employed for less than 12 months or business is ceased before the end oftax year. Then the Class 2 NIC liability would be calculated proportionately. 

However, if you are willing to pay Class 2 NIC for the full tax year, please click on this check box as shown in the below to calculate Class 2 NIC for a full year.

This can be done in the following forms:

- Self Employment (Short Form) 

- Self Employment (Full Form) 

- Partnership (Short Form) 

- Partnership (Full Form) 

Navigation: Self Assessment >> Select a client >> Select a tax return >> Edit >> Add any of the above forms. 

Please see the attached screenshots below. 

Under the self assessment short form it can be seen below.

Under self assessment full form this option can be seen here. 

Under SA800 (Partnership)

Under SA800 (Partnership) - Short Form