Class 4 NICs: structure: annual Class 4 NICs maximum from 6 April 2003: contributors who are self-employed only: example: profits do not exceed the Upper Profits Limit
NIM24152 provides guidance on the calculation method used to determine the maximum amount of Class 2 and 4 NICs payable by a contributor who is self-employed only.
The following example illustrates the calculation for a contributor whose profits or gains for the tax year do not exceed the Upper Profits Limit (UPL).
The calculation method shown applies to tax years from 2003/2004. For guidance on the Class 2 and 4 NICs annual maximum for tax years before 2003/2004 see NIM24101 onwards.
The example uses the rates and limits in force during the 2012/2013 tax year. For rates and limits for other years see NIM24050
Mr Ennis has been self-employed for the whole of the 2012/2013 tax year. His profits for the year amount to £33,000. Mr Ennis held no other employments during the year.
Multiply by the appropriate Class 4 percentage rate, the amount of profits or gains between the Lower Profits Limit (LPL) and the earners actual profits or gains for the year
£33,000 (actual profits) - £7605 (LPL) = £25395 x 9% (main Class 4 percentage) = £2285.55
Multiply the relevant rate of Class 2 NICs by the number of weeks of self-employment in the tax year
£2.65 x 52 = £137.80
Add together the results of steps 1 and 2
£2285.55. + £137.80 = £2423.35
Mr Ennis is liable to pay a total of £2423.35 in Class 2 and 4 NICs for the 2012/2013 tax year.