National Insurance hike for self employed in the Spring 2017 Budget

Currently, the self-employed may have to pay both Class 4 and Class 2 NICs:

Class 4 NICs at 9% are paid on profits between £8,060 and £43,000
Class 2 NICs are paid on profits of £5,965 or more

From 2018, Class 2 NICs will be abolished. Class 4 NICs will rise to 10% in April 2018 and to 11% in April 2019.

Taken together, only a self-employed person with profits over £16,250 will have to pay more as a result of these changes.