Class 4 contributions are paid by self-employed people as a portion of their profits, calculated with income tax at the end of the year, based on figures supplied on the SA100 tax return.
Class 4 contributions are paid by self at the end of the year. This was based on figures. Class 4 contributions are employed people as a portion of their profits at the end of the year. This was based on figures. Class 4 contributions are calculated with income tax at the end of the year. This was based on figures. These figures are supplied on the SA100 tax return.