and also if you are "self employed" instead of "employed" for the extra ?10k this will

affect it.

if self employed...

you pay Class 2 and Class 4 National Insurance contributions.

Class 2 National Insurance contributions are paid at a flat rate of ?2.50 a week (?130)

Class 4 National Insurance contributions are paid as a percentage of your annual taxable profits - 9 per cent on profits between ?7,225 and ?42,475, and a further 2 per cent on profits over that amount

so 10k less 7225 = 2775 @ 9% = ?250

Posted By: Tony Martin, Sep 14, 12:13:50