Tax treatment of part-time income

I am working full-time for a company and am considering some part-time assignment during week-end on a one-time basis. I am in the 40% bracket. How will the income obtained from the proposed assignment be treated in my hands? I do not want to be classified as Self-employed for this purpose and I propose invoicing it in my name? How much NIC do I have to pay? Any other issues that I need to be aware of?
Rajaram Jamadagni

Comments
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BR Tax and NI - Deferment is an option

damianmc |

Agreed

AnonymousUser |

Agreed 2, the sequel

neileg |

Status

neileg |

PAYE and NIC

Anonymous |