Re: Person who is employed part time 2.5 days a week and self employed the other 2.5
Black Sheep is correct. Any self-employed person, whether they have other employments or not should register with Revenue on Form [broken link removed] . The self-employment and the PAYE employment are filed together annually on Form 11 . There are guidelines on Revenue's site on the dates of payment of tax and broadly what expenses are allowable from self-employment.
The taxation basically works by taking the total income from all sources ( gross PAYE and net income from self-employment) , calculating tax on the totals, deducting tax credits, deducting tax already paid on PAYE and the balance is payable direct to Revenue. PRSI/Levies may also be payable depending on income levels.
Bear in mind that if the self-employment is a service and if income before expenses exceeds €37,500pa from the self-employment then VAT registration may be necessary (unless the activity is a VAT exempt one)