I would like to exercise some non-revenue approved options and put some of the gains towards my pension AVC's so that I can reduce my tax bill. I realise I must fill in Form RSTO1 and pay Revenue within 30 days but my question is do I need to pay into my AVC before 30 days? Will revenue require a receipt from the pension people and do I need to fill in any other form or just attach my computation of (Gain-AVC) x tax rate?