As we approach the 31st October (and November 15th for Revenue on-line) it is important to bear in mind that single premium AVC's are not treated the same as personal pension contributions. Personal pension contributions come in under "Pay and File" whereas AVC contributions are "Pay and Claim"
i.e
the relief must be claimed before the 31st October. Last year Revenue were adamant that unless relief was claimed before this date it would not be granted. What you need to do is pay in the AVC before 31/10/2007 and elect to have it claimed against 2006 by means of letter to your Revenue District