31st July Deadline

2006/07 Self Assessment Tax Return to be filed by today in order to avoid second £100 penalty
Deadline for Tax Credits renewal to finalise claims for 2007/08 and renew claims for 2008/09
Second self assessment payment on account for 2007/08
Annual adjustment for VAT partial exemption calculations (April VAT year end)
Further 5% surcharge on any tax unpaid for 2006/07.
Filing deadline for Corporation Tax Return Form CT600 for period ended 31 July 2007 to be submitted to HMRC
Due date for June VAT returns