This formula appears to work:

=DATEDIF(DATE(YEAR(A1)+IF(A1DATE(YEAR(A1),4,6),1, 0),,),DATE(YEAR(A2)-IF(A2<DATE(YEAR(A2),4,5),1,0),,),"y")

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Best Regards,

Luke M
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"Dan" wrote:

I need to calculate the number of complete UK tax years between two dates e.g.

From: 01/08/1994
To: 01/03/1998
= 2 complete tax years.

This is derived from:
01/08/1994 to 05/04/1995 - Not a complete year therefore ignored
06/04/1995 to 05/04/1996 - Complete tax year therefore counted
06/04/1996 to 05/04/1997 - Complete tax year therefore counted
06/04/1997 to 01/03/2008 - Not a complete year therefore ignored

A tax year runs from 06 April to 05 April the following year.

This is a pretty long-winded explanation of the calc but hopefully it gets
the concept across. Any support would be greatly appreciated.

Regards
Dan