I can see where your coming from though Seven Bays, and i know what your all saying, but it does hit you hard, April 2007 - 2008 was my first proper year with no expense.
Ive been window cleaning for around 4 -5 years, but the first couple of years only part time around another job. The third year i bought all my equipment so didnt have any tax but the 4th year was where i earned and didnt spend.
Got so used to not paying much tax that this hit me hard when the accountant letter came.
Opened it on xmas eve...nice present lol.
Will know for next year, but thing is ive gone and bought all this new equipment so maybe i might be up for a refund

wont hold my breath though.
I think im gonna lease a second vehicle in april to keep my tax down!