I actually was going to do a 'how to sort out your expenses', guide, but I never got round to doing it, but that spreadsheet Slumpy provided (thanks, I may use it) looks good; though I do mine different.
Anyway, here's a simple tip for getting your expenses together:
If it's not already A4 sized, then make it A4 by stapling them to a blank piece of A4 paper.
I then put them in date order, number them, and input each separate one onto a large spreadsheet that breaks down fuel, postage, phone, etc; and it adds it all up for me.
The finished pile looks like this:
I'm fairly organised (and tight), so even small items I'll put down as expenses and then I'll check through each payment voucher (receipt) and write the amount applicable:
Example:
By the way, even though there's a cannabis leaf on my tobacco tin, I don't smoke illegal drugs (though some may suspect I do). I was faced with a choice of a Welsh dragon or a drug emblem, and opted for the druggie tin!