We started out using a folder for each supplier for each year. Same thing for every other tax catigory like fuel, office supplies, gifts, tools, truck repairs, etc.
Problem was some folders like our main suppliers had so many recepts it was hard to find something. While other ones seemed like it was a waist of a folder because they only had a few things in them. Filing was a pain tring to find a place for an odball thing. Things like is a computer or a chair an office supply, equipment, or?
Last year we went to a new system. All material recepts for each month have a folder (example 1/04 material, 2/04 material). Everything elce goes in an expence folder for the month. That includes phone bills, fuel recepts, office supplies and other things that don't seem to have a home. Filing is easy.
I like the new system because it is easier to look back to see how much a certain material cost last month or last January. Where the first system I would be sorting thru a large pile to find anything. Plus I don't care what catigory an expence is. I'll let the accountant worry about that.
Although I could imagine how this system would not work well with a big company.
