You think if you’re only managing a small-scale business, then cost is an easy thing. Or you think that if you put much energy to manage costs, the “costs” to manage will outweigh the benefits. That’s true, if you already know where your costs go and allocate them as efficient as possible. As I read in an article about cost checklist for small business, some entrepreneurs tend to underestimate their business costs just to find later that they have problems with the profit and cash flow. Do you ever calculate the ratio of your yearly costs to your sales revenue on a monthly basis? Some others like bank charges, bad debts estimation, and mark up are also those we often miss. Read this article for costs you might not realize and some guidelines.