“Be aware, too, that if you select a product with too little capability, you usually have to recruit other applications, such as Excel and Access, to perform tasks the accounting software can’t handle. Such fill-in resources are called “renegade” systems, and in the long run, they cost more to operate than systems built into the software. That’s because data usually have to be reentered into them, and that can cause errors and duplications. It’s estimated the annual cost of running renegade applications rises exponentially as the complexity of the accounting software they support increases.”