Buy enough checks to last nine months to a year
Small firms may want to order a slightly larger supply, since prices are significantly higher for quantities of less than 1,000 checks.

Make sure computer checks and software are compatible
You can usually specify what program you use, or send a voided check to the firm to find a close match. It is not necessary to use the checks from the software company.

Verify your routing code
Usually, all you need to do to get checks made is to send in a voided current check. It makes good sense to take the few minutes of calling your bank and confirming your routing code. Routing codes often change as a result of a merger. In these cases, the routing code will eventually no longer be valid and you will then need to buy a new set of checks.