The best thing I like about CheckMark Payroll is that it is the most affordable payroll software for small business in the market. The reason I am prioritizing this software is that for one yearly price, we can run unlimited payrolls and add unlimited employees. If you start an additional store in your area or goes national, no problem, all for one price. Then you can do direct deposit, W2 e-filing, check printing and many more things which made me to rank it number 1 on my list.