Generally speaking, submitting yearly taxes as a business is a quite a different process than submitting taxes as an individual and although there are many reasons why it's important to use an accountant to ensure taxes are completed properly, it's also vital to employ an integrated payroll service over the course of the year so as to make tax time that much easier on employees and on the business. The reason it's important for businesses to use a properly run payroll service is because taxes must occasionally be adjusted over the course of the year and not paying enough can harm a business.