Payroll service provider

In accounting, payroll service provider means a firm that runs payroll under the employer's own EINEntity & complianceEmployer identification numberThe federal tax ID number the IRS assigns to a business, tax-exempt organization or other entity — the number on its returns, its payroll filings and the W-9 it gives customers — paychecks, deposits, Forms 941, 940 and W-2. It isn't liable for the employer's employment taxes; the employer stays liable for every deposit it makes.