Payroll Client Onboarding
Complete your new-client paperwork in one sitting — Form W-4 (2026), Form I-9, ACH authorization, and our New Client Authorization Packet. Sign electronically and download your completed documents instantly.
Before you start, have these ready
Your progress is saved in this browser tab — but sensitive numbers are never stored.
- 01
Your details
Social Security number, date of birth, home address, phone, and email.
- 02
Business details
Registered entity name, entity type, registered address, and your 9-digit company EIN (required).
- 03
Banking
Bank routing and account numbers for the account payroll will be processed against.
- 04
I-9 & driver's license
A list of acceptable original documents (passport, or driver's license plus Social Security card) to show in person — and the owner's driver's license, which you'll photograph or upload during the form.
Your information is encrypted in transit and at rest. Documents are prepared for Better Business Services, Inc.