Can a CPA file 1099s and W-2s for clients from one online platform?

Yes—a CPA can often file both 1099s and W-2s for clients from one online platform, as long as the platform supports both workflows and the CPA is authorized to act for the client.

A few key points:

• 1099s are generally filed for contractors/vendors.
• W-2s are filed for employees and usually require payroll-related information and withholding data.
• Many tax/payroll platforms let accountants or CPAs manage multiple client accounts and submit both types of forms from a single dashboard.
• The CPA must have:
  • proper client authorization/engagement
  • correct employer/payer details
  • access to the needed wage, withholding, and contractor payment data
  • compliance with IRS and state filing rules

Important caveat: Not every platform does both well. Some platforms are built for 1099 e-filing only, while others include payroll/W-2 filing. So the answer is yes in principle, but it depends on the software.

If you want, I can also help you compare common platforms for CPA firm use.