Maxx Mitchell Tax Software
Run your tax office on software that comes with a team behind it.
Enroll your PTIN office or your EFIN, sign your agreement, submit your documents, and get approved access before the season starts.
Use the demo link to explore the software demo with a walkthrough account before you enroll.
PTIN office signup
You prepare returns. We hold the EFIN.
Offices of 1 to 12 members start at $125. Offices of 13 to 20 members pay $325. A $25 electronic filing fee applies per return.
Start this path
EFIN enrollment
You hold your own EFIN.
Annual plans from $199 to $799, plus a branded software option at $1,289. Choose the support level your office needs.
Start this path
How enrollment works
- 01
Create your client account
Start with your office name, contact details, and the path that fits you.
- 02
Choose your plan and pay
You see the plan, fees, billing frequency, and full amount before you confirm.
- 03
Sign and submit
Review your agreement and upload your ID and PTIN or EFIN documents in the secure portal.
- 04
Get approved
Our team reviews your file. Software access is delivered only after approval.
Inside the member portal
One place for everything your office needs from us during the season.
- Enrollment and payment status
- Agreement status
- Secure document center
- Support tickets
- Missing file notices
- Office setup guides
- Partner resources
- Payout notices
Also available: bookkeeping and payroll services for your office.
Official IRS guidance for tax professionals
Sources reviewed October 6, 2026. This information is not legal advice. State requirements vary and should be reviewed by a qualified attorney.
- PTIN requirements for tax return preparers (IRS.gov)
- E file provider services (IRS.gov)
- How to maintain, monitor and protect your EFIN (IRS.gov)
- Publication 4557, Safeguarding Taxpayer Data (IRS.gov)