Single return tax preparation software

Easy. Convenient. ProFile's single tax return software.

OnePay tax preparation software for accountants is ProFile's pay-as-you-go option.


Available in T1/TP1, T2/CO-17, and T3/TP-646, each OnePay version contains all of the forms, worksheets and schedules you need.


View our system requirements (updated for upcoming Windows 7 End of Support) and license agreement for details.

Purchasing OnePay


OnePay can only be purchased from within ProFile, where you'll be directed to a secure web page to complete your OnePay purchase.


You will receive an email confirmation (the access code you receive will not be entered into ProFile).

What you need to know


  • You must have an EFILE number to file T1 returns using OnePay.
  • Your taxpayer information MUST be correct as it cannot be changed later.
  • The purchase process attaches information to the specific return to complete the transaction, so you MUST save the return when the process is finished.
  • Once you've unlocked your tax return software, OnePay is not refundable.

Need more details?

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