Frequently asked questions - General

1. What is Corporation Internet Filing?
2. What are the benefits of using Corporation Internet Filing?
3. Is there a cost to use Corporation Internet Filing?
4. Is Corporation Internet Filing secure and confidential?
5. When is Corporation Internet Filing available?
6. How do I use Corporation Internet Filing?
7. How do I get a Web Access Code or an EFILE On-Line number and password?
8. What is a Web Access Code?
9. What are the EFILE On-Line number and password?
10. Can I use my own software?
11. If I need more information about Corporation Internet Filing or if I have problems while using this service, whom should I contact?

1. What is Corporation Internet Filing?

Corporation Internet Filing is an electronic filing option that allows eligible corporations to transmit their corporation income tax returns for 2002 or following years directly to the Canada Revenue Agency (CRA) using the Internet.

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2. What are the benefits of using Corporation Internet Filing?

Corporation Internet Filing is fast, easy to use, and available 21 hours a day, Monday to Saturday, and 20 hours on Sunday. It is paperless, secure, and provides confirmation within minutes. This service reduces processing time, resulting in faster refunds.

3. Is there a cost to use Corporation Internet Filing?

Corporation Internet Filing is free. However, because you must use CRA-certified software, you may have to buy tax preparation software.

4. Is Corporation Internet Filing secure and confidential?

Yes. We use sophisticated encryption technology and security procedures to protect your information at all times.

Before a return can be transmitted, our computers check the level of encryption in the filer's computer browser. Given the nature and importance of the information, we need the highest possible level of security. Internet filing will be allowed only after we've determined that the filer has been properly identified using three items of identification, including an assigned Web Access Code or an EFILE On-Line number and password. For more information, see Security.

5. When is the Corporation Internet Filing service available?

This service is available 21 hours a day, Monday to Saturday, and 20 hours on Sunday. See Hours of service for the exact times of operation.

6. How do I use Corporation Internet Filing?

Check Before you start using Corporation Internet Filing for information on how to use this process to file a return. You must agree to the terms and conditions listed at Are you ready to file your return? before you enter the required corporation information that makes up your electronic signature: the Business Number, tax year end, and assigned Web Access Code or EFILE On-Line number and password.

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7. How do I get a Web Access Code or an EFILE On-Line number and password?

To get a Web Access Code, contact the Corporation Internet Filing Help Desk at 1-800-959-2803 during our Help Desk hours of service. To get an EFILE On-Line number and password, register as an electronic filer using the EFILE On-Line service, or contact the EFILE Help Desk for more information.

8. What is a Web Access Code?

A Web Access Coden (WAC) is an eight-digit number that forms a part of the electronic signature of a corporation, along with the Business Number and tax year end. A unique WAC is assigned to each corporation for each tax year. Tax professionals can avoid having to request a code for each corporation income tax return they file by registering for an EFILE On-Line number and password.

To request a Web Access Code, contact the Corporation Internet Filing Help Desk at 1-800-959-2803 during our Help Desk hours of service.

9. What are the EFILE On-Line number and password?

The EFILE On-Line number is a code consisting of a letter and four numbers that is used to identify a registered tax professional. A registered professional can use the same EFILE On-Line number and password to file all of their clients' corporation income tax returns using Corporation Internet Filing. To get an EFILE On-Line number and password, register as an electronic filer for EFILE On-Line, or contact the EFILE Help Desk for more information.

10. Can I use my own software?

You must use tax preparation software that has been certified by the CRA for use with Corporation Internet Filing. This means that the developer has established with the CRA that the software is compatible with CRA systems.

11. If I need more information about Corporation Internet Filing or if I have problems while using this service, whom should I contact?

If you need help or more information, call the Corporation Internet Filing Help Desk at 1-800-959-2803 during our Help Desk hours of service.