How to file the 2003 CT23 short-form return — and autofill 013-1399d with my-id.ca

Complete a 2003 short-form CT23 return without retyping corporate details

Eligible corporations filing the 2003 CT23 Short-Form Corporations Tax and Annual Return repeat corporation name, business number, and registered office address on every return. This guide is an example of storing them once in my-id.ca.

Official form and source

Start from the official source and always use the current version — form numbers and links can change:

• Service page: Corporations tax — ontario.ca
• Form (Central Forms Repository): 2003 CT23 Short-Form Corporations Tax and Annual Return / Guide # 1401C (2003) — 013-1399d

What this form is about

Form 013-1399d is the 2003 CT23 Short-Form Corporations Tax and Annual Return with Guide # 1401C — confirm eligibility on ontario.ca.

Before you start: what to gather

• Corporation legal name and Ontario corporation number.
• Registered office address and business number.
• Director names and addresses if required.
• 2003 taxation year financial summary — prepare with your accountant.

Confirm the current process on ontario.ca.

How my-id.ca makes it faster

1. Save it once. Store your corporation name, address, and director details in your my-id.ca profile.
2. Keep documents ready. Upload supporting documents to my-id.ca Files so you are not searching at form time.
3. Autofill the form. Use the my-id.ca Chrome extension on a web form, or fill a PDF from your saved profile inside my-id.ca.
4. Review and submit yourself through the official channel.

Why do it in my-id.ca

Related Ontario forms repeat the same personal details. Captured once in my-id.ca — stored in Canada, with AI on its own servers — every form starts mostly complete.