Forms You’ll Need
Completing T4 Forms
After every tax year, you have to complete a T4 slip for each of your employees. Then, you need to fill out a T4 summary with all your employees’ information. If you paid a pension to any previous employees or made payments to subcontractors, you should also fill out a T4A for them.
You must complete these forms for any employee you paid more than $500 or any employee on whose behalf you made payroll deductions. These forms must be given to your employees by the last day of February following the year during which they worked for you.
Filling Out Form TD1
To determine how much income tax you should withhold from your employees’ cheques, you should have them fill out Form TD1 (Personal Tax Credits Return). All new hires need to fill out this form, but you can also use it for employees who want to change their claims or increase their source deductions.
Start with the federal TD1. Then, if an employee claims more than the basic personal amount, you also fill out the provincial or territorial TD1. For instance, if they note a dependent, you must have the employee fill out the provincial or territorial form.
Individuals with multiple employers should not claim personal tax credit amounts on multiple TD1 forms. Instead, they should check the box next to “more than one employer” on the back of the form. Then, they should skip filling out lines 1 to 12 on the front of the form and write a zero on line 13.
Review the information on the form to ensure it’s correct. Double-check your employees’ SINs to make sure they match their photo IDs. You don’t have to send this form to the CRA when you're done. You simply keep it for your records and use it to help you calculate payroll deductions, but if the CRA requests to see these forms, you need to present them.