TD1 Form Explained (Federal Personal Tax Credits Return)

The TD1 form is the federal Personal Tax Credits Return — a CRA form an employee completes so an employer can work out how much federal income tax to withhold from each paycheque. It is not the form a sole proprietor files to report business income; that is the T2125. The TD1 matters to a sole proprietor mainly when they hire staff, or when they also work as an employee somewhere else.

What the federal TD1 actually does

The TD1 tells a payer — usually an employer — which personal tax credits an individual expects to claim for the year. Credits reduce the amount of federal tax owing rather than the amount of income earned, so the payroll system uses them to estimate the right withholding. If no TD1 is on file, the employer typically withholds using only the basic personal amount, which can mean too much tax comes off during the year.

Two details trip people up. First, the completed TD1 is given to the employer, not mailed to the CRA. Second, it does not replace the employee's income tax return — it only shapes withholding at source. A separate provincial or territorial form normally has to be completed as well, which is covered in TD1 Provincial Forms Explained.

Who needs to complete a TD1 form

• New employees, who normally complete both the federal TD1 and the provincial or territorial version before their first pay.
• Existing employees whose credit situation changes — for example a marriage, a new dependant, or approval for the disability tax credit.
• People receiving certain pension or other income where the payer asks for a TD1 so withholding can be adjusted.
• Employees with more than one employer, who may need to complete a worksheet so the basic personal amount is not claimed twice.

Self-employed sole proprietors do not complete a TD1 for their own business income, because they are not employees of their own business. A sole proprietor who also holds a job completes a TD1 for that employer like anyone else. Employers who are unsure whether a worker is an employee or a contractor should review Independent Contractor vs Employee in Canada first, since the answer changes the paperwork.

How to fill out the TD1 form

1. Enter your identification details — name, address and the other personal information the form requests.
2. Claim only the credits that apply to you. The basic personal amount is claimed automatically; everything else must be checked against your actual situation.
3. Do not double-claim. If a spouse or common-law partner already claims a credit for a dependant, the same credit should not be claimed twice.
4. Complete the worksheet if you have more than one employer, so your credits are split correctly across payers.
5. Sign, date and give the form to your employer, and keep a copy for your own records.
6. Complete the provincial or territorial form as directed by your employer.

Most sections are straightforward once you know which credits exist. The table below outlines the common ones in general terms.

Section on the TD1	What it generally covers	Who usually claims it
Basic personal amount	The credit every employee can claim	Almost every employee
Age amount	A credit for employees at or above the age threshold the CRA sets	Older employees, subject to income tests
Pension income amount	Certain qualifying pension income	Recipients of eligible pension income
Disability amount	A credit for those eligible for the disability tax credit	Employees approved for the DTC, or a supporting person
Caregiver and dependant amounts	Support for an eligible or infirm dependant	Employees supporting a qualifying dependant
Tuition and student loan interest	Tuition credits and interest paid on student loans	Students and recent graduates
Amounts transferred from a spouse or common-law partner	Unused credits a partner transfers	Employees whose partner does not need the credits

The form also has a space for asking an employer to deduct additional tax at source, which some people use to avoid a balance owing at filing time. Confirm the current credit amounts and sections on the CRA website rather than relying on a form printed in an earlier year.

Federal TD1 versus provincial and territorial forms

The federal TD1 covers federal income tax only. Each province and territory has its own version — forms such as TD1ON or TD1BC, for example — that adjusts withholding for provincial or territorial tax. Employers normally ask new hires to complete both, and the provincial form follows similar logic but with different credits and thresholds. Someone who moves between provinces partway through the year may need to update both forms.

There are also related CRA forms that come up in payroll conversations, including a worksheet for claiming the basic personal amount when a person has more than one employer, and a form used when commission income and expenses affect payroll deductions. Which one applies depends on the situation, so check the CRA's payroll pages before completing one.

Why the TD1 matters for sole proprietors who hire

Once a sole proprietorship takes on employees, the owner becomes a payer. That means registering for a payroll account, withholding CPP contributions, EI premiums and income tax, remitting those amounts on the CRA's schedule, and issuing T4 slips. The TD1 is the input that makes income tax withholding roughly correct for each employee.

Keeping the forms on file matters too. During a payroll audit or review, the CRA may ask to see the TD1s an employer collected, along with records of pay and deductions. Filing them with payroll records from day one is simpler than reconstructing them later, and the broader rules are set out in Payroll Deductions in Canada and How to Hire Employees in Canada.

Updating a TD1 and keeping records

An employee can file a new TD1 whenever their situation changes; the employer should use the most recent version on file. A prudent employer asks for a fresh form periodically or after a significant life event, and keeps the earlier version rather than shredding it. CRA record retention rules generally require payroll and tax records to be kept for six years, though the starting point and the exceptions are worth confirming on the CRA website. More detail is available in Business Records Retention in Canada.

None of this is unusual paperwork, but it is easy to get wrong the first time. Today the safest approach is to download the current federal TD1 directly from the CRA, complete it alongside the correct provincial or territorial form, and store a signed copy with the employee's payroll file.