Tax Instalments: Who Has to Pay and How to Avoid Surprises

In Canada, most individuals pay income tax through amounts withheld from their paycheque by an employer. However, some Canadians may encounter a different payment structure known as CRA tax installments. These installment payments may apply when enough tax has not been withheld during the year and an individual has a recurring net tax owing when filing an income tax return.

The process is administered by the Canada Revenue Agency (opens in a new tab) (CRA). Instead of paying a large lump sum at tax filing time, some individuals may be required to pay tax installments in advance throughout the tax year.

This article provides an overview of tax installments for individuals in Canada, including who may be required to pay them, how installment payments work, and when installment due dates may occur. The explanation reflects information based on published CRA guidance and the framework outlined in the Income Tax Act.

What CRA Tax Installments Mean

Tax installments refer to advance payments toward an individual’s expected income tax for the year. Instead of paying the entire tax balance after filing a return, the tax may be divided into several installment payments throughout the year.

The Canada Revenue Agency may send an installment reminder to individuals whose previous tax filings indicate that additional tax could be owed beyond what was withheld at source.

In many cases, installments may apply to people whose income does not have regular tax withheld. Examples may include:

• Individuals who are self employed

• Investors earning income from investments

• Individuals receiving rental or business income

• Those receiving certain pension or contract income

When these situations occur, the CRA may determine that an individual may have to pay tax by installments in order to cover part of their expected tax payable for the year.

Who May Be Required To Pay Tax installments

Whether a person is required to pay installments typically depends on their net tax owing from previous tax years.

According to guidance published by the Canada Revenue Agency, individuals may be required to pay installments when their net tax owing exceeds a specified threshold in multiple years. Net tax owing refers to the difference between the total tax payable and the taxes paid during the year, including amounts withheld by an employer or previous installment payments. 

Note: For the purpose of determining whether instalments are required, the CRA's definition of net tax owing does not include previous instalment payments already made."

Generally, the CRA reviews previous filings to determine whether required tax installments may apply.

Situations where installments may become relevant include:

• Income earned without tax withheld

• Income from self-employment or freelance work

• Significant investment income or capital gains

• Rental property income

• Other earnings not subject to withholding

Residents of most Canadian provinces may encounter the same installment threshold, although residents of Quebec may encounter different requirements because provincial income tax administration is handled separately.

Because installment requirements rely on previous tax data, individuals who owed a large balance in a recent tax year may receive an installment reminder from the CRA in the following year.

How Net Tax Owing Is Calculated

The concept of net tax owing plays a central role in determining whether tax installments may be required.

Net tax owing may represent the difference between:

• Total income tax payable for the year

• Minus taxes already paid through withholding or credits

Note: For the purpose of determining whether instalments are required, the CRA's definition of net tax owing does not include previous instalment payments already made. 

For example, taxes may already be paid through:

• Payroll deductions from an employer

• Installment payments made earlier in the year

• Certain refundable credits

If these amounts do not cover the total tax payable calculated on the income tax return, the remaining amount becomes the net tax owing.

When net tax owing exceeds $3,000 (or $1,800 for Quebec residents) in the current year and either of the two preceding years, the CRA may require the individual to pay instalments toward their taxes.

Installment Due Dates In Canada

CRA tax installments generally follow a quarterly payment schedule during the tax year.

Installment due dates commonly fall on:

• March 15

• June 15

• September 15

• December 15

These installments may represent advance payments toward the individual’s current year’s taxes.

For example:

• An installment payment due in March may contribute to tax obligations for that same tax year.

• The remaining installment payments throughout the year may gradually contribute toward the expected tax payable when the tax return is filed the following April.

The CRA may send installment reminders by mail or electronic account notifications indicating the suggested payment amounts and due dates.

Installment Reminders From The CRA

When the CRA determines that an individual may need to pay tax installments, it often sends a formal installment reminder document.

These reminders may include:

• The suggested installment amount

• Installment due dates

• Instructions on how to make payments

• Details about calculating installment payments

The document may be delivered through:

• A physical letter sent by mail

• A digital message in the taxpayer’s CRA account

Although the reminder provides suggested payment amounts, individuals may calculate installment payments using information from their previous or current income.

Methods For Paying installments

Several payment methods may be available when individuals pay tax installments.

Common payment channels may include:

• Online banking through a financial institution

• Payments through a CRA online account

• Pre-authorized debit payments

• Payments made at financial institutions

• Electronic transfer systems

Each installment contributes toward the total tax balance expected for the year.

Some individuals may choose to make four separate payments, while others may prefer to pay a larger amount earlier or make one lump sum payment covering multiple installments.

However, payment timing may affect potential interest charges if installments are insufficient or late.

Interest And Penalty Charges

Interest may apply if required tax installments are not paid on time or if the total amount paid during the year falls below the required threshold.

CRA installment interest may be calculated using a rate determined by federal tax regulations and may be compounded daily.

Situations that may lead to installment interest or penalties include:

• Late installment payments

• Payments lower than the required amount

• Missing installment deadlines

• Underestimating total tax payable for the year

If the installment interest exceeds a specific amount, additional penalty charges may apply under rules outlined in the Income Tax Act.

These calculations are typically based on the difference between the required installment amount and the amount actually paid.

Installments For Self-Employed Individuals

Individuals who are self employed often encounter installment payments because taxes are typically not withheld from business income.

Self-employed Canadians may earn income from activities such as:

• Freelance work

• Consulting services

• Independent contracting

• Small business operations

Without an employer withholding tax from each paycheque, a self-employed individual may accumulate a larger tax balance when filing an annual return.

If this pattern occurs in multiple years, the CRA may determine that tax by installments could apply in future years.

Business owners may also track additional financial information when preparing tax returns, including revenue, expenses, and business income details.

Installments And Investment Income

Investment income may also contribute to situations where individuals may have to pay tax installments.

Income from investments may include:

• Interest income

• Dividend payments

• Capital gains

• Income from certain financial accounts

Because this type of income may not always have tax withheld at source, it may increase an individual’s net tax owing when filing a return.

If investment income becomes a recurring source of tax payable beyond what has been withheld, installments may be introduced to distribute payments across the year.

How Installments Affect The Annual Tax Return

Even when installment payments are made during the year, individuals still file a standard income tax return.

When the return is filed, the CRA calculates the total tax payable based on reported income and applicable credits.

The installments paid earlier in the year are then applied toward that total balance.

Possible outcomes may include:

• A remaining balance if installments did not fully cover the tax payable

• A refund if installment payments exceeded the required amount

This reconciliation typically occurs when the return is filed during the spring following the tax year.

Installments And Tax Withholding Differences

Many Canadians pay taxes through withholding from their paycheque. In this system, the employer deducts income tax before the employee receives their salary.

However, not all forms of income have automatic withholding.

Examples may include:

• Business income

• Investment income

• Certain pension income

• Rental property earnings

When these income sources grow large enough to create recurring tax balances, installment payments may function as an advance payment toward next year’s taxes.

Installments In Quebec

Residents of Quebec may encounter slightly different procedures because provincial income tax is administered by Revenu Québec (opens in a new tab), rather than the Canada Revenue Agency.

Federal installment payments may still apply for Quebec residents, but provincial installment requirements may follow separate rules and administrative processes.

As a result, Quebec residents may receive communications from both tax authorities regarding installment obligations.

When Installments May Not Be Required

Even if a person receives an installment reminder, installment payments may not always result in additional tax liability when the return is filed.

For example:

• Income may decrease during the year

• Tax withheld from other sources may increase

• Tax credits may reduce the final tax payable

In these situations, installment payments may exceed the required amount and contribute to a refund when the income tax return is processed.

Because installment reminders rely on historical tax data, they may not always reflect changes in a person’s current financial situation.

CRA Communication And Taxpayer Accounts

The Canada Revenue Agency communicates installment information through various channels.

Taxpayers may receive:

• Installment reminders by mail

• Electronic messages through their CRA account

• Notices summarizing installment interest calculations

The CRA online account may also display:

• Previous installment payments

• Remaining balances

• Payment confirmation details

These tools may help individuals track payments made during the tax year.

Understanding CRA Installment Payments

CRA tax installments may function as advance payments toward an individual’s annual income tax obligations when enough tax has not been withheld during the year. Based on guidance from the Canada Revenue Agency, the requirement to pay tax installments may depend on previous net tax owing, the sources of income received, and whether payments were made through withholding or other methods. installment reminders, due dates, and potential interest charges may form part of this process. When individuals file their tax return, installment payments are typically applied to the total tax payable, which may result in either a remaining balance or a refund.