Qualifying retroactive lump sum payments (QRLSP): what they are and how they're taxed in Canada

A qualifying retroactive lump sum payment is a single payment received during one tax year that relates, in whole or in part, to one or more previous tax years. These situations can occur when income that would normally have been paid over several years is delayed and later paid as one amount.

Examples may include:

• A retroactive payment arbitration award 

• Court-ordered employment settlements

• Certain pension adjustments

• Retroactive government benefit payments

• Some disability-related payments

When several years of income are compressed into a single tax year, the recipient's taxable income for that year may increase significantly. This can lead to what is sometimes referred to as lump sum payment bracket creep in Canada, where a larger portion of income may be taxed at higher marginal rates than would have applied if the amounts had been received in the appropriate years.

The QRLSP provisions within the Income Tax Act allow the CRA to review eligible payments and perform a special calculation that allocates the income notionally across prior years for tax calculation purposes.

Key requirements

To generally qualify:

• The payment must be at least $3,000, excluding interest

• The payment must relate to years after 1977

• The payment must have been made after 1994

• The recipient must have been a Canadian resident during the years to which the payment relates

• The payment must fall within an eligible category under the Income Tax Act

Why the special tax calculation exists

Canada's income tax system uses graduated tax brackets. As income increases, additional income may be taxed at progressively higher rates.

When a large retroactive lump sum payment tax situation occurs, several years of income can be reported in a single year. Even though the income relates to prior years, it may be added to current-year earnings when calculating tax.

The special tax calculation CRA process was created to address this issue.

Rather than reopening and changing prior tax returns, the CRA performs a separate calculation using the information provided on Form T1198. The agency estimates the tax that may have applied if the income had been received in the years to which it relates and compares that amount with the tax generated by reporting the entire payment in the current year.

If the special calculation produces a lower result, the CRA may apply it when assessing the return.

Qualifying payments: does your payment qualify? Eligibility criteria explained

Many taxpayers wonder, "Does my lump sum payment qualify?"

Eligibility depends on several factors, and all conditions generally need to be satisfied.

A payment may qualify when:

• The principal amount attributable to prior years equals or exceeds $3,000

• The payment occurred after 1994

• The payment relates to years after 1977

• The recipient was a resident of Canada during the years involved

• The payment falls within a qualifying category recognized by the Income Tax Act

Examples often associated with retroactive lump sum payment eligibility include employment settlements, arbitration awards, pension adjustments, and certain court-ordered payments.

The calculation is optional and is performed by the CRA after reviewing the information submitted. In some situations, the calculation may produce a lower tax result. In other situations, the outcome may be similar to ordinary taxation of the lump sum.

Payments that qualify

Several types of payments may qualify as a CRA lump sum retroactive payment.

Examples may include:

Employment income

Employment-related awards may qualify when paid under:

• A court order

• Tribunal decision

• Arbitration award

• Settlement agreement ending a legal proceeding

This category may include certain Bill 124 qualifying lump sum payments and some Phoenix pay QRLSP settlements where eligibility requirements are met.

Pension income

Certain retroactive pension payments relating to prior years may qualify when they meet CRA requirements.

Employment insurance benefits

Some Employment Insurance benefits paid retroactively may be eligible for QRLSP treatment.

Wage earner protection program payments

Eligible retroactive payments under this program may qualify when all other conditions are satisfied.

Support payments

Court-ordered retroactive support payments may qualify under specific circumstances.

Disability payments

Certain disability payments relating to prior years may also qualify.

Collective bargaining considerations

An important distinction exists between normal collective bargaining settlements and arbitration awards.

A payment resulting from routine collective bargaining negotiations generally may not qualify. However, amounts arising from an arbitration award, tribunal decision, or court order may qualify when the other eligibility requirements are met.

For example, some Bill 124 arbitration tax situations may be treated differently from ordinary negotiated wage increases.

Payments that do not qualify

Certain payments are generally excluded from QRLSP treatment.

Examples may include:

• Ordinary collective bargaining back pay

• Retiring allowances

• Legal expense reimbursements

• Salary reimbursements

• Lottery winnings

• Certain divorce settlements unrelated to support

• Some pension adjustments that do not arise from a qualifying order or award

• Amounts paid to trusts rather than directly to individuals

Where uncertainty exists, the payer may be able to provide clarification regarding the nature of the payment and whether a T1198 statement can be issued.

How the special tax calculation works

The CRA special calculation lump sum process does not change prior-year tax returns. Instead, it uses information provided on Form T1198 to perform a separate calculation that compares different tax outcomes.

The process generally works as follows:

Step 1: the payer allocates the payment by year

The payer completes Form T1198, showing:

• The total payment amount

• The principal amount

• Any interest included in the payment

• The amount attributable to each prior year

This breakdown allows the CRA to determine how much income relates to each year.

Step 2: the full amount is reported in the current year

Even when a payment qualifies as a QRLSP, the full amount is generally reported as income in the year it is received.

Depending on the type of payment, it may appear on:

• A T4 slip

• A T4A slip

• A T4E slip

• Another information slip issued by the payer

Step 3: Form T1198 is submitted

The recipient includes Form T1198 or an equivalent statement when filing the tax return.

This allows the CRA to determine whether the special calculation may apply.

Step 4: the CRA performs a notional calculation

The CRA calculates the tax that may have applied if each portion of the payment had been received in the year to which it relates.

The calculation uses:

• The taxpayer's reported income for those years

• Applicable tax rates for those years

• The allocation provided on the T1198

Step 5: the CRA compares the results

The CRA compares:

• Tax on the entire lump sum in the current year

• Tax calculated under the QRLSP provisions

If the special calculation results in a lower amount of tax, the adjustment may be reflected in the current year's assessment.

Illustrative example

An employee receives a retroactive salary court order tax payment of $18,000 in 2025.

The payment relates to:

• $6,000 for 2022

• $6,000 for 2023

• $6,000 for 2024

The employee's income in 2025 is significantly higher than in the earlier years.

Using the information reported on Form T1198, the CRA performs a calculation as though the $6,000 portions had been received in their respective years. If this produces a lower tax result than taxing the entire $18,000 in 2025, the lower amount may be applied.

The prior-year returns remain unchanged.

What is Form T1198?

Form T1198, also called the T1198 Statement of Qualifying Retroactive Lump Sum Payment, supports the QRLSP calculation.

The form provides the CRA with information about:

• The recipient

• The payer

• The nature of the payment

• The total amount received

• The portion attributable to each prior year

A typical T1198 form Canada submission may include:

• Total lump sum amount

• Total principal amount

• Interest paid

• Year-by-year allocation of principal amounts

• Description of the payment

The form allows the CRA to determine whether the payment meets retroactive lump sum payment eligibility requirements and whether the special tax calculation can be performed.

Where multiple qualifying payments are received, taxpayers may receive multiple T1198 statements. The CRA generally reviews the combined information when determining eligibility.

Who fills out Form T1198?

The payer is responsible for preparing the form.

Depending on the situation, the payer could be:

• An employer

• A government department

• A pension administrator

• An insurance provider

• Another organization making the payment

The recipient does not prepare the form.

Although the CRA encourages payers to provide a T1198 statement when a payment qualifies, there may not be a specific legislative requirement requiring the form to be issued in every situation.

If a payer does not provide Form T1198, they may provide a letter containing equivalent information, including:

• The amount paid

• The years involved

• The allocation of amounts by year

• The nature of the payment

Equivalent documentation may allow the CRA to review the payment for QRLSP treatment.

How to report a QRLSP on a tax return

Reporting a qualifying retroactive lump sum payment in Canada generally involves several steps.

Step 1: report the income

The full payment is generally reported as income in the year received.

The income may appear on:

• T4 employment income slips

• T4A slips

• T4E slips

• Other applicable tax slips

The amount is entered on the relevant line of the tax return according to the type of income received.

Step 2: include Form T1198

After reporting the income, include Form T1198 or the equivalent statement supplied by the payer.

This informs the CRA that the taxpayer may be eligible for the special tax calculation CRA process.

Step 3: file the return

Since recent filing changes, many taxpayers can submit QRLSP information electronically.

This means a separate paper return may no longer be required for many current-year filings.

Step 4: wait for the CRA calculation

The CRA reviews the information and performs the special calculation if applicable.

The result may appear on the taxpayer's Notice of Assessment.

The taxpayer does not perform the special calculation independently.

Conclusion: understanding QRLSP tax treatment in Canada

A qualifying retroactive lump sum payment may create unique tax reporting considerations because income relating to multiple years is received in a single tax year. When eligibility requirements are met, the CRA's special tax calculation can assess whether allocating portions of the payment to prior years results in a lower tax outcome. The full payment is still reported in the year received, with supporting information generally provided through Form T1198 or an equivalent statement. Understanding how QRLSP rules apply may help taxpayers accurately report retroactive income and ensure eligible payments receive appropriate tax treatment.