Failure to Report Income in Canada: Penalties and How to Correct It

What Should You Do If You Forgot to Report Income?

If you discover that income was omitted from a Canadian tax return, the appropriate way to correct the problem depends on the type of income, the amount involved, how many years are affected, whether the CRA has contacted you, and whether penalties or an audit are already involved.

An omitted amount does not automatically mean that severe penalties or criminal consequences will follow. However, delaying correction can result in additional tax, interest, penalties, and potentially increased CRA scrutiny.

Possible options may include changing a previously filed return, making a Voluntary Disclosures Program application, challenging an assessment, or requesting penalty and interest relief.

Quick Answer: What Should You Do First?

Identify what was omitted: determine the income source, amount, and affected tax years.
Do not simply file another original return: if the return has already been assessed, you generally request a change to the existing return.
Check whether the CRA has contacted you: this can affect which correction options are available.
Determine whether multiple years are affected: repeated omissions can increase penalty exposure.
Consider the Voluntary Disclosures Program: significant or multi-year omissions may potentially qualify for VDP relief.
Get legal advice where the amounts are substantial: particularly if the CRA is auditing you, penalties may apply, or there is potential criminal exposure.

What Does Failure to Report Income Mean?

Failure to report income occurs when an amount that should have been included in computing income is omitted from a tax return.

Examples can include:

Employment income;
Self-employment or business income;
Contract or gig-economy income;
Rental income;
Investment income;
Foreign income;
Cryptocurrency transactions that produce taxable income or gains;
Real estate income or gains;
Tips, commissions, or cash income; and
Other taxable amounts that were not included on the return.

The tax consequences depend on the facts. An innocent omission involving a single information slip is very different from a deliberate, repeated failure to report substantial income.

What Happens If You Fail to Report Income?

If the CRA determines that income was omitted, it may reassess the taxpayer to include the unreported amount.

The consequences may include:

Additional income tax;
Interest on unpaid tax;
A repeated failure to report income penalty;
A gross-negligence penalty in more serious cases;
A CRA audit or expanded review;
Collection action after an amount becomes payable; or
In serious cases involving suspected deliberate tax evasion, a criminal investigation.

If the issue has arisen during an audit, see our CRA Audit Letter: What to Do Next guide.

What Is the Repeated Failure to Report Income Penalty?

Subsection 163(1) of the Income Tax Act contains a penalty for repeated failures to report income.

The penalty may apply where a taxpayer fails to report an amount of $500 or more that was required to be included in income for the current year and also failed to report an amount of at least $500 in one of the previous three taxation years.

The omission does not necessarily have to be intentional for the repeated failure penalty to apply.

Under the current rules, the penalty is generally calculated as the lesser of:

10% of the unreported amount, taking the applicable federal and provincial or territorial components into account; or
50% of the difference between the understated tax or overstated credits relating to the omission and tax withheld from the unreported amount.

Special rules apply to Quebec residents, non-residents, deemed residents, and certain other situations.

For official CRA information, see False Reporting or Repeated Failure to Report Income.

What Is the Gross-Negligence Penalty?

A separate penalty may apply under subsection 163(2) of the Income Tax Act where a taxpayer knowingly, or under circumstances amounting to gross negligence, makes or participates in making a false statement or omission.

The penalty is generally the greater of:

$100; or
50% of the understated tax or overstated credits attributable to the false statement or omission.

Gross negligence is a more serious allegation than simply making an error or accidentally omitting income.

If the CRA proposes a gross-negligence penalty, the factual and legal basis for the penalty should be reviewed carefully.

Can Failure to Report Income Lead to Criminal Charges?

Most errors or omissions on tax returns are dealt with through the civil tax assessment and penalty system rather than criminal prosecution.

However, serious cases involving suspected deliberate tax evasion, false documents, concealed income, or other fraudulent conduct may be referred to the CRA’s Criminal Investigations Program.

A criminal tax investigation is different from an ordinary audit and can involve additional procedural and constitutional protections.

Learn more about our CRA criminal tax investigation services.

How Do You Correct Unreported Income?

The correct process depends on the circumstances.

For a straightforward error involving a return that has already been filed, taxpayers can generally request a change to the return rather than submitting a new original return.

Option 1: Change My Return

Individuals may be able to request a change through the CRA’s Change my return service in their CRA account.

This may be suitable for relatively straightforward corrections, such as an omitted information slip or another adjustment to a previously filed T1 return.

CRA currently reports that most online change requests are processed within approximately two weeks, although requests requiring additional review can take substantially longer.

For current instructions, see Changing a Tax Return.

Option 2: ReFILE

Where supported by certified tax software and the taxpayer’s circumstances, ReFILE may also be used to electronically submit changes to a previously filed return.

The available method depends on the taxpayer, year, return, and type of adjustment.

Option 3: T1 Adjustment Request

Individuals who cannot make the change electronically may be able to submit Form T1-ADJ, T1 Adjustment Request, with the required information and supporting documentation.

Paper requests generally take longer to process than electronic adjustments.

Should You Simply Amend the Return or Use the VDP?

Not every omitted amount requires a Voluntary Disclosures Program application.

A straightforward correction may sometimes be addressed through an ordinary adjustment.

However, the VDP should be considered where there are more significant compliance concerns, such as:

Multiple years of unreported income;
Significant amounts owing;
Unfiled returns;
Foreign income or assets;
Potential penalties;
GST/HST reporting problems;
Corporate tax omissions; or
Concern about possible prosecution.

The choice between an ordinary adjustment and the VDP can have important consequences and should be assessed before submitting the correction.

Can You Use the Voluntary Disclosures Program If the CRA Contacted You?

Potentially.

The Voluntary Disclosures Program changed significantly effective October 1, 2025.

Under the current framework, receiving certain CRA communications does not automatically make a taxpayer ineligible.

A taxpayer who has been prompted by CRA communications concerning a potential compliance issue may still qualify for partial VDP relief in appropriate circumstances.

However, taxpayers who are already under an audit or investigation concerning the information being disclosed are generally not eligible for VDP relief for that issue.

Eligibility therefore depends on what the CRA has already done and exactly what the taxpayer proposes to disclose.

For official information, see the CRA’s Voluntary Disclosures Program.

For legal assistance, visit our Voluntary Disclosure Program lawyers page.

What Relief Does the VDP Provide?

Under the current VDP framework, the amount of relief generally depends on whether the application is considered unprompted or prompted.

Unprompted Applications

General relief normally applies where the taxpayer comes forward before being prompted concerning the non-compliance.

An eligible unprompted application may generally receive:

100% relief from applicable penalties;
75% relief from applicable interest; and
Protection from referral for criminal prosecution relating to the disclosed information.

Prompted Applications

Partial relief may apply where the taxpayer was prompted by CRA communication but remains eligible for the VDP.

An eligible prompted application may generally receive:

Up to 100% relief from applicable penalties;
25% relief from applicable interest; and
Protection from referral for criminal prosecution relating to the disclosed information.

The underlying tax remains payable.

What If the CRA Has Already Assessed the Unreported Income?

If the CRA has already issued an assessment or reassessment that includes the allegedly unreported income, the issue may need to be addressed through the formal objection process rather than simply changing the return.

If you disagree with the CRA’s factual or legal conclusions, you may have the right to file a Notice of Objection.

See our Notice of Objection (T400A) guide for information about deadlines and filing requirements.

Can You Request Penalty and Interest Relief?

Taxpayer relief may be available where eligible penalties or interest have been assessed and circumstances justify the CRA exercising its discretion.

Examples may include:

Serious illness;
Extraordinary events;
CRA errors or delays;
Financial hardship; or
Other qualifying circumstances.

Taxpayer relief generally does not eliminate principal tax that was validly assessed.

The CRA currently reports an average processing time of approximately 16 months for requests to cancel or waive penalties and interest.

For more information, see our CRA Form RC4288 taxpayer relief guide.

You can also review the CRA’s official penalty and interest relief guidance.

What If the Unreported Income Creates a CRA Tax Debt?

Correcting previously unreported income may result in additional tax and interest becoming payable.

If the amount cannot be paid in full immediately, a payment arrangement may be available.

However, a payment problem should be distinguished from a dispute about whether the assessment itself is correct.

For information about dealing with an unpaid CRA balance, see our guide to what happens when you owe the CRA money and cannot pay.

If enforcement has already begun, see our CRA collections, wage garnishment, bank freeze and tax lien guide.

Should You Correct Unreported Foreign Income?

Yes. Canadian residents are generally subject to Canadian income tax on worldwide income, subject to applicable rules and tax treaties.

Foreign income, foreign investments, offshore accounts, and foreign-property reporting can create additional compliance issues beyond simply adding income to a T1 return.

Where multiple years or foreign reporting forms are involved, the appropriate correction strategy should be assessed carefully, including whether the VDP may be available.

What About Unreported Cryptocurrency Income?

Cryptocurrency transactions can result in business income, capital gains, or other tax consequences depending on the circumstances.

Failure to report taxable cryptocurrency transactions can result in reassessment, interest, and potentially penalties.

The correction should reflect the proper tax characterization of the transactions rather than simply reporting gross transaction values.

How Our Tax Lawyers Assist With Unreported Income

Identify the years and amounts affected by the omission;
Assess potential repeated-failure or gross-negligence penalties;
Determine whether an ordinary adjustment or VDP application is more appropriate;
Prepare Voluntary Disclosures Program applications;
Advise on CRA audits involving unreported income;
Challenge incorrect reassessments through the objection process;
Prepare taxpayer relief requests for eligible penalties and interest;
Address resulting CRA collection issues; and
Advise on criminal tax exposure where necessary.

Frequently Asked Questions About Failure to Report Income

What happens if I accidentally forget to report income?

The CRA may reassess the return to include the omitted income and charge additional tax and interest. Penalty exposure depends on the circumstances, including whether there were previous omissions and whether the conduct involved gross negligence.

Is the repeated failure to report income penalty always 10%?

No. The penalty is generally calculated using a statutory formula and is the lesser of the applicable 10% amount and 50% of the specified difference involving understated tax or overstated credits and tax withheld.

Can I apply for the VDP after the CRA contacts me?

Potentially. Under the current VDP rules, some prompted applications can qualify. However, a taxpayer who is already under audit or investigation concerning the information being disclosed is generally not eligible for VDP relief for that issue.

Should I file another tax return if I forgot income?

Generally, no. If the return has already been filed and assessed, the taxpayer normally requests a change to the existing return using an available CRA adjustment method.

How long does an online tax-return adjustment take?

CRA currently reports that most online requests are processed within approximately two weeks, although requests requiring further review can take substantially longer.

Can taxpayer relief eliminate the additional tax?

Generally, no. Taxpayer relief ordinarily applies to eligible penalties and interest, not principal tax that was validly assessed.

Can failure to report income result in criminal prosecution?

Most omissions are handled through the civil tax system. Serious cases involving suspected deliberate tax evasion or fraudulent conduct may, however, result in a criminal investigation.

Speak With a Tax Lawyer About Unreported Income

If you discover that income was not reported on one or more Canadian tax returns, the best correction strategy depends on the amount involved, the years affected, whether the CRA has contacted you, and the potential penalty exposure.

KR Law Firm assists individuals and businesses with tax-return corrections, Voluntary Disclosures Program applications, CRA audits, objections, taxpayer relief, and related tax matters across Canada.

Book a Free Consultation with one of our tax lawyers to discuss unreported income or another Canadian tax compliance issue.