Finding an old tax mistake often triggers two risky thoughts. The first is, “The amount is small, so CRA may never find it.” The second is, “It is already late, so I might as well wait and see.”

Both can make the problem worse.

Canada Revenue Agency’s Voluntary Disclosures Program, usually called VDP, gives taxpayers a way to come forward and correct past errors before the issue turns into an audit or investigation. It does not erase the tax that should have been paid. When the application qualifies, it may reduce penalties, reduce part of the interest, and provide protection from criminal prosecution related to the disclosed matter.

Starting October 1, 2025, the VDP rules draw a clearer line between two types of disclosures: Unprompted Disclosure and Prompted Disclosure. That change matters because it makes one common assumption less reliable: CRA contact does not always mean the door is fully closed.

Old tax errors are easier to deal with before CRA opens a formal review.

VDP is not only for offshore accounts

Many people associate VDP with offshore bank accounts, foreign real estate, or complex trusts. Those issues can fall within the program, but the scope is much broader.

A disclosure may be considered when a past filing error could result in tax, penalties, or interest. Common examples include:

• Unreported Canadian self-employment income, rental income, or investment income

• Expenses claimed incorrectly or without support

• Payroll errors involving source deductions, CPP, or EI

• GST/HST that was not reported or was underreported

• Late or missing T1135 foreign income verification forms

• Foreign income or foreign assets that were reported incompletely

  
  

The key question is not only whether the amount is large. CRA looks at whether a real error exists, whether penalties or interest may apply, whether the disclosure is complete, and whether CRA has already started action on the same issue.

VDP relief can reduce penalties and part of the interest, but the original tax still has to be paid.

That distinction is critical. A voluntary disclosure is a correction process, not a tax holiday.

CRA contact does not always end the chance to apply

The biggest source of confusion under the 2025 framework is what happens after CRA has already contacted the taxpayer.

If CRA sent an educational letter, reminder letter, or general notice about possible non-compliance, but has not started a formal audit or investigation into the same issue, the taxpayer may still have room to apply. CRA may treat that filing as a Prompted Disclosure.

That does not mean the application will receive the same relief as a fully voluntary filing. It usually means the relief is more limited than for an Unprompted Disclosure.

The stronger position is still to act before CRA contact. An Unprompted Disclosure generally means the taxpayer came forward before CRA gave any direct or indirect prompt about the non-compliance.

The real barrier is more serious CRA action. If CRA has already started an audit or investigation into the same issue involving the taxpayer, a corporation, a partnership, or a related taxpayer, the application will usually fail the voluntariness requirement.

The nature of the CRA letter matters. A reminder is not the same as a formal audit letter. Still, the line can be unclear. Anyone who receives CRA correspondence should read it carefully for:

• The tax type involved

• The tax years or reporting periods listed

• The documents requested

• Whether the letter refers to an audit, examination, investigation, or review

• Whether the issue matches the potential VDP disclosure

  
  

CRA letters should be reviewed before deciding whether VDP is still available.

The five conditions CRA generally looks for

VDP is not automatic. Submitting Form RC199 does not guarantee relief. CRA reviews whether the application meets the program’s conditions.

Condition	What it means in practice
Timely submission	The application must be made before CRA starts an audit or investigation on the same issue.
Complete disclosure	The taxpayer must include all relevant years, reporting periods, facts, and documents.
Possible penalty or interest	The error must involve an issue that could lead to penalties or interest.
Past due filing	The filing deadline has usually passed by at least one year or one reporting period.
Tax payment plan	The taxpayer must pay estimated tax owing or discuss an acceptable payment arrangement with CRA.

Completeness often decides the strength of the application. For example, if someone failed to report self-employment income for several years, they should not disclose only one year and leave the rest for later. Selective disclosure can damage credibility and may affect whether CRA grants relief.

What to prepare before filing

A VDP application usually includes a completed and signed Form RC199, along with the corrected returns, schedules, and supporting documents. The exact package depends on the error.

For unreported income, the file may include bank records, invoices, customer payment records, and amended personal or corporate tax returns.

For GST/HST issues, CRA may need sales records, input tax credit support, and corrected GST/HST returns.

For payroll issues, the file may include payroll registers, T4 information, CPP and EI calculations, and source deduction records.

For a late or missing T1135, the taxpayer may need foreign asset details, account records, holding periods, and cost information.

The lookback period can vary. As a general practice, foreign income or asset issues often involve up to the last 10 years. Domestic income or asset issues often involve up to the last six years. GST/HST issues often focus on the last four years. Years with no error usually do not need to be included.

Applications can be submitted through CRA online services, including My Account, My Business Account, and Represent a Client. They can also be filed by fax or mail.

A complete VDP file needs records that support the correction.

How the 2025 rule change affects relief

The 2025 distinction between Unprompted and Prompted disclosures mainly affects the level of relief available.

An Unprompted Disclosure is generally the better category. It reflects a taxpayer coming forward before CRA contact. This usually gives the strongest chance of penalty relief, partial interest relief, and prosecution protection related to the disclosed issue.

A Prompted Disclosure may still be possible after certain CRA contact, such as a reminder or educational nudge. The key is that CRA must not have started a formal audit or investigation on the same matter. Relief in this category is generally more limited.

This change is practical. It recognizes that not every CRA letter is the same. At the same time, it rewards taxpayers who correct problems before CRA has to push harder.

For anyone dealing with an old filing error, the safest path is to move quickly, gather the full facts, and avoid partial fixes. Waiting can turn a manageable disclosure into an audit file.

Voluntary disclosure works best when the correction is complete and timely.

The practical takeaway

The CRA Voluntary Disclosures Program in 2025 gives taxpayers a structured way to correct past mistakes, but timing and completeness matter. Unprompted disclosures usually offer better relief. Prompted disclosures may still be possible after limited CRA contact, but not after CRA has started a formal audit or investigation into the same issue.

If an old return, GST/HST filing, payroll account, or foreign reporting form looks wrong, do not assume the amount is too small to matter. Review the facts, identify every affected year, estimate the tax owing, and prepare a complete disclosure before CRA action narrows the options.

This article is for general information only and is not legal or tax advice. For a real VDP decision, professional review is important because the wording of CRA letters, the relationship between taxpayers, and the timing of the filing can all change the result.