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How long is the CRA tax preparer record retention period?
CRA tax preparer record retention period is six years from the end of the tax year, with Quebec and GST/HST nuances. Learn what to keep and what happens if you miss.
What to take away
- CRA tax preparer record retention period is six years from the end of the tax year to which the records relate.
- Quebec and GST/HST rules add nuances, and real property records can run longer.
- A missed retention deadline can trigger a reassessment or a preparer penalty under section 163.2.
- Private professional standards may require keeping files beyond the CRA minimum.
The retention period for Canadian tax preparers is not a single number across every province or every type of document. It starts with the federal Income Tax Act, then splits for Quebec, GST/HST, and private professional standards.
Who sets the retention rules
Three layers of rules apply to a Canadian tax preparer. The federal layer is the CRA's six-year requirement under the Income Tax Act. The provincial layer is Revenu Québec, which mirrors that six-year period but adds its own administrative rules.
The private layer includes bodies such as CPA Canada, whose members may face professional conduct standards that require longer retention.
A solid record retention practice also feeds the referral engine inside a tax preparation business because clients trust a preparer who keeps files.
What the CRA six-year rule requires
The CRA requires preparers to keep books and records for six years from the end of the tax year to which they relate. For a client's 2024 T1 return, the tax year ends December 31, 2024, so the six-year period runs until December 31, 2030. You may destroy the record on January 1, 2031, not before.
Six-Year Retention Timeline
- Dec 31, 2024Tax year ends
- Dec 31, 2030Six-year period ends
- Jan 1, 2031Earliest destruction date
This six-year rule applies whether you are a sole proprietor preparer or a firm with multiple preparers. It covers the records that support the client's return, such as slips, receipts, worksheets, and final returns. The CRA can ask to see these records during a compliance review of your practice, not just during a client audit.
Preparers who also register for EFILE have a separate deadline to manage. The CRA EFILE registration deadline is not a retention rule, but it shows how preparer obligations stack up.
Quebec and GST/HST nuances
Revenu Québec generally applies the same six-year period to provincial returns. Quebec corporate records may carry longer retention rules for certain registers.
For GST/HST, the federal rule is also six years. Real property records often must be kept until six years after the end of the year the property is sold. That can outlast a regular return's six-year period by many years.
A preparer in Montreal who handles both T1 and GST/HST files should treat real property records as the long tail. The same applies to records for capital cost allowance claims, where the underlying asset may still be owned years later.
CRA also sets separate preparer obligations such as EFILE registration, and its EFILE electronic filers page details the deadlines.
What records must a preparer keep
Use this checklist for every client file.
Records to Keep Per Client
- Copies of filed T1, T2, GST/HST returns
- All information slipsT4, T5, Relevé 1
- Client identification and authorization forms
- Engagement letters and signed fee agreements
- E-file confirmations and CRA acknowledgment messages
The checklist is not a legal list, but it reflects the categories CRA expects a preparer to have on hand. Private professional standards may also ask for a record of advice given to the client. Tax preparation practice generally includes retention of client documents as part of due diligence, and the tax preparation overview covers engagement letter rules.
A new-hire checklist helps each preparer know which documents to save.
Retention periods by record type
| Record type | Retention period | Authority |
|---|---|---|
| Personal tax return supporting slips | 6 years from end of tax year | CRA |
| GST/HST records for regular filings | 6 years from end of reporting period | CRA |
| Real property purchase and sale records | 6 years after year of sale | CRA |
| Quebec corporate registers | Often longer than 6 years | Revenu Québec |
How to calculate your retention end date
- Identify the tax year end date on the client's return.
- Add six full calendar years to that date.
- For real property or capital assets, extend to six years after the year of sale or disposal.
- Mark the destruction date on the file cover and in your tracking software.
- Do not destroy any file that is under active audit, objection, or appeal.
What happens if you miss the rule
The most concrete risk is a reassessment of the client's return. If the CRA asks for supporting documents and you cannot produce them, the agency may disallow a deduction or credit. That can lead to additional tax for the client and a negligence penalty.
For preparers, the risk is a penalty under section 163.2 of the Income Tax Act.
A preparer who makes or participates in making a false statement can face a penalty equal to the greater of a set amount and the preparer's fee.
This penalty applies even if the client did not intend to evade tax. Retaining records is the first defense against that outcome.
A strong retention practice also supports how a tax preparation business keeps service quality honest, because a complete file lets you explain past decisions to a client.
