How to Register for Revenu Québec’s “Mon Dossier” to Manage QST — Montreal CPA Firm Near You

Introduction
Registering for Revenu Québec’s “Mon Dossier pour les entreprises” is essential for managing your QST (Quebec Sales Tax), payroll, and corporate filings online. This secure portal allows Quebec business owners to file returns, make payments, view account balances, track refunds, and communicate directly with Revenu Québec all in one place.

At Mackisen CPA Montreal, we help entrepreneurs and corporations set up their Mon Dossier accounts properly to ensure smooth QST compliance, fast refund processing, and secure correspondence with Revenu Québec. This step-by-step guide explains how to register for Mon Dossier, link your QST number, and manage your business taxes efficiently.

Legal and Regulatory Framework
Electronic filing and account access for businesses in Quebec are governed by:

• Taxation Act (Quebec) s.407 — requires QST registrants to report and remit tax electronically.

• Tax Administration Act (Quebec) s.34 — mandates preservation of all electronic records and communication for six years.

• Tax Administration Act s.37 — confirms Mon Dossier as an official filing channel for Revenu Québec.

• Revenu Québec Electronic Services Policy (2020) — sets authentication and privacy standards for Mon Dossier users.

These provisions make Mon Dossier the official online management system for QST, ensuring accuracy, speed, and compliance.

Step-by-Step: How to Register for Revenu Québec’s “Mon Dossier pour les entreprises”

1. Confirm Your Eligibility
   You can register for Mon Dossier if:

   • Your business is located in Quebec or conducts taxable activities in the province.

   • You have a valid NEQ (Quebec Enterprise Number) or Revenu Québec file number.

   • You are an authorized representative (owner, director, or accountant).

   For out-of-province businesses registered under the Simplified QST System, registration is done through a separate portal (see Simplified QST Registration).

2. Gather Required Information
   Before registering, have the following ready:

   • NEQ (Numéro d’entreprise du Québec) or QST number (TQ...).

   • Business legal name and address.

   • Date of registration for QST.

   • Your Social Insurance Number (SIN) or Revenu Québec access code (for proprietors).

   • Contact information for the business representative.

3. Access the Revenu Québec Website

   • Go to http://www.revenuquebec.ca/mon-dossier.

   • Click “Mon dossier pour les entreprises”.

   • Choose “Register” to create a new account.

4. Authenticate Using ClicSÉQUR

   • Revenu Québec uses ClicSÉQUR, the official Quebec government authentication system.

   • Choose one of two options:

     • ClicSÉQUR Express — for quick access using a Revenu Québec invitation or code.

     • ClicSÉQUR Regular — full registration with identity verification.

   • Follow the on-screen steps to create your username, password, and security questions.

5. Link Your Business Accounts

   • Once your ClicSÉQUR identity is created, log into Mon Dossier.

   • Under “Add a File,” enter your QST number (TQ...) or NEQ.

   • Confirm your business details match Revenu Québec’s records.

   • You’ll then gain access to your QST filing, payment, and account balance dashboard.

6. Set Up Direct Deposit and Notifications

   • In the “Profile” section, register your business bank account for QST refunds and payments.

   • Enable email notifications to receive filing reminders and correspondence notices.

7. Manage QST Online
   Through your Mon Dossier account, you can:

   • File and amend QST returns (FPZ-500-V).

   • View and print Notices of Assessment and Statements of Account.

   • Track refund status and payment history.

   • Make QST payments via online banking or pre-authorized debit.

   • Upload supporting documents requested by Revenu Québec.

   • Communicate securely with auditors and client service agents.

Jurisprudence and Legal Insight
Quebec courts recognize Mon Dossier filings as legally binding submissions:

• Lac d’Amiante du Québec Ltée (SCC 2001) — confirmed Revenu Québec’s authority to use electronic communications for tax administration.

• Hickman Motors Ltd. v. Canada (SCC 1997) — taxpayers must provide complete and timely proof of compliance.

• Canderel Ltd. v. Canada (SCC 1998) — all filings must reflect commercial reality, including electronic submissions.

This means that returns and correspondence submitted via Mon Dossier carry the same legal weight as paper filings.

Documentation: Maintain Proof of Access and Filing
To ensure your Mon Dossier records are audit-ready, keep:

• Your ClicSÉQUR registration confirmation.

• Revenu Québec’s Mon Dossier activation email or letter.

• Copies of filed QST returns and payment confirmations.

• Bank proof of refunds or remittances.

• Screenshots of your account dashboard showing filing dates.

At Mackisen CPA Montreal, we create a Digital Compliance Binder for every client storing Mon Dossier records securely for six years under Tax Administration Act s.34.

How Revenu Québec Uses Mon Dossier for Oversight
Through Mon Dossier, Revenu Québec can:

• Monitor QST filings and payments in real time.

• Issue electronic Notices of Assessment or refund verification requests.

• Cross-reference data with CRA’s GST system.

• Identify late or missing filings automatically.

Consistent use of Mon Dossier helps prevent administrative delays and ensures transparency in your QST compliance.

Winning With Revenu Québec
At Mackisen CPA Montreal, we ensure your Mon Dossier account works as a tool for compliance and efficiency:

1. Registration Assistance – We complete your ClicSÉQUR and Mon Dossier setup from start to finish.

2. Account Integration – We connect your accounting software for automatic QST data synchronization.

3. Ongoing Management – We track filings, payments, and refunds monthly.

4. Audit Defense – Our CPA auditors and tax lawyers handle all Revenu Québec correspondence through your Mon Dossier account.

5. Penalty Protection – If filing delays occur, we request relief under Tax Administration Act s.94.1.

Mackisen Service Hub: Full QST Management and Compliance
Our Mackisen Service Hub provides all-in-one tax management through Mon Dossier, including:

• Account registration and setup.

• QST filing, refund tracking, and payment management.

• Secure document upload and archiving.

• Direct representation before Revenu Québec.

Our bilingual CPA auditors, tax lawyers, and compliance specialists graduates of McGill, Université de Montréal, and Concordia University deliver expert guidance to make your Mon Dossier experience efficient and stress-free.

Real Client Example
A new Montreal retailer manually mailed QST payments, causing delayed processing and interest charges. Mackisen CPA registered their Mon Dossier account, enabled pre-authorized debit for payments, and automated FPZ-500-V filings. The business eliminated penalties and now tracks all refunds and correspondence in real time.

Why Mackisen
With over 35 years of combined CPA and legal experience, Mackisen CPA Montreal ensures your Mon Dossier setup and QST compliance are seamless, secure, and fully optimized.

When you register with Mackisen, managing QST becomes effortless you gain control, transparency, and professional oversight that keeps your business compliant and audit-ready at all times.