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Nov 7, 2025

Mackisen

Registration Requirements and Small Supplier Threshold

Mackisen Consultation Inc. offers a turnkey solution for managing your GST/QST filing (or déclaration TPS/TVQ) so you never have to worry about deadlines or mistakes. Here’s why dozens of companies in Québec turn to Mackisen for business tax compliance:

  • Unmatched Expertise: Mackisen brings 35+ years of experience and a 355+ team of CPAs, auditors, accountants, and tax lawyers all under one roof. When you work with us, you get a dedicated team of experts who specialize in Canadian and Québec tax – we know the ins and outs of Revenu Québec and CRA requirements by heart.

  • Full-Service Convenience: We handle everything related to GST/QST filing – from registration of new businesses, calculating GST and QST for small business invoices, preparing the returns, to submitting them online. Because our firm is full-service, we can also integrate your sales tax filing with bookkeeping, payroll, corporate tax planning, and even audit defense if ever needed. No need to juggle multiple advisors or software.

  •  Fast & Confidential: Tax emergencies? Tight deadlines? We've got you. Our large team allows for fast turnaround – we can prepare and file returns on short notice while maintaining strict confidentiality. With secure digital systems (including Clic Séqur), we ensure your financial data is protected. Your privacy is paramount – all our services are handled with absolute confidentiality and professionalism.

  •  Accuracy & Compliance: Every return we file goes through a rigorous review process. We double-check that all eligible ITCs and ITRs are claimed so you never overpay taxes. We stay up-to-date on the latest tax law changes (like the mandatory e-filing rule in 2024or new QST rules for out-of-province businesses) to keep you 100% compliant. No guesswork, no costly errors.

  •  Bilingual & Client-Focused: Serving Québec businesses means we operate in English or French as needed – all our staff are bilingual. We explain the GST/QST process simply, in plain language (déclaration TPS/TVQ simple) so you always understand what we’re doing and why. Our mission is to build trust through transparency, education, and results.

  •  Proven Trust: Mackisen has 5,000+ satisfied clients and maintains a near-perfect client satisfaction rating. We’ve helped businesses of all sizes – from startups to large enterprises – file GST/QST returns correctly and on time, period after period. Our clients often tell us they "finally have peace of mind about taxes" after coming to Mackisen. We are proud to be Montreal’s most trusted CPA and advisory firm.

Bottom line: When you choose Mackisen, you're not just buying a tax filing service – you're gaining a long-term partner in your business success. We treat your GST/QST obligations as if they were our own, proactively looking for ways to save you money, reduce hassle, and protect your business.

How We Work – Our GST/QST Filing Process

At Mackisen, we follow a proven step-by-step process to make GST/QST filing hassle-free for you. Here’s how our service typically works:

  1. Free Consultation & Needs Assessment: It starts with a free consultation. We discuss your business situation, sales volume, and any past GST/QST filings. For new businesses, we check if you need to register for GST/QST (for example, if you’ve hit the $30,000 sales threshold requiring registration. This initial call or meeting helps us tailor our approach and identify any urgent deadlines (like an upcoming filing due date).

  2. Secure Information Gathering: Next, we gather the data needed to prepare your returns. This can include sales reports, invoices, expense receipts, and prior returns. If you use accounting software for GST/QST tracking (such as QuickBooks, Xero, or Sage), we can work directly with your data exports. We can also set you up on Revenu Québec’s “My Account for businesses” (Mon dossier pour les entreprises) if not already, and obtain the necessary authorizations to act on your behalf.

  3. Calculation of Net Tax: Our tax specialists calculate the GST and QST collected on your sales, then subtract all input tax credits (ITCs) and input tax refunds (ITRs) for the GST/QST you paid on business purchases. We ensure nothing is missed – from office supplies to capital equipment, every eligible tax credit is accounted for. (For example, if you collected $1,000 in GST/QST from customers and paid $800 in GST/QST on your purchases, you would only need to remit the $200 difference, plus any adjustments. If your credits exceed what you collected, you get a refund!) By maximizing your ITCs/ITRs, we help minimize your tax bill or maximize your refund legitimately.Preparing the GST/QST Return: Once calculations are done, we prepare your consolidated GST/HST-QST return (Form FPZ-500-V). Québec is unique in that Revenu Québec administers both the federal GST and provincial QST for most businesses. That means one combined return can cover both taxes, and you can even use a QST refund to offset GST payable (and vice versa), remitting just the difference to Revenu Québec. We complete all required sections of the return, whether it's monthly, quarterly, or annual, ensuring it's error-free and ready to file.

  4. Filing & Submission (Online or Paper): We file your GST/QST return online through secure channels. As of 2024, virtually all businesses must file electronically (via Revenu Québec’s systems) rather than on paper. We use Revenu Québec’s online services (Mon dossier via clicSÉQUR) to submit your return directly, which is fast and reliable. You don’t have to navigate the government website or worry about forms – we handle it. If any payment is due, we coordinate the electronic payment to cover both GST and QST in one transaction. If a refund is expected, we ensure Revenu Québec has the correct info to process it quickly.

  5. Confirmation & Follow-Up: After filing, we provide you with confirmation and a summary of the return filed (sales figures, taxes remitted or refunded). We diarize all future deadlines in our system. No matter your reporting frequency (monthly, quarterly, or annual), we'll send you reminders and assist with the next return so you never miss a due date. We also stand by if Revenu Québec or CRA has any follow-up questions – for instance, if they request additional info, Mackisen will liaise with the tax authorities on your behalf to resolve it promptly.

  6. Ongoing Support & Optimization: Our relationship doesn’t end at filing. We advise you on how to simplify your GST/QST tracking going forward – for example, by setting up proper tax codes in your accounting software or using the Quick Method of accounting if it benefits you. We also keep you updated on any changes (like new tax rules or changes to filing systems). And if you ever fall behind or need to amend a GST/QST return, we can quickly step in to fix the issue (we are experienced in correcting filings and requesting adjustments from Revenu Québec. Think of us as your outsourced “GST/QST department” – always there when you need it.

With this structured approach, Mackisen makes GST/QST filing easy and worry-free. Our clients often remark that what used to take them days of confusion now takes them only minutes to forward us info, and we handle the rest. Next, let’s cover some GST/QST basics every business owner should know (and which we’re happy to handle for you).

GST/QST Filing Basics in Québec (What You Need to Know)

Even when you have professionals managing your filings, it's good to understand the basics of GST and QST in Québec – especially since Quebec’s system has its quirks. Here are some key points (with French terms included for clarity):

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Mackisen refers to Mackisen Global Limited (“MGL”) and its global network of member firms and associated entities collectively constituting the “Mackisen organization.” MGL, alternatively known as “Mackisen Global,” operates as distinct and independent legal entities in conjunction with its member firms and related entities. These entities function autonomously, lacking the legal authority to obligate or bind each other in transactions with third parties. Each MGL member firm and its associated entity assumes exclusive legal accountability for its actions and oversights, explicitly disclaiming any responsibility or liability for other entities within the Mackisen Organization. It is of legal significance to underscore that MGL itself refrains from rendering services to clients.