Insights

Dec 5, 2025

Mackisen

TAX DEADLINE CALENDAR FOR BUSINESSES AND INDIVIDUALS: MONTREAL CPA FIRM NEAR YOU

Understanding key tax deadlines is crucial for compliance, avoiding penalties, and ensuring smooth financial operations. Montreal businesses and individuals can greatly benefit from having a structured tax calendar that outlines important dates for filings, payments, and submissions.

Federal and Provincial Filing Deadlines
Canadian businesses must meet both CRA and Revenu Québec deadlines. Montreal CPAs are well-versed in these timelines, helping clients navigate federal and provincial requirements. Missing deadlines can lead to interest charges, late-filing penalties, and potential audits.

Individual Tax Deadlines
For individuals, the most common deadline is April 30 for filing personal income tax returns, while self-employed individuals have until June 15 to file. Montreal CPAs provide reminders, support documentation preparation, and ensure all deductions and credits are properly claimed.

Corporate Tax Deadlines
Corporations have a filing deadline six months after their fiscal year-end. Montreal CPAs help businesses calculate accurate dates, prepare financial statements, and submit T2 returns on time, ensuring compliance with both federal and provincial requirements.

Quarterly Instalments for Businesses
Many businesses must remit tax instalments quarterly. Montreal CPAs guide companies in calculating accurate amounts, scheduling payments, and maintaining cash flow to meet instalment obligations without stress or penalty.

GST/HST and QST Filing Dates
Businesses collecting GST/HST and QST must file monthly, quarterly, or annually depending on revenue thresholds. Montreal CPAs provide schedules for filing and remittance, preventing late fees and ensuring correct input tax credits are claimed.

Payroll Remittance Deadlines
Employers must remit payroll deductions for income tax, CPP/QPP, EI, and QPIP according to CRA and Revenu Québec schedules. Montreal CPAs assist in preparing accurate payroll records, calculating deductions, and submitting on time to avoid fines.

Year-End Tax Planning
Montreal CPAs help businesses plan for year-end taxes, including adjusting expenses, reviewing deductions, and ensuring that all transactions are properly documented to minimize liabilities. Early planning ensures deadlines are met with minimal stress.

Importance of Recordkeeping
Accurate records are essential to meet deadlines and support filings. Montreal CPAs advise on maintaining organized financial statements, receipts, invoices, and supporting documents to streamline the filing process and avoid complications during audits.

Tax Payment Options
Montreal CPAs explain payment methods, including online banking, CRA My Payment, pre-authorized debit, and cheques. Understanding these options helps businesses and individuals make timely payments and prevent unnecessary penalties.

Understanding Penalties and Interest
Missing a tax deadline can result in penalties and interest on outstanding amounts. Montreal CPAs educate clients on these risks and strategies to avoid them, including setting up reminders and maintaining adequate cash reserves.

Tax Calendar Tools and Technology
Using digital tools such as accounting software and online calendars, Montreal CPAs help businesses automate reminders for key dates, streamlining compliance and reducing the risk of missed deadlines. Cloud-based systems also provide real-time updates and alerts.

Dealing with Extensions
Sometimes extensions are necessary due to unforeseen circumstances. Montreal CPAs guide clients in requesting extensions, understanding eligibility, and preparing documentation to avoid penalties while maintaining compliance.

Coordinating Multiple Filings
Businesses with multiple entities, employees, or revenue streams face complex filing requirements. Montreal CPAs coordinate deadlines for corporate tax, payroll, sales tax, and other obligations to ensure comprehensive compliance without overlaps or missed submissions.

Planning Around Holidays and Weekends
Deadlines falling on weekends or holidays may shift. Montreal CPAs monitor these changes and advise clients on adjusted schedules, ensuring timely filings and payments even during busy periods.

Preparing for Audits During Deadline Periods
Deadline periods can coincide with audits or reviews. Montreal CPAs help clients maintain audit-ready records, prepare documentation, and provide strategic advice to address inquiries while meeting filing deadlines.

Communication with Tax Authorities
Montreal CPAs maintain professional communication with CRA and Revenu Québec, addressing questions, clarifying requirements, and ensuring all submissions meet regulatory standards. This proactive approach reduces risks associated with late or incorrect filings.

Integrating Tax Planning with Business Strategy
By aligning tax deadlines with strategic planning, Montreal CPAs help businesses make timely financial decisions, optimize cash flow, and plan for investments. Proper coordination enhances both compliance and long-term financial performance.

Annual Review and Updates
Tax rules and deadlines can change annually. Montreal CPAs review calendars each year to reflect new regulations, deadlines, and tax incentives, ensuring clients always operate with accurate and up-to-date information.

Why Choose Mackisen
Mackisen provides Montreal businesses and individuals with expert guidance on tax deadlines, filings, and compliance. Our CPAs ensure accurate preparation, timely submissions, and proactive planning to minimize risk. Choosing Mackisen guarantees peace of mind, professional support, and optimized financial management for your business or personal finances.

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