Launch Your Mississauga Corporate, Subsidiary, and Regional Offices

Detailed Requirements

Here are the specific requirements for starting a corporate, subsidiary, and regional managing offices in Mississauga:

• Business Number (BN) Registration Required
  A 9-digit Business Number is required for most businesses operating in Canada. It is used to interact with the Canada Revenue Agency and other federal programs. Required for GST/HST, payroll, corporation income tax, and import/export accounts. Register FREE online through Business Registration Online (BRO) at canada.ca. Takes 15-30 minutes. As of November 3, 2025, online registration is MANDATORY for new BNs - phone registration no longer available. You'll need: business name, address, owner SIN, business type, and start date. BN (9-digit number) issued INSTANTLY online. Available 21 hours/day, 7 days/week (closed 3-6am ET for maintenance).
• Business Licence Required
  General business licence required to operate a business in City of Mississauga. Apply to City of Mississauga for Business Licence: 1. Determine business category 2. Complete business licence application 3. Submit required documents (ID, lease, zoning confirmation) 4. Pay application and annual fees 5. Await approval and receive licence Contact City of Mississauga Business Licensing for specific requirements. Home-based businesses may have different requirements. Annual renewal required.
• Ontario Business Name Registration (ServiceOntario) Required
  Businesses in Ontario operating under a name other than the owner's legal name must register with Ontario Business Registry through ServiceOntario. This includes sole proprietorships, partnerships, and business names for corporations. Registration provides legal protection for the business name within Ontario and is required for banking, licensing, and business operations. Registration can be completed online through Ontario Business Registry. Business name registrations must be renewed every 5 years. Register business name with Ontario Business Registry: 1. Search Ontario Business Registry (free) for name availability 2. Consider NUANS name report ($25) for thorough search 3. Register online through Ontario Business Registry 4. Pay registration fee ($60 for sole proprietorship/partnership) 5. Receive 9-digit Ontario Business Identification Number (BIN) 6. Registration valid for 5 years 7. Renew before expiry
• Holding and Management Company Registration Required
  Holding and management companies must maintain proper corporate structure, comply with securities regulations if publicly traded, and meet governance standards. No special Ontario license for holding companies. Ontario Business Corporations Act (OBCA) or federal CBCA incorporation. Extra-Provincial License if federally incorporated operating in Ontario. Annual returns required. Professional corporations have separate rules. Contact ServiceOntario: 1-888-745-8888.
• Occupational Health and Safety Act Compliance Required
  All Ontario workplaces must comply with the Occupational Health and Safety Act to ensure safe working conditions. Requirements include workplace safety policies, training, hazard assessments, and incident reporting. No registration - compliance law. Must post OHSA in workplace. JHSC required for 20+ workers (or 6+ in designated industries). Nov 2025: New administrative penalty scheme, defibrillator reimbursement. Telework now covered. Fines: up to $500K individuals, $1.5M corporations. 27 regulations under OHSA. Must conduct safety audits, maintain training records. Contact: 1-877-202-0008.
• Employment Standards Compliance Conditional
  Applies if you have employees. Covers minimum wage, hours of work, vacation pay, public holidays, termination notice, etc. All Ontario employers must comply with the Employment Standards Act, covering minimum wage, hours of work, overtime, vacation, termination, severance, and other workplace rights. No registration required - compliance-based requirement. Follow Employment Standards Act (ESA) for minimum wage, hours of work, overtime, vacation, leaves, and termination. Post ESA poster in workplace (free download from ontario.ca). Keep employment records for 3 years. NEW for 2025: Employers with 25+ staff must provide written employment info to new hires by July 1, 2025. Job postings must include salary ranges by Jan 1, 2026. Call 1-800-531-5551 for help.
• GST/HST Registration Conditional
  Required if annual taxable revenue exceeds $30,000 (small supplier threshold). Taxi/ride-share drivers must register regardless of revenue. Businesses with gross revenues over $30,000 in any single quarter or over four consecutive quarters must register for, collect, and remit GST/HST. Small suppliers (under $30,000) may register voluntarily. Register FREE online through Business Registration Online (BRO) when your revenue exceeds $30,000 in any 4 consecutive quarters (small supplier threshold). Takes 15-30 minutes. You MUST register within 29 days of exceeding threshold and start charging GST/HST immediately on the sale that made you exceed it. Need your BN (or get one simultaneously). As of Nov 3, 2025, online registration is mandatory. Voluntary registration available anytime for input tax credits.
• Payroll Deductions Registration Conditional
  Required if you pay salaries, wages, or other remuneration to employees. Must register before first pay period. Required if you have employees. You must withhold Canada Pension Plan (CPP), Employment Insurance (EI), and income tax from employee wages and remit to CRA. Register FREE online through Business Registration Online (BRO) when you hire your first employee. Takes 15-20 minutes. You'll need your Business Number (BN) or can get one simultaneously. Payroll account (RP) added to your BN instantly. Register BEFORE your first pay date. Required to deduct CPP, EI, and income tax from employee wages. For 2025: CPP rate 5.95%, EI employee rate $1.66/$100 insurable earnings.
• WSIB Registration and Coverage Conditional
  Required within 10 days of hiring first employee, including family members and subcontractors. Workplace Safety and Insurance Board (WSIB) registration is mandatory for most Ontario businesses with employees. Provides compensation and support for workplace injuries and illnesses. Sole proprietors and partners can apply for optional coverage. Register FREE online at wsib.ca in 15-20 minutes. MANDATORY for most Ontario employers within 10 calendar days of hiring first worker. You'll need: CRA Business Number, payroll estimate, business activity description, owner/director info. Account number issued INSTANTLY online. Construction industry has expanded compulsory coverage. Premium rates vary by industry classification. Must display WSIB safety poster in workplace.

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