Corporate Tax Accounting Services for Mississauga, Ontario Businesses
If your business is incorporated in Ontario, you are required to file a T2 Corporation Income Tax Return with the Canada Revenue Agency (CRA) every year, regardless of whether your corporation earned income or not. Navigating corporate tax law — with its complex deductions, credits, deadlines and CRA compliance requirements — demands the expertise of a qualified corporate tax accountant in Mississauga.
Accountants Mississauga by BOMCAS Canada provides comprehensive corporate tax accounting services to small, medium and large corporations throughout Mississauga, the Greater Toronto Area, and all of Ontario. Our CPA-qualified corporate tax accountants have deep experience with Ontario corporate taxation, federal T2 preparation, and strategic corporate tax planning that goes well beyond basic return filing.
Our Corporate Tax Services in Mississauga
T2 Corporate Income Tax Return Preparation
Accurate, CPA-reviewed T2 returns filed electronically with CRA. We maximize all eligible deductions and credits for your Mississauga corporation.
Corporate Year-End Accounting
Complete year-end accounting packages including financial statements, T2 return, and all supporting schedules required by CRA.
Corporate Tax Planning
Proactive strategies to minimize your Ontario corporation's tax burden — salary vs. dividends, capital gains, CCA, loss utilization and more.
Small Business Deduction (SBD) Optimization
Ensure your corporation maximizes the Small Business Deduction on the first $500,000 of active business income to benefit from the lower tax rate.
CRA Corporate Audit Representation
Full support during CRA corporate audits — documentation, correspondence, objections and dispute resolution on behalf of your Mississauga business.
Holding Company & Corporate Structure Advisory
Strategic advice on holding company structures, inter-corporate dividends, and income splitting between family members for Ontario corporations.
Corporate Tax Instalment Planning
Calculation and planning of quarterly corporate tax instalments to avoid CRA instalment interest charges for your Mississauga corporation.
Scientific Research & Experimental Development (SR&ED)
SR&ED tax credit identification and claim preparation for Mississauga businesses engaged in eligible research and development activities.
Ontario Corporate Tax Rates – What Mississauga Businesses Need to Know
Understanding Ontario's corporate tax structure is essential for effective tax planning. Here's a summary of the key rates applicable to Mississauga corporations:
| Corporation Type / Income Type | Federal Rate | Ontario Rate | Combined Rate |
|---|---|---|---|
| Small Business (SBD eligible, up to $500K active income) | 9% | 3.2% | 12.2% |
| General Business (income above SBD limit) | 15% | 11.5% | 26.5% |
| Investment Income (passive income in corporation) | 38.67% | 11.5% | 50.17% |
| Capital Gains (50% inclusion rate) | Varies | Varies | ~13.25% effective |
* Rates are approximate and subject to change. Ontario's Small Business Deduction limit may be reduced for corporations with passive income over $50,000. Contact our Mississauga corporate tax accountants for accurate figures for your specific situation.
Key Corporate Tax Deductions for Mississauga Businesses
One of the most valuable roles a corporate tax accountant in Mississauga plays is identifying every legitimate deduction available to your corporation. Common corporate tax deductions include:
- Salaries, wages and bonuses paid to employees and shareholders
- Rent for business premises in Mississauga or across Ontario
- Capital Cost Allowance (CCA) on depreciable business assets
- Business-use vehicle expenses and CCA
- Professional fees — accounting, legal and consulting costs
- Marketing, advertising and business development expenses
- Home office expenses for qualifying home-based Ontario businesses
- Interest on business loans and financing costs
- Business insurance premiums
- Meals and entertainment (50% deductible)
- Employee benefits and group insurance premiums
- Research and development (SR&ED) expenditures
- Charitable donations made by the corporation
Corporate Tax Deadlines for Ontario Corporations
Missing CRA corporate tax deadlines results in penalties and interest. Our Mississauga corporate tax accountants track all filing and payment deadlines:
- T2 Return Filing Deadline: 6 months after fiscal year-end (e.g., December 31 year-end = June 30 deadline)
- Corporate Tax Balance Due: 2 months after fiscal year-end (3 months for eligible small business corporations)
- Quarterly Tax Instalments: Due on the last day of each quarter if required by CRA
- T4/T4A Slips: February 28 of the following year
- GST/HST Annual Return: 3 months after fiscal year-end for annual filers
Why Choose Accountants Mississauga for Corporate Tax?
- CPA-qualified corporate tax accountants with Ontario-specific expertise
- Authorized CRA representatives — we deal directly with CRA on your behalf
- Proactive year-round tax planning, not just year-end filing
- Fast turnaround — we respect your corporate deadlines
- Fixed, transparent pricing — no surprise bills
- Serving Mississauga, GTA and all Ontario corporations
- Virtual services available — securely share documents online
FAQs – Corporate Tax Accountant Mississauga
The T2 corporate income tax return is due 6 months after the end of your fiscal year. However, any corporate taxes owing are due within 2–3 months after the fiscal year-end (depending on whether you qualify as a small business corporation). Our Mississauga corporate tax accountants track all deadlines so you are never late.
Ontario corporations eligible for the Small Business Deduction (SBD) pay a combined federal and Ontario corporate tax rate of approximately 12.2% on the first $500,000 of active business income. Income above the SBD limit is taxed at approximately 26.5% (combined federal + Ontario). Our Mississauga tax accountants will ensure you claim every deduction available.
Yes. Bookkeeping and corporate tax preparation are separate services. Your bookkeeper records transactions; your corporate tax accountant uses those records to prepare the T2 return, maximize tax credits, perform tax planning, and ensure full CRA compliance. BOMCAS Canada provides both services for Mississauga businesses.
Absolutely. Our Mississauga corporate tax accountants provide proactive year-round tax planning — including salary vs. dividend analysis, capital cost allowance optimization, loss carry-forwards, corporate restructuring, holding company strategies, and more. Tax planning often saves far more than the cost of the service.
If your T2 corporate tax return is filed late, CRA charges a penalty of 5% of the taxes owing plus 1% per complete month late (up to 12 months) for a first offence. Our Mississauga corporate accountants ensure your returns are always filed on time and can also assist with penalty relief applications if you have already missed a deadline.
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Get Your Corporate Tax Filed by Mississauga Experts
Don't leave your corporate tax return to chance. Contact Accountants Mississauga by BOMCAS Canada today for a free, no-obligation consultation. We serve corporations in Mississauga, the GTA, and all of Ontario — in person and virtually.