Mississauga, Ontario — Serving All of the GTA

Trusted Accountants in Mississauga, Ontario

Professional tax, accounting, bookkeeping and payroll services for individuals, small businesses and corporations in Mississauga and across Ontario. BOMCAS Canada Accounting Firm — your local CPA experts.

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Speak with a Mississauga accountant today. No obligation.

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CPA Qualified Professionals
CRA Authorized Representatives
5-Star Rated Mississauga Firm
Fast Turnaround & Deadlines Met
100% Confidential
Serving All of Ontario

Comprehensive Accounting & Tax Services in Mississauga

From personal tax returns to corporate accounting, payroll, bookkeeping, and CRA representation — BOMCAS Canada delivers expert financial services to individuals and businesses throughout Mississauga and Ontario.

Personal Tax Accountant Mississauga

Expert personal income tax preparation and filing for Mississauga residents. Maximize your refund with our CPA-reviewed returns. We handle T1 returns, employment income, RRSP, investments, rental properties, and more.

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Corporate Tax Accountant Mississauga

Full-service corporate tax accounting for Mississauga businesses. T2 corporate tax returns, tax planning, year-end accounting, and CRA compliance for small to medium-sized corporations in Ontario.

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Bookkeeping Services Mississauga

Accurate, timely bookkeeping for Mississauga small businesses. Monthly reconciliation, accounts payable/receivable, financial reporting, QuickBooks Online, Xero, and Sage cloud accounting setup and support.

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Payroll Services Mississauga

Complete payroll processing, remittances, T4/T4A filing and CRA payroll compliance for businesses in Mississauga. We ensure your payroll is accurate, timely, and fully compliant with Ontario employment standards.

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GST/HST Filing Mississauga

Professional GST/HST preparation and filing for Ontario businesses. We handle registration, quarterly and annual returns, input tax credits, and CRA HST audits for Mississauga businesses of all sizes.

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Late & Back Tax Filing Mississauga

Behind on your tax returns? Our Mississauga accountants specialize in late and back tax filing services. We prepare and file multiple years of outstanding CRA returns, negotiate penalties, and get you back in good standing.

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CRA Audit Representation Mississauga

Facing a CRA audit? Our experienced Mississauga accountants provide full CRA audit representation. We communicate directly with CRA, prepare documentation, and defend your position professionally.

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Small Business Accounting Mississauga

Dedicated accounting services for Mississauga small businesses. From startup accounting and incorporation advisory to ongoing bookkeeping, tax planning, and financial reporting tailored to your business stage.

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Tax Planning Services Mississauga

Proactive tax planning strategies for Mississauga individuals and businesses. Minimize your tax burden legally with corporate restructuring, income splitting, RRSP optimization, capital gains planning and more.

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Why Mississauga Businesses & Individuals Choose BOMCAS Canada

Accountants Mississauga is a trusted accounting brand of BOMCAS Canada Accounting Firm, delivering professional tax, accounting, bookkeeping, and payroll services to individuals, small businesses, corporations, and non-profits throughout Mississauga, the Greater Toronto Area, and all of Ontario.

Our team of CPA-qualified professionals brings deep knowledge of the Canadian tax system, CRA requirements, and Ontario business regulations. Whether you're a first-time tax filer, a growing corporation, or a business owner facing CRA challenges, we provide expert guidance and personalized service to achieve the best possible outcome.

We combine local Mississauga expertise with province-wide reach — serving clients in Toronto, Brampton, Oakville, Burlington, Hamilton, and more than 40 Ontario cities.

CPA-Qualified Team

All engagements handled by certified, experienced Canadian accounting professionals.

Local Mississauga Expertise

Deep knowledge of the Mississauga and GTA business environment, CRA offices, and Ontario tax nuances.

CRA Authorized Representatives

We deal directly with CRA on your behalf for audits, disputes, and correspondence.

Personalized Service

No cookie-cutter solutions. Every client receives a tailored plan and dedicated accountant.

Deadline-Focused

We track all CRA deadlines and ensure your returns and filings are always on time.

Competitive & Transparent Pricing

Clear, upfront pricing with no hidden fees. Affordable professional accounting for every budget.

Accountants Mississauga by the Numbers

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Clients Served Across Ontario
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Our Simple 4-Step Process

Getting started with Accountants Mississauga is fast and easy. We guide you through every step.

1

Book Free Consultation

Call, email, or fill out our online form to schedule your no-obligation free consultation with a Mississauga accountant.

2

Share Your Documents

Securely share your financial documents, tax slips, and records with our team. We accept electronic and physical documents.

3

We Prepare Your File

Our CPA-qualified team reviews, prepares, and optimizes your tax return or accounting file for accuracy and maximum benefit.

4

Review & File

We walk you through the results, answer questions, and file electronically with CRA. You receive your confirmation immediately.

Accountants in Mississauga, Ontario

Mississauga is Ontario's third-largest city and a major business hub in the Greater Toronto Area. Accountants Mississauga by BOMCAS Canada is your local accounting partner, providing expert tax preparation, corporate accounting, bookkeeping, and payroll services to individuals and businesses throughout Mississauga — from Port Credit and Lakeview to Meadowvale, Erin Mills, and Streetsville.

Whether you need a personal tax accountant in Mississauga for your T1 return, a corporate accountant for your incorporated business, or help resolving CRA issues, our team is ready to help. We understand the unique tax challenges faced by Mississauga's diverse community, including new immigrants, self-employed professionals, real estate investors, and small business owners.

What Our Mississauga Clients Say

Trusted by over 1,500 individuals and businesses across Mississauga and Ontario. Here's what our clients say about working with BOMCAS Canada.

"BOMCAS Canada's accounting team in Mississauga saved my small business thousands in taxes. They handled our corporate year-end, payroll, and GST/HST filing with incredible professionalism. Highly recommend for any Mississauga business!"

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Raj P.
Small Business Owner, Mississauga

"I had 3 years of unfiled taxes and was worried about CRA penalties. The team at Accountants Mississauga resolved everything, filed all my back returns, and even negotiated the penalties. I can sleep again! Amazing service."

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Sarah M.
Self-Employed Professional, Brampton

"As a new immigrant to Mississauga, I had no idea how to file Canadian taxes. BOMCAS Canada walked me through the entire process, explained the credits I qualified for, and got me a great refund. Excellent, patient team!"

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Amara K.
New Resident, Mississauga
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Accounting & Tax Tips for Mississauga Residents

Stay informed with the latest Canadian tax news, accounting tips, and financial advice for Ontario residents and businesses.

Tax tips for Mississauga Ontario residents
Tax Tips

Top Tax Tips for Mississauga, Ontario Residents in 2026

Maximize your tax refund and minimize your tax bill with these essential tips for Mississauga residents filing their Ontario personal income tax return.

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How to file back taxes in Ontario Canada
Late Filing

How to File Back Taxes in Ontario: A Complete Guide

Behind on your taxes? Learn how to file late and back tax returns in Ontario, what CRA penalties apply, and how our Mississauga accountants can help.

May 2026 7 min read
Small business accounting guide Mississauga Ontario
Small Business

Best Accountant for Small Businesses in Mississauga

A guide to choosing the right accountant for your Mississauga small business. What to look for, what to ask, and how BOMCAS Canada can help you grow.

May 2026 6 min read
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Frequently Asked Questions – Accountants Mississauga

Answers to the most common questions about our accounting and tax services in Mississauga, Ontario.

We offer a comprehensive range of accounting and tax services in Mississauga, including personal tax returns (T1), corporate tax returns (T2), bookkeeping, payroll processing, GST/HST filing, CRA audit representation, financial statement preparation, tax planning, late tax filing, and business advisory services. We serve individuals, self-employed professionals, small businesses, corporations, and non-profits across Mississauga and Ontario.

Getting started is simple. You can call us at 780-667-5250, email info@bomcas.ca, or fill out our online contact form to book a free, no-obligation consultation with one of our Mississauga accountants. We will assess your needs and recommend the most suitable services for your situation.

Yes. We specialize in late and back tax filing services for Ontario residents and businesses. Whether you are one year or many years behind on your CRA filings, our Mississauga tax accountants will prepare and submit your outstanding returns, calculate any penalties and interest owed, and where possible, help you apply for CRA penalty relief through the Voluntary Disclosure Program (VDP).

Absolutely. Our corporate tax accountants in Mississauga provide full T2 corporate tax return preparation, year-end accounting, corporate tax planning, CRA corporate compliance, and business advisory services for incorporated businesses of all sizes throughout Mississauga, the GTA, and Ontario.

Yes. While Mississauga is our primary service area, BOMCAS Canada serves clients across the Greater Toronto Area — including Toronto, Brampton, Oakville, Burlington, Vaughan, Markham, Hamilton — and throughout all of Ontario, including Ottawa, London, Windsor, Barrie, Kitchener, and more. We offer virtual accounting and tax services for clients across Canada.

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Contact a Mississauga Accountant Today

Ready to get started? Contact BOMCAS Canada for a free, no-obligation consultation. We're here to help with all your accounting, tax, and financial needs.

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Phone

780-667-5250

Primary Service Area

Mississauga, Ontario, Canada

Office Hours

Mon–Fri: 9:00 AM – 6:00 PM

Ready to Work With Mississauga's Trusted Accounting Firm?

Get expert tax, accounting, bookkeeping and payroll services from BOMCAS Canada. Serving Mississauga, GTA and all of Ontario.