Ontario Accounting & Tax Services

Ontario is Canada’s most populous province and the economic engine of the country, home to the nation’s financial capital in Toronto, a world-class technology sector, and a vast manufacturing base. BOMCAS Canada serves Ontario businesses and individuals with expert accounting, tax, and bookkeeping services tailored to the province’s complex regulatory environment.

59
Cities & Communities Served

6
Service Types Available

CPA
Certified Professionals

Find an Accountant in Your Ontario City

BOMCAS Canada serves 59 cities and communities across Ontario. Click your city below to find accounting, tax, and bookkeeping services near you.

Agincourt North

Ajax

Ajax Ontario

Alliston

Amherstburg

Ancaster

Aurora

Aylmer

Barrie

Belleville

Bolton

Bowmanville

Bracebridge

Brampton

Brantford

Burlington

Burlington Ontario

Cambridge

Cambridge Ontario

Collingwood

Etobicoke

Guelph

Hamilton

In Toronto

Kingston

Kitchener

London

London Ontario

Markham

Midland

Mississauga

Newmarket

Newmarket Ontario

North Bay

North York

Oakville

Orangeville

Orillia

Oshawa

Ottawa

Peterborough

Peterborough Ontario

Pickering

Pickering Ontario

Richmond Hill

Scarborough

St Catharines

Sudbury

Sudbury Ontario

Thunder Bay

Toronto

Vaughan

Waterloo

Waterloo Ontario

Whitby

Whitby Ontario

Windsor

Windsor Ontario

Woodstock

Accounting & Tax Services Across Canada

BOMCAS Canada serves businesses and individuals in every province and territory. Explore our services across Canada:

Professional Accounting & Tax Services Across Ontario

Ontario’s economy is the largest in Canada, driven by financial services, technology, manufacturing, real estate, and professional services. Whether you are a corporation in Toronto, a small business in Ottawa, or an individual taxpayer in Hamilton, BOMCAS Canada provides comprehensive accounting and tax services designed for Ontario’s specific regulatory environment.

Our team of Chartered Professional Accountants understands Ontario’s HST system, provincial income tax rates, the Ontario small business deduction, and the specific credits and deductions available to Ontario businesses and residents.

Why Ontario Businesses Choose BOMCAS Canada

Ontario businesses face a complex tax environment, with HST, employer health tax (EHT), corporate income tax, and a range of industry-specific regulations. BOMCAS Canada helps Ontario businesses navigate this complexity with confidence, providing expert guidance on compliance, tax minimisation, and financial planning.

Our Ontario clients include technology companies, financial services firms, real estate developers and investors, manufacturing businesses, professional corporations, and high-net-worth individuals. We bring deep expertise in Ontario-specific tax issues, including the treatment of stock options, real estate transactions, and the Ontario small business deduction.

Personal Tax Services in Ontario

Ontario residents face some of the highest combined federal and provincial income tax rates in Canada, making proactive tax planning essential. BOMCAS Canada’s personal tax specialists help Ontario individuals minimise their tax burden through strategic RRSP and TFSA planning, income splitting, capital gains management, and the identification of all eligible deductions and credits.

Corporate Tax Accounting in Ontario

BOMCAS Canada provides full-cycle corporate tax services for Ontario corporations, including T2 return preparation, tax minimisation strategies, dividend planning, and corporate reorganisations. We work with Ontario corporations across all industries, from technology startups to real estate holding companies and professional corporations.

Bookkeeping Services for Ontario Businesses

BOMCAS Canada provides professional bookkeeping services for Ontario businesses of all sizes, using QuickBooks, Xero, and other leading platforms. Our services include accounts payable and receivable, bank reconciliations, payroll processing, HST filings, and monthly financial reporting.

Late and Back Tax Filing in Ontario

BOMCAS Canada helps Ontario individuals and businesses get caught up on unfiled tax returns, working with CRA to minimise penalties and ensure full compliance. Our team handles both personal and corporate late filings across Ontario.

Our Core Services in Ontario

Personal Tax Returns

Expert T1 return preparation, RRSP/TFSA optimisation, rental income, capital gains, and all personal tax matters for Ontario residents.

Corporate Tax

Full-cycle T2 corporate return preparation, tax minimisation, dividend planning, and corporate reorganisations for Ontario businesses.

Bookkeeping

Professional bookkeeping, payroll, accounts payable/receivable, and financial reporting for Ontario businesses of all sizes.

Late & Back Tax Filing

Get caught up on unfiled returns. We work with CRA to minimise penalties and get you back in good standing across Ontario.

Accounting Services

Comprehensive accounting, financial statement preparation, audit support, and advisory services for Ontario businesses.

Business Advisory

Strategic financial planning, business structuring, succession planning, and growth advisory for Ontario entrepreneurs.

Why Choose BOMCAS Canada for Your Ontario Accounting Needs?

BOMCAS Canada is a nationally recognised accounting and tax firm with deep expertise serving Ontario businesses and individuals. Our team of Chartered Professional Accountants (CPAs) brings decades of combined experience, combining the expertise of a large firm with the personalised service of a local practice — delivering tailored solutions that make a real difference to your financial outcomes.

We serve clients across all 59 communities in Ontario, using a digital-first approach that means geography is never a barrier. Whether you are in Toronto or a smaller community, you receive the same high standard of professional service. Our secure online portal makes it easy to share documents, communicate with your accountant, and access your financial information from anywhere in Ontario.

Our Ontario practice is built on three core principles: expertise, integrity, and results. We stay current with all changes to federal and provincial tax legislation, ensuring that our clients always benefit from the most up-to-date strategies and advice. We are transparent in our fees and our approach, and we measure our success by the financial outcomes we achieve for our clients.

Get Started with BOMCAS Canada in Ontario

Ready to work with a professional accounting and tax firm that truly understands Ontario? Contact BOMCAS Canada today to schedule a consultation. Our team is ready to help you navigate the complexities of Canadian tax law, minimise your tax burden, and build a stronger financial future for you and your business.

Call us at 1-780-667-5250 or visit our contact page to get started. We look forward to serving you across Ontario.