One Stop Business Solutions

Accounting, tax, and payroll-done right, all year long.

About One Stop Business Solutions
One Stop Business Solutions delivers dependable accounting and tax support for individuals, self‑employed professionals, and growing companies. We help you stay compliant, organized, and confident year‑round with accurate bookkeeping, clear financial reporting, and timely filings. From personal and corporate tax returns to GST/HST, WSIB, payroll (T4/T4A/T5), and CRA audit support, our team streamlines the details so you can focus on running your life or business. Whether you’re registering a new company, setting up accounting software, or catching up on reporting, we provide practical guidance and responsive service.
Stress-Free Taxes & Accounting
From Bookkeeping,Fincial statements,to CRA tax filings-everything under one roof.

Services

Bookkeeping & Financial Reporting

Monthly bookkeeping, reconciliations, and clear financial reports to keep your business organized and decision-ready.

Tax Preparation & E-Filing

Personal (T1), self-employed, and corporate (T2) tax preparation with accurate filing, netfile/e-file, and compliance support.

Payroll Setup & Management

Payroll setup and ongoing processing, including T4, T4A, and T5 preparation to keep employees and CRA requirements on track.

Services Offered

Personal and Corporate Tax returns Accounting and Bookkeeping(Payroll&HST) Business Registration/Consultancy Self Employment Tax returns

Team

Karun Mathurangan CPA CMA

C.E.O

My name is Karun.I am a professional Accountant with CPA and CMA designations.I am also a graduate of CIMA from United Kingdom.I have over 15 years experience in Accounting, Taxation and Finance.I have worked for many large companies such as IHG hotels group, Investors group etc throughout my career.I have been self employed for the last few years and my clients include Residential rental properties and Medical clinics to name a few.Thank you so much for visiting our company website and we look forward to serving your business or personal financial filing needs.Please contact us via messaging feature in this website or through my email at Karun@email-osbs.com

Testimonials

Self-employed consultant

Mohan Rathinthra

They set up my bookkeeping and handled my self-employed taxes flawlessly. Everything was organized, on time, and explained in plain language.

     
Small business owner

Robert Jewett

One Stop Business Solutions managed our corporate tax filing and GST/HST returns with great attention to detail. We feel confident staying compliant year-round.

     
Individual taxpayer

Herman Vijayakumar

When I received a CRA review request, they guided me through every step and responded quickly. It took a huge weight off my shoulders.

     
 
 

Contact

  • 99 Boswell Road, Markham, ON, Canada

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