Streamline Your Finances

Modern Accounting for Growing Businesses

Boutique CPA firm providing accounting, assurance, taxation, and advisory services for businesses, professionals, and non-profit organizations across Canada and internationally.

TAX ADVISOR - MEMBER OF CPA ONTARIO - MEMBER OF CPA CANADA -

3

jurisdictions

Outstanding Outcomes

Expert Advice. Practical Results. Long-Term Partnership.

We go beyond the numbers to deliver forward-thinking financial strategies tailored to your business. Our advisory-first approach helps growing companies and professionals make smarter decisions at every stage.
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Assurance & Advisory

From review engagements to internal control recommendations — rigorous, standards-compliant assurance services you can rely on.

Taxation

Corporate, personal, and cross-border tax services for Canada, the United States, and beyond. Strategic planning, CRA representation, and full compliance.

Business Advisory

Cash flow planning, incorporation, profitability analysis, and strategic financial consulting to help your business grow with confidence.

Who We Are

Your Trusted Accounting Partner in Canada and Beyond

R.A. Mirza Professional Corporation is a boutique CPA firm founded by Rizwan Mirza — a Chartered Professional Accountant with designations in Canada, the United States, and the United Kingdom. With deep expertise across accounting, taxation, assurance, and advisory services, we bring international perspective and personalized attention to every client relationship.

We work closely with growing businesses, professionals, non-profit organizations, and cross-border clients who want more than a tax filing — they want a trusted financial partner who understands their goals.

30+

Years of Experience

Join Us | Boutique CPA firm serving clients across Canada and internationally

Our Services

Comprehensive Accounting Services

A full suite of professional services to support your business at every stage of growth.

Let’s Work Together

Why Choose Us?

We combine the technical depth of a large accounting practice with the personalized attention you can only get from a boutique firm. Here is why growing businesses and professionals choose R.A. Mirza Professional Corporation.

Rizwan Mirza holds professional accounting designations in Canada (CPA, CA and CGA), the United States (CPA, Colorado), and the United Kingdom (ACCA) — giving clients access to cross-border tax and advisory expertise that most local firms simply cannot offer.

We do not just file returns and close the file. We take the time to understand your business, identify opportunities, and provide practical advice that helps you grow, plan ahead, and avoid costly surprises.

As a boutique firm, every client works directly with Rizwan. There are no handoffs to junior staff. You get consistent, senior-level attention — and a professional who genuinely knows your business.

From construction and healthcare professionals to non-profit organizations and technology startups, we bring specialized knowledge to the industries we serve — so our advice is always relevant, not generic.

Delivering Excellence Through Expertise and Dedication

90%

Increased Profitability

Through strategic financial planning and detailed analysis.

70%

Tax Savings

Saving our clients thousands of dollars each year.

Loved by Our Clients

What Our Clients Say

Our commitment to delivering exceptional accounting services is reflected in the feedback we receive from our valued clients.

Join Us | Boutique CPA firm serving clients across Canada and internationally

John S.

CEO & Founder - Okler

The team at Porto has been invaluable to my business. They have consistently provided expert advice and helped us navigate through complex tax regulations. Their attention to detail and commitment to customer service are second to none. I highly recommend their services to any business owner looking for reliable accounting support.

Emily T.

Small Business Owner

I was overwhelmed with the financial side of my business, but Porto made everything so much easier. They helped me set up my accounts, manage my taxes, and plan for the future. The peace of mind they have given me is priceless. I couldn't be happier with their service.

Michael K.

Entrepreneur

Working with Porto has been a game-changer for my startup. They took the time to understand my business needs and tailored their services accordingly. Their expertise and proactive approach have been crucial in helping my business grow. I truly feel like they are a partner in my success.

Trusted Expertise. Delivered Personally.

At R.A. Mirza Professional Corporation, we believe accounting is about more than compliance — it is about helping you build a stronger, more resilient business. Every engagement begins with listening, understanding your goals, and delivering solutions that are right for you.

Free Quote

Let's Talk About Your Business

Every business is different. Tell us a little about yours and we will be in touch within one business day to schedule a complimentary consultation.

Quick Reply

Usually within one business day.

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    Accounting

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