We’re full-service accountants serving Guelph and the surrounding area.

What we do.

We have a history of doing great work for amazing people. Keith has been operating his practice since 1992, and is the tri-city region's foremost expert on small to mid-sized business accounting. We offer a wide range of accounting and bookkeeping services.


If you have a small business with monthly, annual, or situational accounting needs, we're here to offer our expertise and financial consultation — as well as handling bank reconciliations, monthly controllership functions, and your day-to-day needs.

Income Taxes

We know three things in life are certain: death, taxes, and our exceptional ability to calculate and file your income tax with ease. Every year, we save our clients thousands of dollars and ensure them the best return possible. (And we even help with estate and trust T3 tax returns.)

Financial Statement Analysis

Using ProfitCents, an in-depth analysis tool, we help you interpret your financial statements compared to industry averages, using real-time industry data on private companies to benchmark clients and track industry trends.


We professionally keep the financial records for your business organized and up to date, offering council and insight into your business during both good and difficult times. We take the stress of bookkeeping off your shoulders so you can spend your time doing what you do best.


Employers must complete and manage the paperwork for payroll, T4s, and worker's comp for all their employees, which can be daunting for small or mid-sized businesses without an in-house accounting team. We take care of all the paperwork and the headaches so you don't have to.

Corporate Accounting and Income Taxes

We prepare year-ends for our corporate clients, handling everything from adjusting entries to amortization. With experience handling corporate accounting and year-ends going back to 1992, we've become one of the tri-city's experts in the field, offering quick and thorough turnarounds.

GST/HST Filing

We help businesses keep track of their HST and GST records, whether they pay annually or quarterly. This, in combination with our bookkeeping savvy, allows us to provide extremely deep insight into your business's short and long-term goals and revenue.

Tax and Financial Strategies

We work with our clients over years to help them develop immediate and long-term strategies so they can save on taxes. We provide assistance with budgeting, implementation, and control of corporate finances. We also work with clients who need special issue consulting. If you're in a tax hole, we devise strategies for tax freedom.

Computer Training

We offer to educate our clients so they can use accounting software and be as involved with their own books as they like. We believe educating our customers is both a privilege and a responsibility.

Why our clients hire us.

We have been saving clients money for over 20 years, and doing what we do best so they can continue to do what they do best. We are certified bookkeepers, CPAs, and Quickbook experts (certified as of 2015). But don't take our word for it — our clients love us too!

Nathan Snelgrove, Wildfire Studios

"I couldn't be happier with Keith's services. I've been using Keith R. McLaren for years and he and his team have consistently saved me money and provided awesome financial advice. I couldn't recommend them more strongly."

Scott Sterling

"Thank you for helping me through the paperwork necessary to object to the arbitrary reassessment that CRA has placed on the Taxable Parking Benefit.

It is incredible that the CRA is trying to pick my pockets once again."