Relationships built on precision, trust, and over four decades of proven financial performance.

Since 1982, R. Derrick Colling Professional Corporation has been the quiet financial engine behind many of Sherwood Park and Edmonton's most successful enterprises. In an industry where trust is paramount, our greatest asset is the longevity of our client relationships. We don't just act as tax preparers; we serve as lifelong financial partners.
Read what our long-term clients have to say about our commitment to their financial health, corporate governance, and personal wealth preservation.
Derrick's accounting services came highly recommended to me by a very successful business peer in 2014. After working with another accounting firm I was quite apprehensive to trust another Edmonton accounting firm, especially with the insane rates I was charged previously. With the oil crash hovering over my head, 2 startups and box in hand I arrived at Derrick's business. I was immediately impressed by his professionalism and knowledge. His welcoming disposition gave me comfort in knowing that I was dealing with someone I could trust.
There was no question when Derrick got my documents my accounting was a mess and the advice I was given previously horrible. Fortunately, he was able to rectify all my 7 years of bookkeeping and cleaned up my accounting. I was astonished to see the write offs and how he was easily able to navigate tough waters like a leviathon finding things that the previous accounting firm didn't. With the worst drilling years since 1976 I was able to keep my businesses above water and feel confident that years ahead will only grow stronger to realize business dreams.
I can't thank Derrick and team enough for their efforts. If you're looking for a reliable, dependable, affordable and extremely knowledgeable accountant then I highly recommend Derrick Colling. Every question I have from balancing provincial/federal corporations, business audits, to taking the business public he is an expert in all areas without hesitation when asked questions. You are who you surround yourself with and I can honestly say that I have been very fortunate to work with him and hope you enjoy similar successes.
I've been working with my accountant for the past 16 years, handling both my business and personal taxes. Throughout all these years, their professionalism, accuracy, and reliability have been exceptional. They have always been responsive, knowledgeable, and willing to go the extra mile to make sure everything is done properly and on time. It's a great comfort to know my finances are in such capable hands. I truly appreciate the long-standing support and highly recommend their services.
I was planning to refer Derrick to a colleague but came across a previous review, which I found surprising. He is a bit old school, he provides all the necessary documents by mail, complete with envelopes and stamps for returning signatures. He keeps a copy for his records to file electronically and one for the client. My husband and I have been using his services for years, and he's always been informative and helpful, especially when guiding us through our future business plans. I highly recommend him.