About Our People

Mark Jackson


Mark joined Welch LLP as a co-op student in 1999 and became a full time employee in 2002 after completing his Bachelor of Mathematics and his Masters of Accounting, both at the University of Waterloo. He received his CA designation in 2004 and Certified Internal Auditor designation in 2012. Mark was named Partner in 2016. He has experience providing financial statement and compliance audits, accounting, as well as documenting, evaluating and testing internal controls for audited organizations. Mark has also conducted practice inspections on behalf of CPA Ontario.

Mark Jackson is Welch LLP’s expert in computer assisted auditing techniques, given his strong background in sophisticated IT environments and 10+ years in financial auditing. Mark is also one of Welch’s resident experts in ACL, which is a tool used in audits to extract and analyze data.

Since 2004, Mark has been involved with the design and maintenance for the firm’s CaseWare (assurance engagement software) template files, which include the development of audit programs, year-end schedules and financial statements. These templates have been used in several thousand client files at 12 Welch LLP offices across Ontario. In addition, Mark has provided training services to new staff at Welch LLP.

Mark qualified as a certified consultant for Sage 50 (Simply Accounting) in 2005 and has since provided consulting services for numerous clients in a variety of industries. Such consulting services have included installation, data conversion, training and support. Mark was also involved in the data mapping schemata for the initial establishment of the ACCPAC A/R module for the Billing and Collection Function for the Federal Communication Commission (USA).

Quick Facts


Bachelor of Mathematics; Masters in Accounting, University of Waterloo


Assurance, computer-assisted auditing techniques

Favourite Author/Book

Outliers – Malcolm Gladwell

Personal Accomplishment/most proud of?

My two children


Ottawa, Toronto


613-236-9191 #151


View profile


Assurance and Accounting

Are You Ready To Talk To A Specialist?

Get in touch, tell us your needs and we’ll assign an industry specialist to your organization.

Stay In The Loop

We’ll keep you up-to-date about content and trends that are relevant to you and your business.

Follow Us

Follow our social media accounts to get the latest news and opinions from our industry experts.

Find A Career

Join a team that wants to help you advance your career and achieve success, whether you’re still a student or an experienced professional. We will support you every step of the way on your path to success.