Lévesque Marchand Welch SENCRL is a Chartered Public Accounting firm that has deep roots in the communities it serves.

Since 1918, Lévesque Marchand Welch SENCRL has been providing a wide range of accounting, tax and advisory services to private enterprises, government and not-for-profit businesses. Lévesque Marchand Welch experts are industry specialists who have an in-depth understanding of marketplace influences, issues and trends unique to each sector. A true partner, Lévesque Marchand Welch takes a collaborative, relationship-driven approach to client service. Big firm expertise, with small firm service and value. Lévesque Marchand Welch SENCRL is a firm like no other.

Our Vision

We make the complex simple.

At Welch, we go beyond in our service for our clients, people and communities to add value that empowers.


Demonstrating integrity in an inclusive and flexible environment where our people and clients feel valued.


Making a positive difference for our people, our clients and the communities we serve.


Working together to develop passionate people who deliver creative solutions.



Year founded






Staff members

Our approach

We build relationships

We are not just about one-time opportunities. We want to build enduring relationships! You will always be able to reach your client service team, including your Partner, whenever you have a question or a concern.

We take a holistic view

We take a holistic view of each client. Whether you need help with your business or your personal financial needs, we are here to look after you and your family.

We offer traditional & specialty services

We are more than just your traditional accountants. In addition to tax and assurance services, we offer several boutique services.

Our history

Established in 1918, Lévesque Marchand Welch SENCRL has come a long way since its early days. Scroll through the timeline to see the pivotal moments in our company history.


George A. Welch Inspired

George A. Welch leaves school at the age of 10 to take on a number of paper routes as a means of supporting his family. On his route, he meets Ernest A. Larmonth, who becomes his professional mentor.


George A. Welch received his CPA

George A. Welch receives his Chartered Professional Accountant designation.


Welch & Company Founded

George A. Welch founded Welch & Company in 1918, operating from an office in the Elgin Chambers, which overlooked Confederation Square in Ottawa, Ontario.


Firm Expanded & Re-branded

In 1932, the firm expanded with the addition of new partners and became known as George A. Welch & Company.


Revenues Exceeded $48,000

By 1941, the firm was showing significant growth. Revenues exceeded $48,000 and partners were charged out at $4 per hour with staff rates varying between $1 and $2.75 per hour.


Firm moved to larger location

The firm moves its offices to a two-storey home on Laurier Avenue. Welch’s cohort of young accountants receive their CPA designations, including Deans Berry, who earned the Canadian Gold Medal for achieving the highest marks in the country.


Malcolm Welch received his CPA

Malcolm Welch receives his CPA designation, marking the second generation of accountants to join the firm.


Belleville, Cornwall, Picton Founded

An office was opened in Belleville, followed by Cornwall in 1951, Picton in 1958, and Pembroke in 1959.


Firm expands beyond Ottawa

The firm expands beyond Ottawa, opening its Cornwall branch. The 1950’s also saw Welch begin to offer bookkeeping services to its clients. It’s also around this time that Malcolm Welch founds Welby Services Limited.


50 Year Anniversary

On the 50th anniversary of the firm, a new office was opened in Gatineau as a merger with two other firms to form Lévesque Marchand, Boulanger & Cie. In 1967, George A. Welch was made a life member of the Institute of Chartered Accountants.


First Female Partner

Betty Wilson is admitted to the firm as its first female partner.


George A. Welch Passed Away

Our founder, George A. Welch passed away in 1979 at the age of 90. In spite of his age, he had continued to maintain an office and an active interest in the practice until shortly before his passing.


Ottawa Office Relocated

The Ottawa office moved locations a few times to support continued expansion and growth.


Firm name changed

The firm’s name changes to “Welch & Company.”


Welch Opened Renfrew Office

A new office was opened in Renfrew which allowed Welch to provide business to clients throughout the Ottawa Valley region.


“Welch & Company LLP” is born

New legislation involving corporate partnerships requires the firm to change its name to “Welch & Company LLP.”


Scott Murdoch Honoured at 40u40

Scott Murdoch, CPA, CA, Partner was named one of Ottawa’s Top 40 under 40 business leaders.


Welch Partnered with Telfer

Welch committed to donating $100,000 over a five year period to the Telfer School of Management at the University of Ottawa. As part of the donation, a study room was named after Welch and our tax group began teaching a tax course.


Welch Renamed Honouring 90 Years

As we celebrated our 90th anniversary in 2008, the firm changed its name from Welch & Company LLP to Welch LLP.


WelchGroup Founded

WelchGroup Consulting was founded.


Toronto Office is Unveiled

Welch opened an office in Toronto, which was a dream of George Welch’s. The Welch Legacy Foundation was also established to expand on our community leadership and charitable initiatives.


Business Achievement Award

Welch received a Bronze Ottawa Business Achievement Award for Professional Services of the Year.


Christa Casey Honoured at 40u40

Christa Casey, CPA, CA, Partner and Director of our Not-for-Profit practice was the recipient of a Top 40 under 40 award in Ottawa. Welch LLP also received the Telfer Donor of the Year award from Telfer School of Management for ongoing support since 2006.


M&A Practice Established

Our Mergers & Acquisitions practice was established and led by Stephan May. Stephan May was also awarded a Top 40 under 40 award in the same year.


Best in Marketing

Welch was named Best in Marketing at the Best Ottawa Business Awards, as well as Best Place to Work by Faces Magazine.


Best Ottawa Business Award

Welch was awarded Best Business in the Best Ottawa Business Awards as well as Large Business of the Year at the West Ottawa Board of Trade Excellence Awards.

Candace Enman was also named Businesswoman of the Year at the BYAs.


100 Year Anniversary

2018 marks our 100 year celebration.


Family Wealth Advisory is Born

The firm adds another branch to their family tree: Welch Family Wealth Advisory, a holistic approach to managing intergenerational wealth.


Jim McConnery Appointed Managing Partner

Welch LLP rings in the 2021 new year with Jim McConnery as the firm’s Managing Partner.


Cloud Bookkeeping Service Launched

Welch LLP adds a new service line “Elevate by Welch LLP” – a cloud-based accounting solution.


Equality Diversity Inclusion Community Alliance

This new community was founded to foster a space for support and improvement in our Equality Diversity Inclusion practices.

Our People

Each member of our team is always willing to go the extra mile, providing exceptional service to our clients.

BKR International

As a member of BKR International, Welch has access to extensive resources and professional expertise to help our clients do business around the world.

Equity, Diversity and Inclusion

The importance of equality, diversity, and inclusion in our hiring and day-to-day business practice is a priority.

Community Leadership

We strive to make a difference and believe that it is our responsibility to give back to the community.

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.

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.