About Us

Moss Adams is a fully integrated professional services firm dedicated to assisting clients with growing, managing, and protecting prosperity.
With more than 4,750 professionals across more than 30 locations in the West and beyond, we work with many of the world’s most innovative companies and leaders. Our strength in the middle market enables us to advise clients at all intervals of development—from start-up, to rapid growth and expansion, to transition.

Our Culture & Values

Our History

We put down roots in the Pacific Northwest more than 100 years ago. Since our origins at the start of the twentieth century, we've steadily expanded to serve clients not only in the West but also across the nation and globally. Today, we're advising the businesses and industries that are driving progress for tomorrow.

John G. McIntosh Opens an Accounting Firm

Congress enacts the first federal income tax law. John G. McIntosh opens an accounting firm in Seattle to support the Pacific Northwest’s forest products industry. The firm expands its services to Portland in 1922.

Moss Adams Gets Its Name

Over the years the firm undergoes several name changes—McIntosh, Cowan & Co; Charles S. Cowan & Company; and Moss Adams & Co. This will get shortened to Moss Adams LLP in 1995.

1960 - 1979
The firm expands its footprint in the West

The firm opens offices in Northern California and Southern California as well as additional offices in Oregon and Washington. In 1972, the firm adds a consulting arm, offering clients value-added services that complement our core assurance and tax solutions.

1990 - 2000
Moss Adams becomes the 15th largest accounting and consulting firm

The firm reaches a new growth milestone with the addition of more offices in Oregon and Washington. Throughout the decade and into the new century, the firm continues to grow, expanding in California and establishing investment banking and wealth management divisions.

Moss Adams helps found Praxity, AISBL.

Praxity is a global alliance that today counts more than 100 independent accounting firms as members, providing our clients who do business internationally with trusted expertise in more than 80 countries and territories around the world.

Moss Adams turns 100

The firm celebrates its 100th anniversary and releases its first corporate social responsibility report to measure the firm's progress toward its social and environmental goals.


Get Started

You're talented and ambitious. You have options. We get that. That's why we offer opportunities to build your skills and explore your career in a supportive environment. At Moss Adams, you’ll be challenged and rewarded for leadership, technical excellence, and inspired perspectives. Where you take your career is up to you.

As a firm leader, you also have options. For more information about Partner opportunities at Moss Adams, please contact us.

Discover What Makes Us One of the Best Places to Work


Moss Adams was among the first major accounting firms in the nation to organize by industry.
We train our specialists not just in technical audit and tax matters but also in issues specific to our clients’ organizations. By diving deep into each industry, we bring more contextual understanding to each engagement.

International Presence

Your potential for growth shouldn’t be constrained by borders. We started serving international organizations more than 70 years ago. Today, we help over 3,000 companies doing business in more than 100 countries and territories.
Combining our international tax and assurance expertise with Praxity, AISBL, our international alliance with like-minded firms, we help clients discover and embrace prosperity around the globe.


News & Press

Our professionals are steeped in the industries they serve.
Combining technical expertise with our keen understanding of our clients' businesses, we offer knowledgeable commentary on a broad spectrum of accounting, tax, finance, and business operations issues.

Latest News & Press