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The P.R.O.M.I.S.E. to Row with You Toward Success

Innovative. Respected. Rowing Together.

When L. Gail Markham founded the firm in 1979, she set out to do something different — not just to provide impeccable service and expertise, but to build a firm grounded in respect, collaboration, and a genuine commitment to the well-being of both clients and team members. With just a small offering of tax and bookkeeping services, she launched what is now MarkhamNorton. A brand built on our legacy as a top southwest Florida CPA firm.

From those early beginnings, we’ve grown into one of the region’s most respected and innovative firms — offering a full suite of services including tax, accounting, outsourced and managed services, business advisory services, forensic accounting, business valuations, and litigation support. Every step of the way, we’ve remained committed to evolving alongside our clients and rowing forward together.

Throughout the history of the firm, we have worked together as a team to provide our clients with whatever customized experience they need. With that being said, we are uniquely positioned to deliver focused and wide-ranging service offerings in industries like Medical/Healthcare, Construction, Professional Services, Trust & Estates, the Service industry, and more – all with the utmost professionalism that comes with decades of leadership experience and with the heart that comes with being a family.

At MarkhamNorton, being innovative isn’t just about technology or services — it’s about thinking differently, working collaboratively, and building lasting relationships that stand the test of time. We believe that success is a shared journey — and by rowing together, we go further, faster.

Today, we are proud to be consistently recognized at the local, state, and national levels as one of the Best Firms to Work For and a member of Inside Public Accounting’s Top 500 CPA Firms — a rare distinction among more than 50,000 firms across the country.

As we look ahead, we remain anchored in our values and powered by our P.R.O.M.I.S.E. to you — our clients, our team, and our community.

Our P.R.O.M.I.S.E. is our compass as we row beside you and on your behalf, all the way to success.

Innovative | Motivated to provide success to others | Create raving fans
Collaborative | Cooperative | Value teamwork | Respect others’ input | Prepared for client meetings to maximize benefit | Effective and clear communication
Strives for continuous learning – we want to know your business as if it was ours | Earn client respect so we can help their client’s friends
Seeks to educate, empower, and support clients with their needs | Lead by example
Communicate authentically | Be dependable | Reliable | Treat every person with respect and fairness | Always performs in an ethical and honorable manner
Personal accountability | Exhibits commitment to accurate product | Always adding value above cost
Wow clients every single day | Creditability as a trusted advisor| Surpasses expectations | Efficiency completing client work

At MarkhamNorton, we believe that true partnership means being in the boat with you...

Navigating challenges, celebrating wins, and always rowing in the same direction.

Our P.R.O.M.I.S.E. is more than a set of values; it’s the guiding force behind every decision we make and every relationship we build.

Each letter represents a principle we uphold with pride. These values shape the way we collaborate, the way we lead, and the way we support you.

With our P.R.O.M.I.S.E. as our compass, we’re not just offering services—we’re offering partnership, purpose, and a shared commitment to your success.

Why Choose Us

Our team of professionals hold a broad array of respected certifications and credentials and are active members and leaders of leading industry professional associations. This ensures our clients receive the latest expertise and innovative solutions, and it reflects our commitment to excellence and staying at the forefront of the services we provide and the industries we serve.