We are your numbers people.


We are united through our love of numbers, and it shows in our work and our company culture. Precision in everything that we do, having strong communication skills, and building trusting relationships with our clients is how we do business. Our team is dedicated to getting things done the right way.

Diana Sykes [photo]

Diana Sykes Enrolled Agent (EA)

According to Diana, she’s just “another employee” at Plus Minus Accounting. As everyone else puts it, she brings the glue, spirit, and plenty of brain power to the operation.

“I chose accounting because I loved numbers, but I could have gone into social work because I love people too.” In the end, accounting provided the best of both worlds—a chance to help people by providing key solutions that affect many aspects of their lives.

As a licensed tax consultant, Diana is a trusted, go-to partner for dozens of businesses and individuals. She provides the attention, perspective and solutions they need, especially when the waters are choppy.

“These are stressful times for lots of people. Some are selling, others are shuttering, and many people feel overwhelmed about their taxes. I’m attached to all of my clients. I want to see them succeed, no matter how long we’ve worked with them.”

In a world full of big dreamers, Diana doesn’t mind slogging through the minutia. In fact, she enjoys it.

“I love to dig around the details see what’s really going on. My clients appreciate knowing I’ll get my hands scuffed on their behalf.”

You might spot Diana just about anywhere throughout the state of Oregon, from a day-hike in the Gorge, to a Blazers game, or just browsing around the mall. And if you’re lost when you bump into her, don’t worry—she’ll point you in the direction you need to go.

Specializes in:

  • specializes in Tax & Accounting Services Tax & Accounting Services

I’m attached to all of my clients. I want to see them succeed, no matter how long we’ve worked with them.

Diana Sykes

Stephan Sykes [photo]

Stephan Sykes Certified Public Accountant (CPA)

The rules are always changing in the world of accounting and taxation, not necessarily for the taxpayer’s benefit. To stay ahead, Stephan Sykes, CPA, owner of Plus Minus Accounting, operates his business by the types of rules that support his clients.

“First, we will always have the tools it takes to keep on the cutting edge.” It’s a credo he first encountered in the Marine Corps. “As a Marine, you’re told that if you bring the grit and the drive to succeed, you’ll always have what you need to get it done. That’s how we do things around here too.”

As for the grit and drive, Stephan and his team bring those essential ingredients as well. “We always battle for our clients. If they’re in the dark when they come to us, we’ll get them through. No one should feel lost at sea with their taxes.”

The entire Plus Minus environment is built around the concept of people helping people, not just crunching numbers. This core principle has been in place since Stephan opened his business more than 20 years ago.

“This is a critical point for people. Many of our older clients are facing retirement, while younger clients are jumping into the game for the first time. We’re a solution for everyone, no matter where they are in the cycle.”

While Stephan doesn’t have tons of free time, he does his best to explore the world. Recent excursions have seen him trek coastlines, countrysides and mountain ranges in the U.S. and abroad. If you see him on the trail, chances are he’ll have at least one classic book with him, dozens of stories to share, and a trusted compass that keeps him connected to the people, places and things he loves in Oregon.

Specializes in:

  • specializes in Tax & Accounting Services Tax & Accounting Services
  • specializes in Bookkeeping Services Bookkeeping Services
  • specializes in Payroll Services Payroll Services
  • specializes in QuickBooks Services QuickBooks Services
  • specializes in Business Advice & Consultation Business Advice & Consultation

I started Plus Minus 20 years ago with the intention of combining accuracy, forethought, technology, and strong communications to create precise results for my clients. The results are happy clients.

Stephan Sykes