An Accountant You Can Rely On

Need to simplify your small business operations?

Hand it off to William.

William Keller - Oregon CPA




Williams Story

I am a native of Portland, born and raised. I am active in the community being involved with the East Portland Chamber of Commerce and the Parkrose Business Association. I am also an active member at my church, St. Therese, along with the Knights of Columbus as the financial secretary for his local council. I connect to the community and industries that keep our city moving, producing and growing.

Beginning in 2013, I opened my own tax and accounting practice in the Parkrose neighborhood. I have resided in the Parkrose area for the past 12 years and wanted to be involved in the local business community.

Prior to opening my practice, I worked at Joy Sidman, CPA for 10+ years beginning in July 2002. I got into accounting for a good, solid reason – to help small businesses and individuals.

I earned my BA in Accounting in the spring of 2000 from Carroll College in Helena, MT and then went on to earn my MBA from the University of Portland in 2002. I earned my Oregon CPA license June 1, 2007. I am both an active member of the Oregon Society of CPA’s and the American Society of CPA’s.

When I am not in the office you will likely find me out fishing, golfing, bowling or enjoying time with friends for the occasional game. I also enjoy the Oregon coast especially at Cannon Beach. Want to know more about myself or my business? Just ask.

Years in the Business

Years in Parkrose

Happy Clients

Accounting Services

Tax Services

  • Corporations
  • Partnerships
  • Individuals
  • Estates, Trusts, and Gifts

Individual & Business Consulting & Bookkeeping

  • Budgets and Budget Analysis
  • Choice of Business Entity
  • New Business Accounting Setup
  • Payroll Analysis
  • Retirement Plans

Tax Services

Personal & Corporate Tax Preparation

  • Tax Management Services
  • Audits & Compilation
  • Financial Projections
  • Bookkeeping

Financial Planning

It’s Never Too Early or Late to Start Saving for the Future

  • Budgeting Analysis
  • Benefits & Pension Plans
  • Accounting Services
  • Retirement Planning


In a Sticky Situation? We Can Help

  • IRS Representation
  • Entity Selection
  • Payroll Services
  • Estate Tax Preparation


We Keep Everything Organized For You In One Place

  • Budgeting Analysis
  • Benefits & Pension Plans
  • Accounting Services
  • Retirement Planning


"William is very experienced and I would highly recommend him to any business looking for advice or accounting, they will be in good hands! Many of us use William's services for our personal accounting needs as well as business consulting for clients."

Breanna DeLuca

"William Keller has been my CPA for the last six years and I wouldn't think of going elsewhere. I'm a Realtor so my taxes can get complicated. He always has a plain English explanation (and recommendation when there's a choice)."

Dave Sutton

"You are in great hands with William! We have always done our own taxes but after 5 years with a growing business and busy schedules we needed some help. We had been leery about handing the job off to someone else but I wish we had found William sooner!"

Amanda Thompson

William Keller, CPA

4110 NE 122nd Ave. Suite 120 Portland, OR 97230

M-F: 8am-5pm, S-S: Closed

  • This field is for validation purposes and should be left unchanged.