Professional, personalized tax and accounting services

The Financial Tax & Accounting team you can count on

Williams & Schiller

Certified Public Accountants

Now with offices in both Fargo, North Dakota and in Sandpoint, Idaho! For our clients locally and around the world, we provide personalized tax planning and preparation, financial services, business accounting and payroll, and more. How can we help you?


We guide clients through a full range of tax planning and preparation decisions, employing strategies that minimize tax liabilities, maximize cash flow, and keep your financial goals on track. 

Business Services

No matter how simple or complex your business needs, we’ll tailor the perfect solution. We offer a wide variety of accounting, bookkeeping, payroll and advisory services, as well as Quickbooks training.

Williams & Schiller is here to help with all your personal or business needs.
Professional tax, accounting and financial services for individuals and small businesses.

Tax Planning & Preparation

Financial Planning: We guide our clients through a full range of tax planning and preparation decisions with strategies that minimize your tax liabilities, maximize your cash flow, and keep you on track to your financial goals. Our expertise, experience, analysis, and thorough research allow you to optimize financial opportunities. We are knowledgeable and up-to-date on the tax laws and trends in tax practice. We have a structured process whereby we contact our clients periodically to ensure they are on track with a tax efficient plan.

Learn More »

QuickBooks and Payroll Services

We support and train clients using QuickBooks accounting software. This program can provide useful and timely information in the form of financial statements, reports and graphs. We don’t just help you use the software; we train you to use it more efficiently and effectively. Just imagine having real-time financial information at your fingertips.

No matter how simple or complex your business needs are, we can tailor the perfect payroll solution for you. We offer a wide variety of payroll options.

Find Out More »

Financial Services

Williams & Schiller is an independent, fee-only Registered Investment Advisor (RIA) firm focusing on true wealth management. Long-term relationships are our foundation. We want to know about your family, your background, your goals and dreams. Our clients sleep well at night knowing they have a trusted advisor watching over the entirety of their financial lives. This is the essence of true wealth management.

Learn More »

IRS Audit & Defense

The IRS is changing the way it is reviewing and auditing returns and we are well aware of these changes and equipped to prepare our returns to minimize audit risk. Additionally, we offer an annual voluntary Audit Risk Fee program where our clients can pay a nominal “insurance” fee that will cover our time in dealing with an IRS or State Audit or Notice.

Read More »

Business Services

From start-ups to established enterprises, your business relies on accurate and insightful financial information to maintain profitability and capitalize on new opportunities. Our accounting services steer you closer to these goals with accurate record-keeping and reporting as well as support for initial accounting system setup, cost-containment, tax planning, investments, and employee benefit and profit-sharing plans.

See All Business Services »

Expat Tax Services

Expatriate Tax Issues: We are a U.S. Certified Public Accounting firm dedicated to serving the American expatriate community around the world. Our focus is income tax preparation and planning for American citizens living abroad. The majority of our expat clients are US citizens living in Canada and we have special awareness of the interplay of the U.S. and Canadian tax systems.

Our CPA firm features an innovative tax preparation system that expedites the preparation of your U.S. tax return no matter where you live in the world. We have a secure client portal system, which allows us to retrieve your tax documents and to provide our completed returns to you through a system that is much safer than e-mail. We also have Skype technology available for voice and video conferencing to help facilitate communication. Information technology now allows Americans around the world to obtain our professional CPA assistance no matter where they live.

Find out More »

Planning for Retirement

Our expertise, experience, analysis, and thorough research allow you to optimize financial opportunities and plan for retirement.


As an independent, fee-only registered investment advisor, our firm focuses on true wealth management – for you and your family.


Living abroad? Our CPA firm features an innovative tax preparation system that expedites the preparation of your U.S. tax return no matter where you live in the world.

Take the steps now to secure your future.

Don't wait until it's too late to plan for your retirement.

With an in-depth knowledge of Social Security, pensions, taxation of retirement income, annuities, reverse mortgages, health care options, and different withdrawal approaches, our financial advisors are trained to help you accumulate and invest your money in the most effective way possible. We have training to help you figure out how to use this money to generate reliable paychecks in retirement.

Tax saving and planning strategies from your trusted financial advisor

News, Updates and Financial Advice

What Our Clients Say

  • I began using Williams & Schiller after having an unfortunate experience with another firm in the US. Brett Sweezy, CPA was not only incredibly thorough in cleaning up the mess but provided a fresh look at my finances and has been pleasant to work with. I am so happy with the honest, reliable and efficient service I have received from Williams & Schiller. I highly recommend them!

    Laura T.
  • I travel overseas frequently for several years at a time working. Taxes can be very frustrating with international laws. This company has made it so easy for me every yea. Their professionalism is superb, especially when working overseas in the United Arab Emirates, the laws are more complicated. I’m so appreciative and impressed with Brett and his colleagues. They’ve taken all the stress and made it pleasurable during tax time, miles away from the USA.

    Keith C.
  • Williams & Schiller has provided payroll services and Quickbooks help in bookkeeping for two companies I run, for 10-plus years now. Their expertise has always been spot-on, with attentive service and prompt response whenever a special need has popped up. I’m happy to give them a thumbs-up and recommend WS to others.

    Chris B.
Need Help with your Finances, Taxes or Payroll?
Come and see us, we'll guide you in the right direction. We'll do the work on your Finances, Taxes or Payroll so you don't have to!
Let us do the work for you