Profit from our expertise and insight

Tax and assurance professionals with extensive experience in an array of industries.

Watch our video »


Oregon CPA Eugene

Isler CPA is an accounting and advisory firm serving businesses, individuals, community and public sectors across the Western United States. Located in Eugene, Oregon, our team has expertise in many accounting areas including: audit, review, compilation and financial statement preparation, tax preparation and planning, estate planning, forensic accounting and litigation support. Our experts also provide services specific to specialty industries including: manufacturing and distribution, construction, wholesale and retail, municipalities, financial institutions, nonprofit organizations and tribal organizations. When taking care of our customers’ tax needs, Isler CPA uses Ultratax and CS Accounting Professional Suite, ranked by Journal of Accountancy as the top tax software in the country. Isler CPA is a part of the RSM US Alliance, allowing full access to national and international resources for the highest level of accounting service. Find out more about our team and community involvement, or contact us to learn more about our services.

Ask us a question

Contact us at (541) 342-5161 or fill out the form below

What our clients say about us

“With trepidation of change, we sought counsel from Mark Guiley at Isler CPA when our CPA of many years retired. After just a brief meeting our anxiety was completely eliminated. Mark was quick to evaluate the operation of our business and our personal taxes and offer recommendations and answer questions. He reviewed past documents and offered suggestions that saved us thousands of dollars. We have been extremely pleased with the service and our choice with Isler CPA and Mark Guiley.”

- Diana and Michael H.
Owner, Eugene Skin Divers Supply

Isler Insider Blog

View All >>

Planning for Your Taxes in 2018 part 5: Does My Rental Qualify for a 20% Tax Deduction???

This is our fifth installment of our monthly tax blog about the Tax Cuts and Jobs Act. This blog will revisit a topic discussed in our third installment, however this blog post will focus on how the Qualified Business Deduction affects specifically rental properties. General Overview of Qualified Business Income Deduction The Qualified Business Income…

Full Article >>


Planning for Your Taxes in 2018 part 4: Changes to Meals and Entertainment Deductions

This is the fourth installment of our monthly tax blog about the Tax Cuts and Jobs Act. In previous posts, we have discussed changes to tax rates, standard and itemized deductions, and the Section 199A or “pass-through” deduction. In this post, we will look at changes to the deductibility of meals and entertainment expenses incurred…

Full Article >>


Planning for Your Taxes in 2018 part 3: Section 199A or the Qualified Business Income Deduction

This is the third installment of our monthly tax blog about the Tax Cuts and Jobs Act. In our two previous posts, we discussed changes to individual tax rates, exemptions, the standard deduction, and itemized deductions. In this post, we will conduct an overview of the Section 199A deduction, which is also known as the…

Full Article >>

Get Isler tips and strategies

Giving back to the communities we serve

Community Involvement


More >>

Green Business Practices


More >>

Join
Our Team


More >>