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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.

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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

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The Isler Method for Savings on Taxes

As a business owner, how much taxes will I save using Isler CPA? Isler CPA combines entity choice, retirement planning, traditional business tax deductions, and even leveraging your children to reduce taxes. This video gives a brief overview of how we do it!


RSM INSIGHT ARTICLE: 10 Mistakes Business Owners Make When Thinking About Whether To Exit

Exiting your business, whether through sale or succession, can be fraught with stress. However, some of that anxiety can be alleviated by addressing 10 missteps business owners often make. 1. Being too emotionally attached to the business It is understandable that business owners have an emotional attachment to their businesses. After all, they have typically…

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7 Big Questions About the Oregon Corporate Activity Tax

1. What is the Corporate Activity Tax? a. A corporate activity tax is imposed on each person (Defined in Question #4) with taxable commercial activity (Defined in Question #2) doing business in this state. b. The corporate activity tax imposed for each calendar year shall equal $250 plus the product of the taxpayer’s taxable commercial…

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