Big-firm experience.
Small-firm attention.
We combine the expertise of a large firm with the personal attention only a small firm can provide — and we work to build relationships that last for years.
From a sole proprietorship to a trusted Dubuque partnership.
Founded in 1997 as Roger Klosterman, PC, Certified Public Accountants, our practice has grown into the partnership now known as Roger Klosterman & Co., L.L.P. Located in Dubuque, Iowa, we proudly serve clients throughout Iowa, Illinois, Wisconsin and many other states.
As we’ve grown, so have our clients. Serving a wide variety of entities gives us firsthand experience with the issues businesses and individuals face at every stage of growth.
Work With Us
The faces behind the firm.
Roger Klosterman, CPA, PFS
Founder & Managing PartnerSince graduating from Loras College, Roger has worked for a Top 10 and a Top 25 firm, been a partner in a Top 50 firm and owned another practice. A Certified Public Accountant for over thirty years, he founded Roger Klosterman & Co., L.L.P. to deliver individual and corporate taxation, small-business consulting, financial statements, personal financial planning, ministry taxation, business valuations, litigation support and estate planning.
Roger is the author and presenter of the seminar “Clergy & the I.R.S.” and a member of the AICPA and the Iowa Society of CPAs. Away from the office he’s an avid Chicago Cubs fan who enjoys family, spiritual growth, travel, biking, yard work and reading — and he’s an outstanding karaoke singer.
Kathleen Klosterman
Firm Administrator & PartnerKathleen keeps the firm running smoothly — from client onboarding and scheduling to billing and office operations. She’s often the first friendly voice you’ll hear when you call, and she makes sure every client gets the responsive, personal experience our firm is known for.
Our history
Roger Klosterman, PC is founded
A sole proprietorship built on personal service and attention to detail.
Roger Klosterman & Co., L.L.P.
The practice becomes a partnership to serve a growing base of businesses and families.
A Tri-State & nationwide practice
Serving Iowa, Illinois and Wisconsin — and clergy clients as far away as Alaska and Arizona.
Deep expertise across the financial life of your family and business.
From your first return to your succession plan, we bring the same care and precision to every engagement.
- Individual & Corporate Taxation
- Ministry Taxation & Planning
- Business Consulting
- Business Bookkeeping
- Business Payroll Services
- QuickBooks Consulting
- Financial Statement Preparation
- Personal Financial Planning
- Business Valuation
- Estate Planning
- Litigation Support
- IRS Representation
Let’s take taxes off your mind.
Schedule a no-pressure conversation with our team — in person in Dubuque or by phone from anywhere.