CainEllsworth – Certified public accountant in Sioux Falls, South Dakota

The Academy

The Academy

We help organizations grow and retain strong leaders through a focused, two-year leadership development program led by a trusted industry partner.

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Community Banking

Community Banking

We keep our fingers on the pulse of Midwestern banking through our active involvement in numerous banking organizations.

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Who We Are

Cain Ellsworth is a professional accounting, tax, and advisory firm dedicated to building strong relationships and delivering results that go beyond the numbers. We take time to understand each client’s unique goals, offering tailored strategies that support growth, resilience, and long-term success.

From community banks and insurance companies to individuals and closely held businesses, our clients count on us for expert financial audits, tax planning, strategic advisory, and leadership development.

At Cain Ellsworth, we’re more than accountants — we’re your partners in both the everyday and the unexpected, committed to helping you achieve your fullest potential.

Industry Insights

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June 9, 2026

Summer Jobs, Side Hustles, and Summer Tax Problems

Summer jobs and side hustles can feel like easy extra money, but without the right planning, that income can turn into a surprise tax bill next April. From W-4 mistakes and self-employment taxes to new 1099 reporting thresholds, there are more ways to get tripped up than most families realize. Read on to learn the most common summer tax pitfalls and exactly what you can do right now to avoid them.

June 8, 2026

Post-Tax Season Checklist for Small Business Owners

Tax season may be over, but your completed return holds valuable insights that can help you run a stronger business for the rest of the year. From fixing your bookkeeping systems and building a mid-year budget to reviewing worker classifications and your business insurance, there are five key areas worth addressing while the numbers are still fresh. Taking action now, rather than waiting until the next deadline, puts you in a far better position heading into year-end.

June 8, 2026

Tax Strategies For Rising Income

A jump in income is good news, but it also triggers a chain of tax decisions that most people don’t see coming until it’s too late to act. From phaseouts and surcharges to retirement account mismatches and withholding gaps, the real planning opportunity happens before year-end, not at tax time. Here’s what you need to know to stay ahead of a higher tax bracket.

Resources & Solutions

We are constantly evolving to help improve our clients’ effectiveness and bottom line. Below are some unique resources that could help raise the bar for your business.

Growth & Profit Solutions

Growth & Profit Solutions exists to help business owners determine what they want their business to look like and then how to get there.

The Academy for Excellence

Our leadership development program is dedicated to helping community banks thrive by cultivating their next generation of leaders. Excellence.training

Client Testimonials

See what people think about us.

I consider Cain Ellsworth a valued partner and mentor who continues to push the envelope in order to find new ways to add value for clients.

– MANAGER, GERMAN FARMERS MUTUAL INSURANCE ASSOCIATION

People don’t care how much you know until they know how much you care and Cain Ellsworth definitely operates with this motto in mind. They care and they know!

– PRESIDENT, DIVERSIFIED TECHNOLOGIES, INC.