Welcome to RTN CPA

Your Trusted Partner in Nonprofit Financial Management.

At RTN CPA INC, we specialize in providing top-notch financial and accounting services to nonprofit organizations. Let us handle your financial needs, so you can focus on achieving your mission.

Welcome to RTN CPA

Reliable Financial Solutions for Government Services.

At RTN CPA INC, we deliver trusted financial and audit services for government agencies, special districts, and mission-driven public entities.

Welcome to RTN CPA

Financial Advisory Services Tailored for Small Businesses.

At RTN CPA INC, we help small and medium-sized businesses thrive with comprehensive financial and tax services.

Exclusively for Not-for-Profits

We focus solely on the financial and accounting requirements of not-for-profit organizations, ensuring specialized and tailored services.

Experience and Expertise

With years of experience in assisting a diverse range of not-for-profits, we bring unparalleled insight and quality services to our clients.

Mission-Centric Approach

By handling nonprofit audits and consulting, we enable our clients to concentrate on their core mission and deliver impactful results.

Who we are
Who we are

0+

Years of Experience

Who we are

Leading the Way in Financial Services

RTN CPA INC is a certified public accounting firm dedicated to serving nonprofit organizations, government agencies and districts, and small businesses. With a focus on financial audits, compliance audits, UG audits, and more, we are here to facilitate and optimize your nonprofit operational activities.

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Innovative strategies for financial reporting and financial audits.

  • Internal controls review
  • Grant reporting support
  • Nonprofit financial consulting
  • Financial & compliance audits
  • UG (Uniform Guidance) audits
  • Financial Review and Compilations

Get Expert Support — Let’s Talk

Have questions about your finances, audits, or compliance? Our team is ready to guide you with clear advice and real solutions that work for you.

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Advisory & Consulting Image

Advisory & Consulting and Accounting Services

  • Internal controls review
  • Grant reporting support
  • Nonprofit financial consulting
  • SCO Financial Report Preparation
  • Financial & compliance audits
  • UG (Uniform Guidance) audits
  • Financial Review and Compilations
  • Tax preparation for NFP
Check our services

Trusted Services, Proven Results

Our expert team delivers reliable, nonprofit-focused financial services that drive clarity, compliance, and confidence — empowering your organization to operate with impact.

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Audit, Assurance, and Compliance

Audit Services Hiring a CPA specialized in nonprofit accounting and auditing gives organizations like charities, churches, and social service agencies...

Tax Preparation and Tax Planning

What we do Tax ServicesWe provide expert financial guidance and compliance support to help individuals and businesses make smarter, more...

Fractional CFO & Accounting Services

Fractional CFO, Controller Services, and Accounting Services At RTN, we partner with growing organizations that need clarity and confidence in...

Consulting and Advisory Services

Empowering Not-for-Profit Organizations and Small Businesses At RTN, our consulting services are tailored specifically for not-for-profit organizations and small businesses,...

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Stuart Roco profile picture
Stuart Roco
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Managing both school and independent work left me unsure about my tax responsibilities, but Roman made everything clear and easy to understand. He explained exactly which business expenses I was eligible to deduct and showed me how to keep track of them in a simple, organized way. Because of his guidance, I was able to reduce my taxable income and lower my tax liability significantly. Roman was patient, professional, and always willing to answer my follow‑up questions. You can tell he genuinely cares about helping people succeed. If you want your taxes handled the right way and without stress, I highly recommend RTN CPA and Roman Richardson, CPA.
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James Mixon profile picture
James Mixon
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Roman provided fast and friendly service. Hes is very knowledgeable and made sure I understood the entire process throughout!
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Adil Mansha profile picture
Adil Mansha
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Working with RTN CPA INC, with Roman Richardson CPA has been a game-changer. •My Personal tax preparation was fast and stress-free. • He provided a proactive tax-planning session uncovered legal strategies and ‘loopholes’ that reduced my tax liability by and maximized my refund to • Filing was handled end-to-end; I signed once and received instant confirmation from the IRS. If you want expert advice, year-round guidance, and bigger tax savings, I highly recommend Roman Richardson and the entire RTN CPA team
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Dev Armenta profile picture
Dev Armenta
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Roman is amazing! Ever since I bought my house, he has done my taxes. He has advised me of many helpful strategies to help secure a better refund over the years. He is highly aware of new tax structures and changes and makes sure to advise me of theses as they arise, I have been a devoted client of his for the last 6 years and will continue to use his services. I highly recommend him!
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Executive Director LOCDC profile picture
Executive Director LOCDC
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RNT CPA audited our preschool last year and this year. Roman put in many hours to ensure our audit was completed on time. He also gave our agency advise on how to improve some of our financial processes. I highly recommend.
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Cynthia Murdaugh profile picture
Cynthia Murdaugh
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Our Agency's experience with RTN CPA; they have demonstrated a high level of professionalism, responsiveness, and expertise. Roman's proactive engagement and clear explanations have been instrumental in delivering a successful audit.

Several hundred

customers are served...

Finance consulting involves providing expert advice to businesses, individuals, or organizations

Nonprofit Organizations

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Governmental

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Small Business

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Empowering you not to hesitate to consult about taxes with us

Whether you’re navigating complex nonprofit tax codes or filing annual returns, our experts provide clear, reliable guidance to keep you compliant and confident.

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Get in touch


We are committed to protecting your privacy. We will never collect
information about you without your explicit consent.

Our Value

Make your business stand out with our personalized accounting services.

At RTN CPA INC, we understand that every nonprofit is unique. That’s why we tailor our financial services to meet your specific goals — offering the clarity, compliance, and confidence your organization needs to thrive.

Our Vision

To be the most trusted financial partner for nonprofits by delivering clarity, integrity, and strategic insight that supports lasting impact.

Our Mission

To empower nonprofit organizations through expert accounting, audit, and advisory services — enabling them to operate efficiently, remain compliant, and focus on what matters most: their mission.

25+

Years of Experience

100+

Audits

4.8

Rating Client

2

Branch Office
Why Choose Us

Perform with. Trust.

Trusted

We build long-term partnerships based on integrity, accountability, and a deep understanding of nonprofit needs.

Experience

With 25+ years in the field, we’ve supported nonprofits of all sizes with accurate audits, reports, and strategic insights.

Reliable

Count on us for timely, precise, and compliant services that help you stay focused on your mission.

Areas we serve

Nonprofit CPA services by location

RTN CPA serves nonprofit organizations in these markets. Choose a location to see the audit, accounting, tax and advisory services offered there.

Let’s join hands and make it happen with the team!