Firm Profile

RUSSELL, MAININI, & FRANKLIN LLP

Located along California’s beautiful Central Coast in San Luis Obispo, Russell, Mainini & Franklin LLP is a full-service accounting firm dedicated to helping individuals, businesses, and organizations achieve lasting financial success. Our mission is to consistently exceed client expectations by providing close, personal attention, professional insight, and tailored financial solutions.

We take pride in giving clients the assurance that their needs are met by professionals with decades of combined experience, advanced training, and technical expertise. Each partner brings a distinct background and area of specialization, allowing us to deliver a comprehensive range of services, including tax planning and preparation, audit and assurance, business consulting, and financial advisory, customized to fit each client’s unique goals.

At Russell, Mainini & Franklin, we believe that strong relationships are the foundation of great results. Every client relationship is viewed as a true partnership, built on trust, communication, and mutual success. We measure our success by the growth and prosperity of the clients we serve.

Our proactive, hands-on approach ensures that we are always available and responsive to evolving client needs. We are deeply committed to maintaining the highest standards of professionalism through ongoing investment in continuing education, state-of-the-art technology, and strategic business relationships.

This commitment to excellence enables us to provide not only technical expertise, but also thoughtful guidance and forward-thinking solutions, helping our clients navigate challenges, seize opportunities, and achieve their financial goals with confidence.

A LOOK AT OUR PARTNERS

Fred Russell, CPA, Founding Partner - Retired

Keith H. Franklin, CPA, JD - Retired

Ronald A. Mainini, CPA, Managing Partner

A native of San Luis Obispo, Ron Mainini is a Certified Public Accountant with more than 30 years of experience in public accounting. He earned his Bachelor’s degree in Business Administration from California Polytechnic State University, San Luis Obispo, and later received his Master of Science in Taxation from the University of Southern California.

Ron began his career with Deloitte, Haskins & Sells (now Deloitte LLP) in Orange County, where he gained extensive experience working with a wide range of clients in the real estate and partnership tax sectors. During his seven years with the firm, he advanced to the position of Tax Manager, serving many of Southern California’s largest real estate developers and honing his expertise in complex tax compliance and planning strategies.

After returning to his hometown of San Luis Obispo, Ron founded his practice with a continued emphasis on tax compliance, planning, and consulting for individuals, small businesses, and partnerships. His deep technical knowledge and practical experience allow him to provide clients with clear, effective tax strategies that align with their personal and business goals.

Over the course of his career, Ron has built long-term relationships with his clients based on trust, responsiveness, and integrity. He takes pride in offering thoughtful, hands-on guidance to help clients navigate changing tax laws and plan for the future with confidence.

When he’s not in the office, Ron enjoys contributing to the local community, spending time with his family and five children, and taking advantage of all that the Central Coast has to offer. 

Nicole L. Mainini, CPA, Partner

Nicole is a Certified Public Accountant and a proud graduate of California Polytechnic State University, San Luis Obispo, where she earned both her Bachelor of Science in Business Administration and Master of Science in Accounting. A San Luis Obispo native, Nicole is deeply connected to the Central Coast community she now serves.

Nicole began her career with Deloitte LLP, one of the world’s leading accounting and professional services firms, where she gained extensive experience in corporate and individual tax compliance and consulting. During her time with Deloitte in Southern California, she worked with a wide range of clients across industries, developing a strong foundation in complex tax planning, financial reporting, and client relationship management.

In 2018, Nicole returned to the Central Coast to continue her public accounting career closer to home. Over the past decade, she has built lasting relationships with her clients by providing proactive, personalized service and thoughtful financial guidance. Nicole takes pride in helping individuals and businesses navigate changing tax laws and make informed financial decisions with confidence.

Beyond her professional work, Nicole is passionate about giving back to her community. She currently serves on the Board of Directors for Woods Humane Society and participates in several local charitable and professional organizations.

Nicole is grateful to be practicing in her hometown, where she combines her technical expertise, local insight, and dedication to client success to make a meaningful difference in the community she loves.