Free phone consultation

Riordan & Associates, CPAs

Newport Beach · Huntington Beach

Tax strategy for Orange County, and the people who run it.

A boutique CPA firm handling tax preparation, audit defense, bookkeeping and payroll for individuals and small to mid-size businesses. 30 years in practice, two offices, and someone who actually picks up the phone.

Urgent

Got a letter from the IRS?

We handle notices, audits, levies and liens from the IRS, Franchise Tax Board, EDD and Board of Equalization — and we respond on your behalf. Call before you reply to anything.

Have the notice in front of you, and the tax year it refers to.

Ongoing help

Need a CPA you can actually reach?

Tax preparation, bookkeeping and payroll for individuals and small to mid-size businesses across Orange County. Free phone consultation, no obligation.

Available year-round — not just from January to April.

Our approach

We view every client relationship as a partnership

Our growth has been built on the results we achieve for our clients. With a focus on integrity, quality and value, we provide the highest level of expertise and personalised service — and we are there when you need us most.

About the firm

Why choose us

Responsive, year-round, and licensed

  • Solid experience

    Over 30 years working with small and mid-size businesses and individuals across Orange County.

  • Professional team

    CPAs and Certified QuickBooks Pro Advisors, using current technology and current tax law.

  • Client focus

    We view every client relationship as a partnership. Our success is the result of your success.

  • Excellence

    We stay current with the latest laws, trends and educational opportunities in the industry.

  • Integrity

    A focus on integrity, quality and value — your accounting and tax needs get the care they deserve.

  • Responsiveness

    Responding to clients' calls and performing is what we do best. Available year-round.

Client feedback

What people say

Read our Google reviews
  • Aaron and his team expertly cleaned up our entire accounting & bookkeeping program. Their high level of expertise helped our business grow to the next level.

    Jimmy W.Orange County · Digital Marketing Expert
  • Aaron bailed me out of a very bad situation with the IRS. I don’t know what I would have done if it weren’t for his expert advice.

    Amanda S.Irvine · Entrepreneur
  • My last CPA was horrible and he even missed some deductions. Aaron reviewed my prior year return and saved me a ton of money!

    Brian S.Newport Beach · Engineer

Read more testimonials