About Us

About Prosperl CPA

At Prosperl CPA, we use our unparalleled training to save successful small business owners, entrepreneurs, doctors, and professional athletes thousands of dollars in taxes every year. We know how to identify special tax credits, uncover hidden deductions, and leverage little-known loopholes to significantly reduce your tax obligations so you pay less taxes.

2019

Year founded

Hundreds

Clients served with custom tax strategies

Tens of millions

In client tax savings generated annually

50 states

Clients served nationwide

Our Origin

Built for the people the tax code was written for

The tax code is not a punishment. It is a set of incentives.

Mark Perlberg started this firm in 2019 after spending years watching the same pattern repeat itself. Successful business owners and investors, people doing genuinely difficult and valuable work, were handing over enormous sums every April simply because nobody in their corner had planned ahead.

It rewards people who build businesses, create housing, employ others, and put capital at risk. Those incentives exist in writing, in statute, available to anyone who knows where to look and how to qualify. The problem is that finding them requires a completely different skill set from the one most tax professionals are trained in.

Prosperl was built around that difference. Instead of a firm organized to process returns at volume, we built one organized around research, strategy, and implementation. Today we serve clients in every corner of the country, from short term rental operators and syndicators to physicians, agency owners, and founders preparing for an exit.

Our Approach

Proactive, not reactive

Tax preparation is a record of decisions you already made. Tax planning is the process of making better ones. Everything we do sits on that distinction.

01 We Learn Your Full Picture

Before we recommend anything, we sit down with your entity structure, your income sources, your investments, your timeline, and your goals. Strategy that ignores context is just guesswork with confidence.

02 We Build Your Strategy

Our team researches your situation against federal and state opportunities, then delivers a written Tax Strategy that lays out exactly what to do, what it saves, and why it holds up. Plain language, no jargon, no hand waving.

01 We Implement It With You

A plan nobody executes saves nothing. We stay involved through implementation and revisit your strategy as tax law changes and as your business grows, so the plan keeps working in year three the way it did in year one.

The Difference

Why clients leave their old accountant for us

A traditional preparer knows how to put the right numbers in the right boxes. That is a real skill, and it is not the same skill as reducing what those numbers add up to.

Our team carries advanced training as Certified Tax Planners through the American Institute of Certified Tax Planners, an education that goes well beyond what CPA or Enrolled Agent licensure requires. That training is specifically built around uncovering credits, deductions, and provisions that most tax professionals never encounter, and around applying them ethically and defensibly.

The result is a firm that spends its time on the questions that actually move the number: how your entities are structured, when income and expenses land, how depreciation is captured, which credits you qualify for, and how each decision compounds across the next several years of your financial life.

01

Specialists, Not Generalists

We concentrate on real estate investors, entrepreneurs, and high income earners. Depth in a few areas beats surface coverage of everything.

01

Proactive Tax Planning

We look beyond this year's tax return to identify opportunities that can reduce your tax burden and support your long-term financial goals.

03

Written Strategy, Not Verbal Advice

You receive a documented plan you can act on, share with your advisors, and measure results against.

04

Legal, Ethical, Defensible

Every strategy we recommend is grounded in statute and supported by documentation. We are building a long term relationship, not a one season gamble.

Our largest single year savings for one client exceeded $2.5 million. Most engagements are smaller than that, and most still return many times their cost.

Who We Serve

Who we work best with

Our strategies produce the strongest results for people with real complexity in their financial lives, typically those earning above $750,000 a year or holding significant investment assets. That includes real estate investors and short term rental operators, business owners and entrepreneurs, physicians and dentists, high earning professionals with W-2 income they want to offset, and individuals approaching a liquidity event.

If you are not sure whether your situation fits, a consultation is the fastest way to find out. We will tell you honestly if we are not the right firm for you.

Founder

Mark Perlberg, CPA

Certified Tax Planner · Founder

Mark has been a CPA since 2015 and holds a master’s degree in accounting from North Carolina State University. Before founding Prosperl, he built his technical foundation across public accounting and advisory work, including time at RSM US LLP and GlassRatner Advisory & Capital Group.

Since 2019 he has advised hundreds of entrepreneurs and investors, specializing in advanced tax reduction strategies for people who earn well and want to keep more of it. He hosts The Mark Perlberg CPA Podcast, appears regularly on real estate and investing shows across the country, and runs a free live Q&A every week where anyone can bring a tax question and get a straight answer.

His view of the work is simple. Clients do not need more financial vocabulary. They need someone who understands the code, understands their business, and can explain the connection between the two in language that makes the next decision obvious

Beyond the Firm

Tax education, free and public

A large part of what we do happens outside client engagements. Mark hosts a weekly live Q&A open to anyone with a tax question, publishes The Mark Perlberg CPA Podcast covering real estate, wealth building, and reduction strategy, and appears frequently on investing and finance shows nationwide.

The reason is straightforward. The more people understand what is actually possible in the tax code, the fewer of them overpay by default.

Careers

We are hiring tax professionals

We do not do cookie cutter returns, and we are not looking for cookie cutter accountants. If you want to spend your career on advanced planning rather than data entry, working fully remote with a team that invests in continuous learning, we would like to hear from you.

Let's Talk!

Request a Free Consultation

Request a consultation with us to find out how we can help you save on taxes.