Due Diligence: Should You Hire a CPA Team or Do It Yourself?

At some point in every business acquisition, you hit the part where the seller hands over the financials and says "here, look at this." That moment and what happens next is one of the most important decisions you'll make in the whole process.

We've talked on this blog about finding the right size deal, having a growth plan before you buy, and whether a franchise is right for you. All of that matters. But none of it protects you if you don't actually understand what you're buying when you get to due diligence.

So the question most buyers eventually ask: should I hire a CPA team to do this, or should I dig into the numbers myself?

The honest answer is that it's not quite the right question. But let's work through it.

The Case for Hiring a CPA Team

There's a real argument for bringing in professional help. A good CPA team that specializes in business acquisitions has seen hundreds of sets of small business books. They know what normal looks like, and more importantly, they know what suspicious looks like.

Small business financials are frequently messy. Sellers run personal expenses through the business. Revenue recognition isn't always clean. Add-backs — the adjustments sellers make to show what the business "really" earns — can be legitimate or they can be creative fiction. A CPA who does this regularly will catch things that a first-time buyer simply won't know to look for.

There's also something to be said for having a professional on record who reviewed the books. It doesn't eliminate your risk, but it's a layer of protection.

The Problem Nobody Talks About

Here's the part that doesn't get said enough: hiring a CPA team can give buyers a false sense of security that causes them to mentally check out of their own due diligence.

This happens more than people admit. The buyer gets the data room, feels overwhelmed, hands everything to the accountants, and waits for a report. The report comes back and says something like "no major issues identified, a few items to note on page 12." The buyer reads the summary, skims page 12, and moves toward closing.

What they didn't do is sit with the numbers themselves long enough to understand the business. They didn't notice that revenue is almost entirely concentrated in two customers. They didn't ask why accounts receivable spiked in the last quarter. They didn't follow up on the footnote about a lawsuit that was "resolved."

A CPA can tell you if the math adds up. They cannot tell you if the business makes sense for you. Those are different things, and only one of them can be outsourced.

What You Can't Delegate

Regardless of who you hire, there are things you need to own personally in due diligence.

You need to understand where the revenue comes from. Not just the total number — who are the customers, how long have they been customers, and what would happen if the top two or three walked out the door after the sale. Customer concentration risk is one of the most common ways buyers get hurt, and it won't show up as a red flag in an accountant's report.

You need to understand the margins at a level where you can explain them. If gross margin dropped four points two years ago and recovered last year, you should know why. If you can't explain it, you don't understand the business well enough yet.

You need to have talked to the seller enough to have a sense of whether their explanation of the business matches what the numbers actually show. Sellers are almost always optimistic about their businesses. That's fine. But when the story and the financials start pointing in different directions, that gap matters.

None of this requires a CPA. It requires you to pay attention.

The Right Way to Think About It

Hiring a CPA for due diligence isn't an either/or with doing your own work. It's a complement, not a replacement. Before you make it this far in the process, do the work upfront to make sure you have the right deal. We can help at Team Rise Consulting.