Carrier Concentration: The Revenue That Can Vanish in One Email

You know your biggest customer's name. In restoration it usually isn't a homeowner. It's a TPA, a carrier program, or one adjuster whose calls keep the board full. If that relationship is a third of your revenue, the accounting profession already has an opinion about it, and it's blunter than anything your banker will say to your face.

What the accounting standard actually says

There's a piece of GAAP called ASC 275, Risks and Uncertainties. It applies to financial statements prepared under U.S. GAAP generally, not only to public companies. It requires you to disclose a concentration when three things are true: the concentration exists at the balance sheet date, it makes you vulnerable to a severe impact in the near term, and it's at least reasonably possible that the triggering events occur in the near term.

Then comes the sentence. ASC 275-10-50-18(a) covers concentrations in the volume of business transacted with a particular customer, and says the potential severe impact can come from "total or partial loss of the business relationship." It then removes the judgment call entirely:

Always. Not if the program is under review. Not if there's been friction. And the defined terms are specific: "near term" means not exceeding one year from the date of the financial statements, and "reasonably possible" means more than remote but less than likely.

So GAAP's default assumption about your best carrier relationship is that losing it inside twelve months is a live possibility. The only open question left is whether losing it would hurt badly enough to be worth telling anyone.

Why restoration builds this faster than other trades

Most businesses accumulate customer concentration slowly. Restoration accumulates it by accident, quickly, because the program relationship is genuinely good work at the start. Predictable volume. No marketing spend. A scheduler who fills next week for you.

So the shop reorganizes around it. You hire to the program's volume, buy equipment to meet the program's response-time requirement, staff an admin who knows the program's portal, and accept the program's pricing because the volume justifies it. Every one of those decisions is defensible on its own. Together they convert a customer into a landlord.

And a landlord can evict by email. A program change, a de-listing, a revised vendor scorecard, an acquisition upstream: none of these require anyone to be unhappy with your work, and none of them arrive with ninety days' notice.

There's a second layer most owners miss. Concentration isn't only a revenue risk. If one payer is 40% of revenue, that payer is also roughly 40% of your open receivables, so a payment slowdown at a single company hits your revenue and your cash forecast at the same moment, from the same cause. Diversification isn't just about next quarter's work. It's about not having one balance sheet exposure wearing two hats.

And a program you can't afford to lose is a program you can't negotiate with, which means concentration also sets the margin on the revenue you keep.

There's no bright line, and that's the problem

Owners sometimes quote a 10% rule: any single customer at 10% or more of revenue has to be disclosed. That rule is real, but it's ASC 280-10-50-42, and it applies to public entities. As a private restoration contractor, you don't get a percentage. You get judgment. Which means nobody flags the number for you until your surety, your lender, or a buyer flags it, and by then it's priced into whatever they're offering you.

Five moves

1. Measure it monthly. Revenue by payer as a share of trailing-twelve-month revenue, plus A/R by payer. Two numbers, one report. Most shops can't produce it, because jobs are tracked under the homeowner's name rather than the party that actually sends the work and writes the check.
2. Set a line before you're near it. Pick a share of revenue for any single payer that you treat as a ceiling, and make crossing it a trigger to work your other channels rather than a reason to celebrate the month.
3. Price the concentration honestly. A program job at six points of margin and a direct job at thirty are not the same job. If the program's share is climbing because it's the easiest work to say yes to, you're buying revenue with margin.
4. Build the second channel before you need it. Direct-to-homeowner, agent and adjuster relationships, commercial, adjacent services. A channel takes a year to build. A de-listing takes a day.
5. Put it in the financial statements. If your CPA prepares reviewed or audited statements, this disclosure may already be required. ASC 275-10-50-20 says it must be "adequate to inform users of the general nature of the risk," and it explicitly does not stop you from also saying you don't expect to lose the relationship. Your surety and your bank will form a view either way. Better they read yours.

That's the whole trap. The number that would have warned you is one report your accounting system can produce in an afternoon, and almost no restoration shop runs it, because nothing is currently going wrong. Tracking payer concentration next to your 13-week cash flow forecast is roughly fifteen minutes a month, and it's the difference between choosing to reduce a dependency and finding out you had one.

If you want a second set of eyes on where your revenue actually comes from and what it would cost you to lose it, that's a conversation worth having.

General guidance for restoration and reconstruction owners — not a substitute for accounting, legal or tax advice tailored to your company's numbers. Confirm the disclosure requirements that apply to your financial statements with your CPA.

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