Friday, October 30, 2026

Only 30% of US owners finished 2025 with profits above expectations, down from 57% the year before. Here's the real reason growing revenue stopped meaning growing margin.

Ask most SME owners how much of their revenue comes from their single biggest customer, and you'll get a rough guess, usually followed by "but we're fine, they've been with us for years." That's precisely the sentence owners said about the customer who left.

US accounting standards (ASC 280-10-50-42) require public companies to separately disclose any customer that makes up 10% or more of revenue — not because 10% is inherently dangerous, but because regulators decided that's the threshold worth telling investors about. SME owners rarely have to disclose anything to anyone, which is exactly why customer concentration quietly becomes someone else's problem to notice — usually a bank, a buyer, or an owner's own cash flow, at the worst possible moment.

The Math Most Owners Never Actually Run

Run it once and it's uncomfortable in a way no survey needs to prove. A business with four roughly equal customers loses 25% of revenue the day one leaves. A business with one customer at 40% of revenue loses almost half overnight — not because the market turned, not because the team underperformed, but because one phone call happened. That's not pessimism. It's arithmetic every SME owner is running without realising it, every day they don't check the number.

Three Moves That Actually Reduce the Risk

  • Know the real number today. Calculate what percentage of the last twelve months' revenue your top one, three and five customers represent — not a guess, the actual figure.
  • Set a written cap for any single customer. Most advisers land somewhere between 15% and 25%, depending on how replaceable that revenue would be. Treat any new deal that would breach it as a conscious decision, not an accident.
  • If you're already over the cap, grow everyone else faster. The fix isn't firing the big customer — it's a genuine new-customer push, not just servicing the big account even better.

"I have grown my business 5x since working with Kevin. Everything Kevin told me to do was the complete opposite of what I had been doing. Working with Kevin has truly been a complete game changer."

— Richard, Chem Suppliers

Why Owners Who Know This Still Haven't Run the Number

The biggest customer is usually also the easiest revenue — the one that doesn't need chasing, the one where the relationship already exists. Deliberately spending time and money on smaller, harder customers to dilute dependence on the easy one feels like working against your own instincts. It is, which is exactly why most owners need someone outside the relationship to make the case for diversifying before the easy customer makes the decision for them.

Key Takeaways

  • Calculate your top one, three and five customers' real share of last year's revenue.
  • Set a written concentration cap, typically 15–25%, and treat breaches as a decision, not a drift.
  • Grow the rest of your customer base deliberately if you're already over the cap, rather than deepening the dependency.
  • Get an outside view — the easy customer is the hardest one to diversify away from on your own.

If you can't say your top customer's share of revenue to the nearest 5% right now, that's the first number we find together.

Friday, October 30, 2026

Only 30% of US owners finished 2025 with profits above expectations, down from 57% the year before. Here's the real reason growing revenue stopped meaning growing margin.

Friday, October 30, 2026

43% of US owners have hidden business stress from their own family. Here's why carrying it alone is the actual problem, and why Kevin hired his own coach.

Friday, October 30, 2026

If your business stops the moment you do, the problem isn't your team. It's how many of their problems you're still quietly carrying. Here's the fix, from a 1974 HBR classic.

Friday, October 30, 2026

One client had 123 customers. Eight of them delivered 42% of total revenue. Here's the A-B-C-D grading system that tells you which customers actually matter.

Friday, October 30, 2026

Nearly three in ten US owners name unpredictable demand as a top stressor. Here's the always-on marketing system (RACE) that replaces the feast-and-famine cycle.

Friday, October 30, 2026

If a prospect asked what makes you different, could you answer in one sentence? Here's the three-question positioning map that gets you there before your next pitch.

Thursday, October 29, 2026

Most sales die at silence, not at no. Here is how to build a first AI agent for sales follow-up in five steps, with a human in charge and NZ privacy and spam rules covered.

Thursday, October 29, 2026

AI speeds up whatever you point it at. Here is how to match it to the one link in your business that is actually limiting growth, before you spend on tools.

Thursday, October 29, 2026

36% of NZ SMEs use AI, but the smallest firms trail by 34 points. Here is a four-question test for choosing your first AI job, and a 30-day plan.

Thursday, October 29, 2026

Nearly half of SME owners say their business doesn't have a money problem — it has a time problem. Here's the 90-day Freedom Plan to fix it.

Thursday, October 29, 2026

A business with four equal customers loses 25% of revenue the day one leaves. Here's the customer-concentration math most SME owners never run, and three moves to fix it.

Thursday, October 29, 2026

A lot of owners try the wrong format, see no shift, and decide coaching doesn't work for them. Here's what a peer room is actually good for, what 1:1 coaching is actually good for, and a 3-check way to pick.

Thursday, October 29, 2026

HBR's review of meeting research found about 70% of meetings kept employees from the work they were meant to enable. Here's Verne Harnish's meeting rhythm, sized for an SME before year-end.

Thursday, October 29, 2026

Reps close 2.9x more deals at month-end and lose 11.4x more margin doing it, one major study found. Here's why the plan is the problem, not the rep, and three fixes.

Thursday, October 29, 2026

45% of US consumers used AI for a local business recommendation this year, up from 6% last year. Here's why schema markup won't fix your AI visibility, and what will.