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.

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.

Sunday, October 04, 2026

Most SME growth plans are really just wishlists with a due date. Here is the two-question strategic choice cascade that turns good ideas into an actual strategy.

Sunday, October 04, 2026

Burger King sold Whoppers for one cent, but only within 600 feet of a McDonald's. Here is the small-business version of that play, for under $5k.

Sunday, October 04, 2026

Customers rank quality and service three times higher than price, yet a third of marketers admit they can't say what makes their brand different. Here's the three-step audit that fixes the real problem before you touch your price list.

Sunday, October 04, 2026

Most growth plans start with finding new customers. The cheapest lever is usually already inside the transaction happening right now - here's the Checkout Audit that finds it.

Sunday, October 04, 2026

Most owners call a coach only once something's broken. The data on mentored businesses says the real value compounds earliest - here's the Two Doors test for deciding when.

Sunday, October 04, 2026

Owners feel busy all day and still don't move the business forward. The research says task-switching is the hidden cost - here's the Three-Block Day that gets the best hours back.

Sunday, October 04, 2026

Owners chase new leads every Q4 while a cheaper, warmer list of past customers sits untouched. Here's the four-step Win-Back Sequence and the real economics behind it.

Sunday, October 04, 2026

SME websites and pitches default to telling their own story. The research says customers skim past most of it looking for themselves - here's the StoryBrand framework that fixes it.

Sunday, October 04, 2026

Most SME growth plans default to out-competing everyone else on the same crowded turf. Blue Ocean Strategy's own data says that's the lower-profit path - here's the four-question grid that finds the faster one.

Sunday, October 04, 2026

Most SME owners blame a lost customer on price. New 2026 research says it is almost always one unresolved issue instead. Here is the three-step audit to find your real loyalty leak.

Sunday, October 04, 2026

Revenue is not the same as profit, and a small slice of your customer base may be quietly cancelling out your best accounts. Here is how to find out which ones.

Sunday, October 04, 2026

The coaching industry has more than doubled since 2016 to over 232,000 coaches. With that many choices, here is the single question that tells you who is worth hiring.

Sunday, October 04, 2026

AI is saving small business owners 10 to 13 hours a week, and most have no idea what they gained. Here is the four-question method for pointing AI at the hours that matter.

Sunday, October 04, 2026

You nailed the pitch and the buyer loved it, then the deal went quiet. The reason is usually a meeting room you were never invited to. Here is how to sell to a buying committee you cannot see.

Sunday, October 04, 2026

Customers don't buy products, they hire them to do a job. Here is the framework that explains why an inferior competitor keeps outselling you, and what to fix in your marketing today.