Win Your Valuation with the sustained growth rate formula

You are not selling a company. You are selling a future a buyer can bank on. Buyers don’t pay for dreams. They pay for growth that funds itself. The sustained growth rate formula is the lens that tells them if your future is real.

If you’ve been sprinting for years, this is when you check your true speed limit. Not the speed you wish you had, the speed your cash and returns can actually fund. That difference decides your price.

Why this matters now

When buyers dive into your numbers, they ask one question: Can this growth continue without fresh equity or scary debt? If your plan only works when you inject cash, stretch suppliers, or gear up, the deal changes fast. The discount shows up quietly, lower multiple, tougher earn-outs, more holdbacks.

Here’s the punchline: the sustained growth rate is the highest growth you can run at while keeping your capital structure steady. If your plan sits above that limit, either fix the plan or fix the engine.

What the formula really says

In plain English, sustained growth equals your return on equity multiplied by the share of profits you keep and reinvest. It’s ROE times your retention ratio. Keep every dollar of profit and your growth potential equals your ROE. Distribute half your profit and you can only grow at half your ROE, unless you raise capital.

Example: ROE is 20% and you retain 60% of profit. Your sustained growth is about 12%. That’s the speed you can hold without raising more equity or increasing leverage relative to equity.

Prefer ROIC? Same idea. Growth funded by reinvesting free cash at your true reinvestment returns is safe. Growth that needs outside money to stay upright is not.

Buyers will go deeper. They’ll recut ROE to strip one-offs. They’ll redefine “retention” to mean true reinvestment after fair owner comp and maintenance capex. They’re not being difficult. They’re isolating the core engine.

How buyers use this in diligence

A smart buyer maps three lines: your historic growth, your sustained growth from the formula, and the plan you’re selling. If historic growth sits well above sustained growth, they’ll hunt for fuel that runs out.

They will check:

• Working capital. Are receivables stretched? Did inventory swell? Did suppliers fund the sprint?
• Marketing and demand. Were there bursts that spiked once and faded?
• Debt. Did you quietly add leverage to chase volume?

None of this is a moral failing. It’s just not durable.

They will anchor valuation to the lower of your sustained growth rate and your proven, repeatable growth. If your plan promises 25% but the formula says 12% and your three-year average (net of one-offs) is near 12%, they’ll price 12. Everything above that gets discounted as hope.

How to move your sustained growth up before you sell
You have two levers: returns and reinvestment.

Lift ROE:

• Price and mix. Don’t chase volume that drags down contribution. Move into higher-margin segments. Prune unprofitable SKUs. Tighten discounting. The quickest sustained growth is margin that sticks.
• Asset turns. Sweat plant and tools. Optimise route density, store productivity, or utilisation, whatever “capacity” is in your world.
• Working capital. Shorten your cash conversion cycle. Collect faster with deposits or milestone billing. Tighten credit terms with real value. Right-size inventory with reorder logic, better forecasting, and vendor-managed stock. Pay suppliers on time, not early.

Raise retention:

• Fund projects with fast, measured paybacks. Require unit economics and post-mortems.
• Cut vanity spend that hugs revenue but never shows up in contribution or cash.
• Be intentional with distributions. In the final 12–24 months, trim special draws that starve reinvestment. Show that retained earnings went into high-return uses.

Create a simple capital allocation rule: if a dollar can’t beat your hurdle, it doesn’t get funded. Discipline is the cleanest way to climb your sustained growth without hand waving.

Show your work in the data room

You don’t need a fancy model. You need clarity.

• One pager for the last three years: ROE, retention ratio, and the sustained growth that implies. Reconcile the gap to actual growth with short, honest notes.
• Forward plan tied to funding sources: which growth blocks are powered by retained profit, which use modest term debt with comfortable coverage, which are funded by working-capital unlocks. When growth is tied to cash that already exists, trust goes up and risk discounts shrink.
• Capital structure policy: the leverage you’ve run at and intend to maintain. Make it clear you’re not counting on a gear change to hit the number.

A quick field check you can run today

• If you stopped taking distributions for the next year, how fast could you grow using only your own cash?
• If you had to hit your plan without stretching payables or delaying vendor payments, does it still hold?
• If your ROE drops five points in a tougher market, does your plan survive without new equity?

If any answer makes you flinch, you’ve found your pre-sale work. Better to close the gap now than explain it under fluorescent lights in a diligence room.

A story you may recognise

A founder I know posted 40% growth for two years. The market loved it. Beautiful deck. Big pipeline. Then the buyer asked, “How much of that growth could you have achieved without more debt and stretched suppliers?”

They recut the numbers. Sustained growth: 14%. The deal didn’t die. It resized. The multiple tightened, the earn-out got heavier, and the founder walked with less than he could have. Six months of work. One missing idea.

Don’t let that be you. Bring a plan that sits inside your sustained growth and you look like a safe bet with upside. Bring a plan that needs outside fuel just to stay upright and you look like a project.

Key takeaway

Buyers pay a premium for growth you don’t have to finance. The sustained growth rate lets you prove you have it.

Reflective next step

If you had to grow next year using only the cash your business generates, what would you change this week?

One unforgettable shift

Think like a buyer. Set your plan inside the speed your cash and returns can fund, and show exactly how you’ll stay within that limit. That’s how you sell a future they can trust. That’s how you get paid for it.