Almost every owner who comes to me with a growth problem has already decided what the problem is. It is usually marketing. Occasionally, the website. Once in a while, a competitor. They want help executing a solution to a diagnosis they made themselves, and in my experience that diagnosis is wrong more often than it is right.
Here is the uncomfortable truth that most business advice soft-pedals: growth problems are rarely where the pain is. Pain shows up at the end of the chain, usually revenue, and owners naturally blame whatever sits immediately upstream of it. But a business is a sequence of dependencies, and a constraint anywhere in that sequence presents as weak sales. Spending on marketing to fix a positioning problem, or on sales headcount to fix an operations problem, is the most common and most expensive mistake I see.
The Business Success Formula is the diagnostic I have used across more than 2,000 businesses since 2014 to find where the actual constraint sits before anyone spends money. This piece explains the formula in plain terms, walks through every element, identifies the seven specific constraints it exposes, and shows you how to score your own business.
The formula
PM + (PS × (EO − (C+E+P+T)))
In words: a profitable market, plus your product or service multiplied by your operational effectiveness, minus the external forces acting against you.
Two features of the notation carry the entire diagnostic weight.
The first is that PM is added and everything else is multiplied. A profitable market is a precondition. Without it, nothing downstream will save you, and no amount of operational excellence will convert a market that does not want what you sell.
The second is that PS and EO are multiplied rather than added. In multiplication, a weak term drags the whole product down in a way that a strong term cannot compensate for. An excellent product with poor operations does not average out to an acceptable result. It performs at the level of the weaker term. This is why owners who keep improving the thing they are already good at see so little movement, and it is the single most useful idea in the formula.
The seven constraints the formula exposes
Break the formula into its working parts, and it surfaces seven specific places a business gets stuck. Almost every growth problem is one of these, and naming which one is the whole job.
- No profitable market (PM). People do not want this, or will not pay enough for it. The most fundamental constraint and the most expensive to ignore.
- A weak product or service (PS). The offer does not solve the problem well enough, or not at a price that works.
- Adoption friction (PS). The product is good but too hard to buy, switch to or start using.
- Marketing (inside EO). The right people never hear a message they recognise as being about them.
- Sales (inside EO). Interest arrives and does not convert, or converts only when the founder personally runs it.
- Operations (inside EO). You cannot reliably deliver what you sell without heroics.
- Finance (inside EO). You do not know your numbers early enough to act on them.
The external forces — competition, economy, politics, and technology — sit outside these seven as a drag on all of them. The discipline is to determine which single constraint is binding, because that is the one whose fix yields several times what the others would.
PM: Is there a profitable market
Not a large market. A profitable one. These are different, and confusing them is how owners spend two years on a business that was never going to work.
A profitable market means people who have the problem, know they have it, are already spending to solve it, and can be reached at a cost lower than what they are worth to you. Market size is almost irrelevant by comparison. A £40m market of people actively buying beats a £4bn market of people who would theoretically benefit.
How to test it. Name ten organisations or individuals who have paid you, or a competitor, for this specific thing in the last twelve months. If you cannot fill the list, your constraint is PM, and no marketing spend will fix it.
PS: Is the product or service right
PS is whether what you sell solves the problem, at a price that works, in a form the buyer can adopt.
Owners systematically overweight product quality and underweight adoption friction. A product can be technically superior and still fail because switching costs are high, the buying process spans three departments, or onboarding takes eight weeks, which the customer cannot spare. In business-to-business especially, the reason a good product does not sell is far more often friction than quality.
Pricing sits here too, and it is the most underused lever for UK SMEs because it flows straight to the bottom line without requiring a single extra customer.
How to test it. Take your last ten lost deals or churned customers and write the actual reason for each, in the customer’s words. A price pattern means look at value communication before discounting. A friction pattern means your constraint is PS, not marketing.
EO: effective operations
EO is where most established SMEs are actually constrained, and it is the term owners least enjoy examining. It breaks down as Marketing × Sales × Operations × Finance.
The multiplication matters again. These four functions do not average. Excellent marketing feeding a sales process that loses half its leads produces a business worse than the sum of its parts, and the owner usually responds by buying more marketing.
Marketing is whether the right people hear a message they recognise. Most SME marketing fails at recognition, not reach.
Sales is whether interest converts, and whether the process works without the founder running it.
Operations is delivering reliably without heroics; heroics are a warning sign, not a virtue.
Finance is about knowing your numbers early enough to act; accounts arriving six weeks after month-end are a record, not a control.
How to test it. Score each of the four out of ten and multiply. A business scoring 8, 4, 7, and 6 has an EO of 1,344 out of a possible 10,000. The weak term is sales, and improving marketing from 8 to 9 increases the total by 168, while fixing sales from 4 to 7 increases it by 1,008. The arithmetic makes the priority obvious in a way intuition does not.
C+E+P+T: the external drag
Competition, economy, politics and policy, and technology. Forces that undermine your effective operations, regardless of how well you run the business.
Owners make two opposite errors. Some ignore external factors and treat every setback as an internal failing, which is demoralising and inaccurate. Others blame everything on external conditions, which is comforting and equally inaccurate.
The environment for UK SMEs is genuinely mixed rather than uniformly hostile, and precision matters. Gross SME bank lending rose 9 per cent to £68bn in 2025, the second highest level in 13 years [1]. At the same time, 36 per cent of finance applicants received no facility at all through the end of December 2025 [2]. Read as external drag; that is not a story about capital being unavailable. It is a story about selection becoming harsher, a different problem requiring a different response.
How to test it. For each of the four, write one sentence about the specific effect on your business this year and one about what you can control about it. What you cannot control belongs in your planning assumptions. What you can belongs in EO, where it becomes actionable.
Reading the diagnosis
Once you have scored the terms, the formula tells you what to do with uncomfortable clarity.
If PM is weak, stop. Do not market, hire or raise. Validate demand or change the market. Nothing else works.
If PM is sound and PS is weak, the work is product, pricing or friction. Marketing spend here amplifies a message about something people have already decided not to buy.
If PM and PS are sound and EO is weak, find the lowest of the four sub-terms and fix that one. Not all four. The multiplication means that concentrated effort on the weakest term yields several times what spreading effort does, and this is the most common situation in established SMEs.
If everything is sound and the external drag is heavy, the answer is usually positioning or patience rather than effort.
The mistakes owners make applying this
Scoring generously. Owners inflate the terms they enjoy and the terms they are avoiding, for different reasons. Score the term you least want to look at first, and have someone outside the business score it too.
Fixing the strongest term. The failure the multiplication is designed to expose. Improving what you are already good at feels productive and moves almost nothing.
Treating it as a one-off. The constraint moves. Fixing sales and operations becomes binding, because you are now selling more than you can deliver. Rescore quarterly.
Confusing a symptom with a term. Cash flow problems are almost never a finance constraint. They are usually an operations or sales constraint presenting as a finance symptom.
How to run this on your business this week
- Write the PM test. Ten named buyers who have paid for this in the last twelve months. Fill it or accept the constraint.
- Review ten lost deals. Actual stated reasons, in the customer’s words. This gives you PS.
- Score the four EO functions out of ten and multiply. Do it with your team separately, then compare. The disagreements are the most informative part.
- Write four sentences on external drag. One per factor, naming a specific effect rather than a general condition.
- Identify the single lowest term across the whole formula. One term, not a list.
- Commit one quarter and a defined budget to that term alone. The discipline is in what you do not do.
- Rescore at the end of the quarter. Expect the constraint to have moved. That is the system working.
The principle underneath all of this
Businesses do not fail at everything. They fail at one thing, and then everything downstream of it looks broken. The value of a formula is not that it produces a number. It is that it forces you to look at the parts of your business you have been avoiding, and it makes the arithmetic of where to spend your next pound and your next quarter impossible to argue with.
Most owners already suspect where their constraint sits. What they lack is a structure that makes ignoring it harder than facing it.
Want the formula scored for your business in a few minutes? Take the free Business Health Check, which scores your business against every term in the formula and shows you the single constraint to fix first. For the full 19-element diagnostic and the tools to act on it, the Growth Operating System carries the complete system. Or book a conversation to have the diagnosis done by someone with no stake in the answer. SGI has applied this diagnostic across more than 2,000 businesses in 47 industries since 2014.
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Frequently Asked Questions
What do the letters in the Business Success Formula stand for?
PM is a profitable market, PS is your product or service, and EO is effective operations, which itself breaks down as Marketing × Sales × Operations × Finance. C, E, P, and T are the external forces of competition, economy, politics and policy, and technology that subtract from your effective operations.
Why is PM added rather than multiplied?
Because a profitable market is a precondition rather than a performance variable. If it is absent, the business does not work at any level of execution. Adding it reflects that it either exists or it does not, while the multiplied terms reflect performance that compounds.
How is this different from a SWOT analysis?
A SWOT produces four lists and no priority. The formula produces a single constraint and an arithmetic case for addressing it first. The multiplication is what makes it a diagnostic rather than an inventory.
Can I apply this to a pre-launch business?
Yes, and it is arguably most valuable there, because it forces the profitable-market test before you spend anything. A pre-launch business that cannot name ten people who already pay for this has found its constraint before incurring a cost.
How often should I rescore?
Quarterly for a business in active growth, and immediately after any significant change in the market or the team. The constraint moves as you fix things, and continuing to work on last quarter’s constraint is a common way to waste a year.
What if two terms score equally low?
Start with the one furthest upstream, because upstream constraints distort your ability to measure downstream ones. A weak profitable-market score makes it almost impossible to judge whether your sales function is genuinely underperforming.
References
- British Business Bank, Small Business Finance Markets Report 2025/26, March 2026. https://www.british-business-bank.co.uk/about/research-and-publications/small-business-finance-markets-report-2026
- BVA BDRC, SME Finance Monitor: 3-month rolling analysis to end December 2025, January 2026. https://www.bva-bdrc.com/sme-finance-monitor/
- Office for National Statistics, Business demography, UK: 2024. https://www.ons.gov.uk/businessindustryandtrade/business/activitysizeandlocation/bulletins/businessdemography/2024
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Kurt Graver is the founder and CEO of SGI Consultants, a business consultancy that has helped over 2,000 entrepreneurs establish successful startups using systematic business development methodologies. An accountant with an MBA and 25 years of commerce and consultancy experience, Kurt specialises in strategic planning, market analysis, and sustainable business growth