Problems › Too Dependent on One Customer › Banks & Financial Services
Concentration is only a problem in proportion to how easily the customer could leave, which is a question about switching costs rather than about percentages. This page works through it for banks and financial services firms specifically — including an unedited excerpt from a real analysis of a bank.
Concentration is only a problem in proportion to how easily the customer could leave, which is a question about switching costs rather than about percentages. The version of this question that applies to banks and financial services firms is not the generic one. The branch network is simultaneously the deposit moat and the cost problem — and the relationship knowledge sits in six people close to retirement — so an answer that ignores efficiency ratio will be confidently wrong. The analysis has to start from cost of funds and origination per banker rather than from revenue.
A customer at 40% of revenue is dangerous or fine depending entirely on the structure underneath. If they can replace you within a quarter, that is an existential exposure. If replacing you means re-engineering their operation, it is a strong position that happens to look concentrated.
The trap is that concentration usually comes with worse economics — the large customer negotiates harder, demands more service and pays later — so the risk and the margin damage arrive together. Diluting concentration by growing elsewhere is slow; the faster lever is usually repricing the dependency to reflect the risk being carried.
It is also worth separating revenue concentration from contribution concentration. They can point in opposite directions, and the second is the one that would actually hurt.
These three together are the signature. One on its own usually points somewhere else.
✓ One customer exceeds a quarter of revenue
✓ That customer has materially better terms than everyone else
✓ Losing them would require immediate cost action rather than a plan
The move that usually makes it worse. Chasing volume elsewhere to dilute the percentage, which adds cost while leaving the dependency intact.
It is for you if you run or finance a bank and one customer exceeds a quarter of revenue. It is the situation where the numbers are available but nobody has put them in an order that produces a decision.
It is not for you if Percision is the wrong tool if you already know the answer and only need execution capacity, or if the business is pre-revenue — then the constraint is evidence about the market, not analysis of your own figures. Percision is not a lawyer, tax advisor, auditor, licensed appraiser, clinical or regulatory filer, or an AI implementation shop. It does not do HR casework, creative-only brand work, or impersonate a named consulting firm. It is a strategy analysis engine — not a template library. Also wrong if you need facilitation, politics, or someone to sit with a lender or buyer. Those are human jobs.
Percision is not a lawyer, tax advisor, auditor, licensed appraiser, clinical or regulatory filer, or an AI implementation shop. It does not do HR casework, creative-only brand work, or impersonate a named consulting firm. It is a strategy analysis engine — not a template library.
Below is an excerpt from a real run of this analysis on a bank. It is a sample profile rather than a customer, and it is unedited engine output — this is the format you get, on your own numbers.
The subject is Harborline Financial Group, a sample company profile used for testing rather than a customer — $3.1B commercial lending book, $410M of deposits.
Excerpt from a real Percision run · Customer Value Architecture · sample company profile
The move. Turn the 71% overlap into a sticky, data-driven treasury platform that raises switching costs and extends the relationship moat.
The leak it closes. Reduces operating-account attrition risk by raising switching costs; offsets 34%→22% non-interest-bearing share decline
The assumption it rests on. 50 pilot customers will adopt SaaS at $180–$420/month within 90 days of launch — the engine put the probability at 0.75.
| Investment required | $2.4–3.0M development (6 FTE × 24 months) + $0.8–1.2M 2027 core-migration integration = $3.2–4.2M total |
| Expected return | Risk/Reward 7.4×; NPV $3.1–4.2M on $3.2–4.2M investment within 5 years |
| Revenue, year 1 | $180K MRR (50 pilot customers) |
| Revenue, year 2 | $720K MRR (200 customers) |
| Revenue, year 3 | $1.8M MRR (500 customers) |
| Exit criteria | Kill the move if pilot converts <25 customers or MRR <$60K by Month 9; reallocate remaining budget to SBA 7(a)/504 desk or insurance referral partnership |
This is one move out of a full analysis. Read a complete report — every page, no email required.
This question routes to Proprietary EFF Methodology, one of 29 engagements the platform runs. For banks and financial services firms it works through efficiency ratio, cost of funds, origination per banker and deposit concentration, then produces the sequence rather than a list of options — which move first, what it funds, and the observation that would say the sequence is wrong.
You watch the analysis get built before paying anything. Read a complete report here if you would rather see the depth first.
There is no threshold that means much on its own. What matters is how quickly they could replace you and what happens to your fixed costs if they do. Both are answerable.
Rarely on concentration grounds alone, and often on margin grounds. If the largest account is also the worst-priced, the concentration problem and the margin problem have the same fix.
Increase what it would cost them to leave, and reprice the exposure. Growing a second segment is the right long answer and does not help within the notice period you actually have.
Materially, yes. The branch network is simultaneously the deposit moat and the cost problem — and the relationship knowledge sits in six people close to retirement — which changes both the diagnosis and the order of the fixes. The metrics that decide it here are efficiency ratio, cost of funds, origination per banker, and an answer built on industry-general benchmarks will usually point at the wrong one first.
Less than most people expect. Your last twelve months of revenue and cost split the way you already split it, plus whatever you hold on efficiency ratio and cost of funds. The analysis is explicit about what it is assuming where your data stops, which is more useful than waiting for numbers you may never have.
Percision is the wrong tool if you already know the answer and only need execution capacity, or if the business is pre-revenue — then the constraint is evidence about the market, not analysis of your own figures. Percision is not a lawyer, tax advisor, auditor, licensed appraiser, clinical or regulatory filer, or an AI implementation shop. It does not do HR casework, creative-only brand work, or impersonate a named consulting firm. It is a strategy analysis engine — not a template library. Also wrong if you need facilitation, politics, or someone to sit with a lender or buyer. Those are human jobs.
Percision is not a lawyer, tax advisor, auditor, licensed appraiser, clinical or regulatory filer, or an AI implementation shop. It does not do HR casework, creative-only brand work, or impersonate a named consulting firm. It is a strategy analysis engine — not a template library.
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