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// GETTING INTHE NINETY SECONDS

How to Present a Credit Case in an Interview

A page slides across the table. You have ninety seconds, and the panel is not scoring the ratios. It is scoring the order, the commitment, and what happens when they change one fact.

BY MICHAEL SHANG · SIXTEEN YEARS IN COMMERCIAL BANKING · UPDATED

// THE SHORT ANSWER

A credit case in a commercial banking interview is presented in ninety seconds and five sentences, in a fixed order: the call first, the one number it rests on, the risk that remains, the condition that earns its place, and the question you would ask next. Then stop. The panel is scoring the order you read in, whether you committed, and what happens when they change one fact — not whether you found every ratio. The call that moves must move for a reason you can say; the two answers scored lowest are 'it depends' and 'I would want more information'.

BASIS  Practitioner judgment from sixteen years in commercial banking, set out in How Bankers Think (Highbank Press, 2026). Every borrower on this site is a composite constructed for teaching, not a client. The market is mid-market commercial lending as practised in New Zealand and Australia; where a convention differs elsewhere, the page says so.

// MAKE THE CALL

Issue 04 — Highview Industries. Same request as Issue 01 on the surface. A completely different file underneath. Your call first, then the senior banker's.

Read the file →

// 01 — WHAT THE PANEL IS SCORING

The case question looks like a test of analysis and is a test of temperament. Three things are being scored, and none of them is whether you found every ratio. The order you read in: whether you went to the request's fit and the cash before the profit and the sector. The commitment: whether you reached a call, said it first, and held it under the follow-up. And the reversal: whether you can name the one fact that would change your mind — because the panel's next question will change it. The interview page calls this the question that decides it, and it is not an exaggeration.

The site names the traces a senior interviewer listens for the Four Signals; the walkthrough below is built so that a candidate who follows it produces them without having to think about them. Completeness is not on the list. A candidate who covers twelve points in four minutes has told the panel they cannot tell which point matters, which is the one thing the seat cannot teach.

// 02 — THE FIVE SENTENCES

Ninety seconds is about five sentences, and they go in a fixed order. The order is the same one a credit paper goes in, which is not a coincidence: the panel is asking you to write one out loud.

1. The call — approve, decline, or approve with this structure. First. No preamble.
2. The number it rests on — one, and what it says about whether the money comes back.
3. The risk that remains — the one thing that could still go wrong after the structure.
4. The condition that earns its place — what you would ask for, and which risk it answers.
5. The question you would ask next — the fact you would want, and what it would change.

In the shape of a published file — the working capital request on Issue 04 — the five sentences run: I would approve the increase as asked. The cycle is growing with the sales, not faster than them, so the need is the growth and not a problem underneath it. What remains is the customer the growth depends on. I would want the concentration reported, and I would ask what the supply agreement says about volume, because that is what turns this from a yes into a structure. Nothing in that is a ratio. Every part of it is a reading, and the panel can hear the difference.

// 03 — WHY NINETY SECONDS

Because the walkthrough is not the test; it is the setup for the test. A panel that has heard your call and your number now has something to push on, and the push is where the interview is decided. Talk for four minutes and you have used the time the panel needed to find out whether you can think, and you have usually talked yourself out of the call you started with. Five sentences, then stop, then let them come at you. The silence after the fifth sentence is not a failure of preparation. It is the panel deciding what to change.

// 04 — THE CURVEBALL

They will change one fact. The top customer is forty per cent of sales instead of twenty; the season did not clear last year; the owner is sixty-eight and the son is not in the business. What they are watching is not whether your answer changes but whether it changes for a reason you can say. There are three good responses and one bad one. The call moves, and you say which sentence it moved in — “then the risk that remains is the one I would structure for, and the increase becomes a term-out of the permanent part.” The call holds, and you say why the fact does not reach it. Or the call holds but the condition changes. The bad response is the call moving without a reason, because it tells the panel the first answer was a guess.

Prepare for the curveball by asking yourself, before you speak, what would reverse your view. If you know the answer, the fifth sentence is already written, and the panel's change of fact is a question you have asked yourself. That habit is the whole of what a credit desk means by the Three Questions being asked in order; it is enough to name them, and the book is where they are taught.

// 05 — WHAT NOT TO DO

Recite the ratios. Current ratio, gearing, interest cover, margin — each correct, none read. The panel can compute; it wants to know which one matters here and why.

“It depends.” Everything depends. Say on what, then make the call that follows from the file in front of you, and let the panel change the file.

Ask for more information instead of reading what is there. A list of things you would want to know is a description of a paper you have not written. One question, at the end, with what it would change, is the seat.

Hedge. “On balance it looks broadly supportable subject to further work.” A panel reads that as a candidate who does not want to be wrong, and the seat is one where you are wrong in writing, with your name on it, several times a year.

Apologise for the call. Declining is half the job. A candidate who declines cleanly, names the comeback path and keeps the client is showing the panel the relationship half of the seat at the same time — which is why When the Bank Says No is worth reading before an interview, even though it was written for the other chair.

// 06 — WHERE TO PRACTISE

The method needs files, and the files are free. Every case drill hands you a business, three years of numbers and a request, and holds the senior banker's read back until you have committed: write your five sentences before you open it, then compare the order and the number. Read Issue 04 and Issue 01 as a pair — the same request, opposite calls — because a panel's favourite curveball is the one that turns the first into the second. The free case is one complete file in the interview's own format, with the ninety seconds written out; the case pack has four more with the curveballs a panel pivots to. And the interview quiz scores the temperament the walkthrough is built to show.

// QUESTIONS PEOPLE ASK

What is a case study question in a commercial banking interview?
A page or two slides across the table — a business, three years of high-level financials, a request — and you are asked what you would do. It is not a modelling exercise and there is no calculator. The panel wants to hear the order you read in, the call you reach, the number it rests on, and how you handle the fact they change next. Most candidates prepare for the technical questions and are surprised by this one; it decides more interviews than the technical questions do.
How long should a case walkthrough answer be?
About ninety seconds, then stop. The walkthrough is the setup for the panel's real test, which is the follow-up: they will change one fact and watch whether your call moves for a reason. An answer that runs on is an answer that has not reached a call. Five sentences — the call, the number, the risk, the condition, the question you would ask — cover everything a panel scores, and leave the room for the conversation the panel actually wants.
Should I approve or decline the case in an interview?
Whichever the file supports, and the panel usually does not mind which as long as you commit. A candidate who structures — approve, but term the permanent need and keep the line for the season — often reads better than either pure answer, because structure is what the job is. What loses the room is not the wrong call; it is no call. 'It depends' and 'I would want more information' are the two answers a panel hears most and scores lowest.
What if I do not know the industry in the case?
Say so in half a sentence and read the numbers anyway. The panel chose a composite business for a reason: the reading order does not change with the industry, and what they are testing is whether you go to cash flow, the cycle and the request's fit before you go to the sector. Knowing what a dairy payout is helps on a farm file; knowing that income is a price times a volume, and asking what moves the price, is what the seat needs. The site's guides on how banks read manufacturers, exporters, farms and developments are the sector floor.
How do I practise case walkthroughs without a case pack?
With the published drills: each hands you a file and four options, and the senior banker's read opens after you commit. Write your ninety seconds before you open the read, then compare the order and the number you chose with the senior's. The free case is a full worked file in the format the interview uses, with the ninety seconds written out; the case pack has four more with the curveballs a panel pivots to. The method on this page is the same for all of them.

// ONE COMPLETE CASE, WITH THE NINETY SECONDS WRITTEN OUT

The free case is Northmark Engineering's working capital request in full: the file, the diagnostic a senior banker actually runs, and the ninety seconds you would say out loud in the room. Free, for an email address.

Get the free case →