How It Works

Banking Judgment Lab publishes case drills — short composite commercial banking situations presented in a fixed format: setup, the data on the table, a four-option judgment question, the senior banker's read, and the closing. New drills are added as they are ready.

A drill is designed to be read in seven minutes and remembered in seven seconds. The seven-minute read is for understanding the specific case. The seven-second residue is what stays — a diagnostic shape, a phrase, a structural question that lodges in the back of a banker's instinct and surfaces six months later when they're reading a different file.

Drills are free. They will always be free. There is no archive paywall, no expiring access, no signup required to read them. The back catalogue stays open.

The Lab publishes two interactive tools, both free, both with no signup:

The Three Diagnosticsis a calculator that takes a borrower's basic financial inputs (revenue, EBITDA, operating cash flow, DSO, DPO, inventory days — both this year and prior year) and returns what a senior banker would read in the numbers. It applies the Three Diagnostics framework used across the Lab, but runs in sixty seconds rather than reading time.

The Interview Quizis a five-question self-assessment for candidates preparing for commercial banking interviews. Each question has four options. After picking yours, the senior banker's read appears — explaining why that choice is the senior choice and why the other answers signal what they signal.

Both tools are designed to be useful in a single sitting, not to become daily-habit products. The Lab does not maintain user accounts, does not track scores over time, and does not gamify repeat use.

The newsletter is the same content as the website, delivered to inbox the morning a new drill publishes. Same words. Same case. Same senior banker's read. The choice between reading on the website or in email is purely a delivery preference.

It is free, and the unsubscribe link is at the bottom of every email. The Lab does not share email addresses with anyone. It does not run cross-promotions, sponsorship slots, or affiliate recommendations in the newsletter — what's in the newsletter is what's on the website.

If a reader stops finding the material useful, the right move is to unsubscribe. The Lab would rather have an engaged reader of one hundred than a forgotten reader of one thousand.

The Lab is written for three readers:

Finance studentspreparing for commercial banking interviews — particularly those targeting credit-focused or relationship-banker roles, where the entry test is whether they can read a borrower's file the way the senior banker on the panel reads it. The drills and the Interview Quiz are calibrated for this reader.

Junior bankers in their first eighteen months on a commercial book — who have done the technical training but are still building the instinct that distinguishes a strong analyst from a banker. The drills and the Three Diagnostics calculator help shorten the calibration period.

Finance professionals who work alongside commercial banks: lawyers structuring facility documents, accountants preparing borrower information memoranda, corporate executives presenting to their bank for the first time. For this reader, the Lab is diagnostic from the other side of the table — what does the banker on the receiving end of your pitch actually look at, and what makes them lean in versus pull back.

Three readers. Different angles on the same question: how does a commercial banker form judgment, and how do you tell when that judgment is actually being formed (versus when the bank is just running a checklist).

There are no daily emails, no premium tier with extra content, and no breaking-news alerts. Each drill is written to be substantive rather than repetitive.

The Lab does not ask for engagement metrics, completion percentages, or commitment statements. A reader who skims one drill in twelve and learns one thing has done what the Lab is for. A reader who reads every drill and submits judgment on each will get more — but the model is not built around either of those profiles.

What the Lab does ask is intellectual honesty when reading the cases. The drills work as a test of the reader's own banking instinct against the senior banker's read — and the test only works if the reader actually picks an answer before scrolling to the senior's response. Treating the cases as scrollable prose rather than as structured judgment exercises gets some of the value but not most of it.

Most of the Lab is free, indefinitely. Every drill, every diagnostic tool, the newsletter — all free, no signup walls, no expiring trials.

The Lab Vault publishes deeper resources for readers who want them: industry-specific Banking Toolkits (PDF + Excel diagnostics, from US$19 each) and standalone Case Packs (multiple worked cases at greater depth, from US$39).

The Lab Vault is for readers who have already found the free material useful, and want a deeper version they can keep, print, and use offline. It's not gated content; it's a different product. Buying one doesn't unlock anything else; not buying doesn't gate anything else. The free content stays free.

The simplest way to think about it: the website is the Lab. The Vault is the bookshop attached to the Lab. Anyone can visit the Lab without ever stepping into the bookshop. Anyone who does step in is buying a specific book, not a subscription.