Why banks need their own rulebook
When you study most companies, you look at the products they sell and the profit they keep. Banks are different animals. Their whole business is money itself — taking it in and lending it out. Because of this, some of the usual checks can mislead you, and a few special ones matter far more. If you plan to own bank shares (and many investors do), it is worth learning the handful of things that truly count.
What a bank actually does
In plain terms, a bank gathers money from people who deposit savings, and lends that money to others who need it. It pays a small amount of interest to depositors and charges a larger amount to borrowers. The gap between the two is its core earnings. So a bank's health depends on two things above all: are its loans being repaid, and does it have enough of its own money set aside for safety?
Book value matters more here
For a bank, the book value per share — what each share is worth based on the bank's own money after subtracting what it owes — is an especially useful guide. Many investors compare a bank's share price against its book value to judge whether it looks cheap or expensive. It is not the only number, but for banks it carries more weight than it does for, say, a factory whose real value sits in machines and brands.
The big danger: loans that go bad
Here is the single most important thing to check in a bank. When borrowers stop repaying, those become bad loans (you will often hear them called non-performing loans). A bank swimming in bad loans is like a bucket with holes — money leaks out no matter how busy it looks. Look for the share of loans that have gone bad: a low, stable figure is healthy; a high or rising one is a serious warning sign.
Does the bank have a safety cushion?
Banks are required to keep a cushion of their own money in reserve, so they can absorb losses without collapsing. The stronger this cushion, the safer the bank in hard times. You do not need to master the technical measures — just look for reassurance, in the annual report or the news, that the bank comfortably meets the required safety levels rather than scraping by at the minimum.
Steady earnings and dividends
Good banks tend to earn steadily and reward shareholders with regular dividends. Wild swings in profit from one year to the next are less common in a well-run bank and can hint at trouble or risky lending. A bank with calm, growing earnings and a dependable dividend habit is usually a more comfortable hold than one chasing rapid, lumpy growth.
A simple checklist for a bank share
- Are bad loans low and stable, not high or rising?
- Does the bank comfortably meet its required safety cushion?
- How does the share price compare with the bank's book value?
- Are earnings steady rather than wildly up and down?
- Does it pay a regular, dependable dividend?