A bank is a business that borrows money cheap (your deposits) and lends it out expensive (loans), living on the gap. Everything on its dashboard measures three things: the gap, the safety of the loans, and the cushion for accidents. Each term below: meaning + direction (is rising good or bad?).
NPA — Non-Performing Asset. A loan where the borrower has stopped paying (90+ days overdue). For a bank, loans are its assets — an NPA is an asset that stopped performing its one job. Gross NPA % = share of all loans gone bad; Net NPA % = what remains after the safety cushion (provisions, below) is subtracted. Direction: rising NPA = bad, always. When TV says "asset quality deteriorated," this is the number that moved. India's banking stress of the mid-2010s was, in one number, gross NPAs climbing toward double digits at public-sector banks.
Provisions. Money the bank sets aside from profits in advance to absorb loans it expects to go bad — an internal insurance fund. Direction: subtle. Rising provisions cut today's profit but signal honesty about tomorrow's losses; suspiciously low provisions can mean problems being hidden, not absent. The quality measure is the Provision Coverage Ratio (PCR) — what % of bad loans are already covered by the cushion. Higher PCR = safer. A bank with 80% PCR has largely pre-paid for its known mistakes.
NIM — Net Interest Margin. The gap that is the business: interest earned on loans minus interest paid on deposits, as a % of lending assets. Indian banks typically live around 3–4%. Direction: higher = better; watch the trend. "NIMs compressed" = the gap shrank (deposits got costlier or loan pricing got competitive) — the bank's core engine lost some power this quarter.
CASA — Current Account, Savings Account ratio. What share of the bank's deposits sit in current/savings accounts — which pay the bank's cheapest interest (savings ~2.5–3%, current accounts ~0%) versus costlier fixed deposits. Direction: higher CASA = better — cheaper raw material for the lending machine, which directly protects NIM. This is why banks fight so hard for your salary account.
Credit growth / deposit growth. How fast the loan book and deposit base are growing. Direction: healthy credit growth = good, but — and this is the sector's defining tension — lending is the one business where growing too fast is a classic danger sign. Loans given in a hurry in year 1 become NPAs in year 3. A lender growing 40% while peers grow 15% deserves suspicion before applause. (This exact pattern preceded multiple NBFC blow-ups.)
CAR / CRAR — Capital Adequacy Ratio. The regulator-mandated shock-absorber: the bank's own capital as a % of its risk-weighted loans. Direction: higher = safer. Falling toward the regulatory minimum = the bank may soon need to raise capital (diluting shareholders) or slow its lending.
NBFC. Non-Banking Financial Company — lends like a bank but cannot take your deposits, so it borrows its raw material from banks and bond markets, making it more fragile when money gets tight (Chapter 18: rates rise → NBFC borrowing costs jump → NIM squeezed → the weakest break — the 2018 IL&FS episode in one sentence).
Now reread the hook: "Gross NPAs rose, NIMs compressed, but CASA improved." Translation: more loans went bad, the core profit gap shrank, but the bank attracted more cheap deposits. A mixed quarter, leaning negative. You just read bank-speak fluently.
Key Takeaway
Banks are judged on the gap (NIM, protected by CASA), the accidents (NPAs), the honesty about accidents (provisions, PCR), and the shock absorber (CAR). And uniquely in lending: growing too fast is a warning sign, not an achievement.
Think About It
Why might a bank's management be tempted to under-provision in a bad year — and which two numbers on this dashboard would quietly expose them within a couple of years?
Live Lab — Read a Real Bank
Open screener.in/company/HDFCBANK/consolidated/ and screener.in/company/SBIN/consolidated/. In their latest investor presentations (Documents section), find: Gross & Net NPA %, NIM, CASA ratio, and PCR. Compare the two side by side and write one sentence on which machine looks healthier and why. You've just done real bank analysis — the same numbers fund managers open first.