Understand how a bank actually makes money.

How a bank turns other people's deposits into profit, what the regulator forces it to hold, what bad loans do to the spread, and how you read the whole story off a handful of numbers. Mapped from cause to effect.

Reading paths

  1. 1

    Start Here

    4 ideas · ~16 min

    A four-stop tour of the whole map — what a bank is made of, how it earns, what goes wrong, and how you read it all off a results deck. Fifteen minutes before you pick a deeper path.

    1. The Bank Balance Sheet
    2. Net Interest Margin
    3. Gross & Net NPA Ratio
    4. Reading a Bank's Results
    Read in order
  2. 2

    The Spread Engine

    6 ideas · ~24 min

    How a bank actually makes money on lending — from the deposits it raises cheap to the loans it prices dear, and the margin sitting in between.

    1. The Bank Balance Sheet
    2. Why Branches Push CASA
    3. Cost of Funds
    4. Yield on Advances
    5. Net Interest Income
    6. Net Interest Margin
    Read in order
  3. 3

    The Volume Side

    3 ideas · ~12 min

    Margin is only half the story. This is the other half — how fast the book grows on both sides, and the one ratio that keeps the two honest.

    1. Credit Growth
    2. Deposit Growth
    3. Credit-Deposit Ratio
    Read in order
  4. 4

    The Regulator's Grip

    7 ideas · ~28 min

    What RBI forces onto every bank's balance sheet — the rate it sets, the cash it locks away, and the loans it insists get made before the bank touches its own money.

    1. RBI & the Repo Rate
    2. Rate Transmission
    3. Cash Reserve Ratio
    4. Statutory Liquidity Ratio
    5. The Treasury Book
    6. Liquidity Coverage Ratio
    7. Priority Sector Lending
    Read in order
  5. 5

    The NPA Lifecycle

    7 ideas · ~28 min

    A loan going bad, start to finish — from the first missed signal to the day it's written off the books.

    1. IRAC Norms
    2. SMA Stress Buckets
    3. What an NPA Is (the 90-Day Rule)
    4. Asset Classification (Standard → Loss)
    5. Provisioning
    6. Credit Cost
    7. Recovery & Write-offs
    Read in order
  6. 6

    From Spread to Bottom Line

    8 ideas · ~32 min

    The full P&L, read top to bottom — how the spread and fee income build to operating profit, and what provisions leave behind as the number the results headline leads with.

    1. Net Interest Income
    2. Non-Interest Income
    3. Cost-to-Income Ratio
    4. Pre-Provision Operating Profit
    5. Provisioning
    6. Credit Cost
    7. Net Profit
    8. ROA / ROE
    Read in order
  7. 7

    How the Bank Is Judged

    9 ideas · ~36 min

    Read any bank's results in five minutes. The seven-or-so numbers that tell you whether it funds itself cheaply, lends cleanly, runs lean, and stands safe — and which lever each one measures.

    1. Reading a Bank's Results
    2. Net Interest Margin
    3. CASA Ratio
    4. Gross & Net NPA Ratio
    5. Provision Coverage Ratio
    6. Cost-to-Income Ratio
    7. Net Profit
    8. ROA / ROE
    9. Capital Adequacy (CRAR)
    Read in order