Money & Banking Rails
A first-principles breakdown of central bank reserve accounts, continuous gross settlement, deferred net clearing, and the architecture that moves money between institutions.
Pieces in this series
How Money Moves Between Banks
Central bank reserve ledgers, RTGS real-time gross settlement, and NEFT/ACH deferred net clearing
Commercial banks do not send digital cash over the internet or hold accounts with each other. Every interbank transfer is an accounting entry settled across commercial bank reserve accounts held at the Reserve Bank of India's central core…
Why Bank Transfers Used to Take Hours (and Days)
From physical MICR clearing houses and cheque truncation to batch settlement windows and straight-through processing
Before 24x7 real-time settlement, moving money between banks required physical paper transport, scheduled clearing house sessions, manual ledger reconciliation, and strict cutoff hours to prevent systemic liquidity gridlock.
How Central Banks Control Interest Rates and Inflation
From open market operations and repo corridors to interest on reserve balances (IORB), quantitative easing, and the monetary transmission mechanism
Central banks do not fix mortgage or deposit rates by legislative decree. Instead, they operate as monopoly suppliers of ultimate cash reserves, using overnight repo auctions, interest on reserve balances (IORB), and balance sheet…
How Fractional Reserve Banking and Money Creation Work
From the Goldsmith fable and the money multiplier myth to endogenous credit creation, central bank reserves, Basel III capital ratios, and bank run dynamics
Most economics textbooks claim banks take deposits and lend out a fraction, multiplying money mechanically. Modern central bank research reveals the opposite reality: commercial banks create new deposit money out of thin air whenever they…
How Core Banking Systems (CBS) Process Financial Ledgers
From double-entry General Ledger balancing to shadow liens and midnight End-of-Day batch processing
How centralized banking engines process millions of atomic transactions across double-entry ledgers, manage shadow balance holds during in-flight payments, and execute midnight End-of-Day batch rollovers.