Plain-language definitions of the terms used across this volume. Use the letter links to move between the glossary pages.
Q
QE
Quantitative easing: the central bank buys bonds and pays by creating reserves, so reserves and deposits rise together; used when short-term rates are already near zero (Section 0.9).
QT
Quantitative tightening: the reverse of QE, in which the central bank lets bonds mature without replacing them, so reserves and deposits shrink; the Fed’s latest round ran from June 1, 2022, to December 1, 2025 (Section 0.9).
R
RCSA
Risk and Control Self-Assessment: each unit periodically lists its risks and rates its own controls, feeding the firm’s risk register. (Section 11.4).
Real effective exchange rate
The nominal effective exchange rate adjusted for inflation at home relative to trading partners; the usual gauge of trade competitiveness. (Section 1.20).
Real interest rate
An interest rate after allowing for inflation: the extra purchasing power a lender earns, roughly the nominal rate minus expected inflation (Section 1.5).
Real wage
A wage adjusted for inflation; it falls when prices rise faster than pay. (Section 1.20).
Real-time gross settlement (RTGS)
A payment system that settles each payment individually, immediately and finally in central bank money, such as Fedwire, T2 or India’s RTGS (Section 3.5).
Reconciliation break
A mismatch between two records that should agree, logged once under the earliest reconciliation step and worked by age, value and root cause. (Section 8.3).
RegTech
Technology, increasingly AI, applied to compliance tasks such as KYC, AML monitoring, surveillance and regulatory reporting. (Section 7.5).
REIT
Real estate investment trust: a company that owns or finances income-producing property and pays out most of its income, letting investors hold real estate through shares (Section 6.2).
Remittance
Money a migrant worker sends home to family; in the balance of payments it is secondary income. (Section 10.5).
Repo rate
The rate at which the RBI lends to banks overnight against government securities; the policy rate set by the MPC and the middle of the LAF corridor. (Section 10.2).
Repurchase agreement
A loan secured by bonds: the borrower sells them today and agrees to buy them back tomorrow at a slightly higher price. (Section 3.16).
Reserve currency
A currency that central banks and companies hold in large amounts for trade invoicing, payments and reserves; the US dollar is the leading example (Section 12.1).
Reserve management purchases
Purchases of Treasury bills that the New York Fed began on December 12, 2025, to keep bank reserves at an ample level as demand for them grows (Section 3.2).
Reserve ratio
The share of deposits a bank is required to hold as reserves; the Fed’s has been zero since March 2020, so it no longer limits US lending (Appendix A.0).
Reserve-backed stablecoin
A token that promises redemption at $1 and holds cash, deposits and short-term Treasury bills against it. (Section 3.12).
Resolution pack
A set of records a UK firm keeps so an administrator can retrieve client asset information within 48 hours of a failure. (Section 11.3).
Risk retention
The rule that a securitization sponsor keep a share, generally at least 5 percent, of the credit risk. (Section 11.5).
Risk-weighted assets
A bank’s assets multiplied by risk weights (for example 0% for cash and Treasuries, 50% for mortgages, 100% for corporate loans) and summed. (Section 3.13).
ROE
Return on equity: net profit divided by shareholders’ equity, showing how well a company turns owners’ capital into profit (Section 5.3).
Roll yield
The gain or loss from replacing an expiring futures contract with a later one; negative in contango, positive in backwardation. (Section 1.21).
Runway
The number of months of cash a company has left at its current burn rate. Illustration: $2 million in the bank with a $200,000 monthly burn is $2,000,000 ÷ $200,000 = 10 months (Section 4.7).
S
S-1
The registration statement a company files with the US SEC before an IPO, disclosing its financials, risks and use of proceeds; the counterpart of India’s DRHP (Section 4.5).
Scope 3
Emissions in a company’s value chain, outside its direct emissions (Scope 1) and its purchased energy (Scope 2). (Section 8.7).
SEBI
The Securities and Exchange Board of India, the capital markets regulator: established in 1988, given statutory powers in 1992, it oversees IPOs, exchanges, brokers and mutual funds (Section 4.6).
SEC
The US Securities and Exchange Commission, created in 1934 after the 1929 crash to protect investors and keep markets fair; public companies file their disclosures with it (Section 4.5).
Secondary sanctions
Sanctions that penalize third-country banks and firms for dealing with a sanctioned party, usually by threatening their access to the US market. (Section 1.18).
Sector rotation
Shifting investment between sectors as the economy moves through recovery, expansion, late cycle and recession (Section 6.1).
Securitization
Converting streams of loan payments into tradable bonds by pooling many loans and selling the cash flows to investors. (Section 11.5).
Segregation of duties
The rule that no one should be able both to do something and to sign it off, such as trading and also recording one’s own trades. (Section 8.5).
Sensex
The 30-stock benchmark index of the Bombay Stock Exchange (BSE) (Section 4.2).
Settlement fail
A trade that does not settle on its due date because the seller does not deliver the securities or the buyer does not deliver the cash (Appendix A.0).
Shadow banking
Credit and finance outside the regulated banking system, done by hedge funds, money market funds, finance companies and similar entities. The FSB’s narrow measure of its riskiest, bank-like activities was $76.3 trillion, against $256.8 trillion for the broad non-bank sector (Section 3.10).
Shell companies
Companies with no real operations, existing only to hold assets or obscure their ownership (Section 9.5).
Short squeeze
A jump in price that forces short sellers to buy back shares to limit losses, which pushes the price higher still; GameStop in January 2021 is the classic case (Section 4.8).
Shrinkage
The share of paid hours that is not productive: (paid − productive) ÷ paid, so 6 productive hours out of 8 paid is 25%. (Section 10.6).
Single-price auction
The US Treasury’s auction method: bids are accepted from the lowest yield upward until the offering is sold, and every winning bidder receives the highest accepted yield (Section 2.4).
SIPC
The US Securities Investor Protection Corporation, which restores missing customer assets of failed brokers up to $500,000 per customer, but does not cover market losses. (Section 11.3).
Small cap
In India, a listed company ranked 251st or lower by full market capitalization; in the US, roughly $300 million to $2 billion by convention (Section 5.2).
SOFR
The Secured Overnight Financing Rate: the benchmark rate on overnight loans secured by Treasury securities, published by the New York Fed (Section 2.10).
Soft landing
Bringing inflation down without causing a recession, as the US did between 2022 and 2024 (Section 1.8).
Sovereign default
A government’s failure to pay its debt as promised; it is almost always a problem of foreign-currency debt, since a government can print its own money (Section 9.4).
Sovereign wealth fund
A state-owned investment fund financed by commodity revenue or surplus reserves, such as Norway’s Government Pension Fund Global (Section 9.7).
Standing deposit facility
The RBI window where banks park surplus cash without collateral, at 0.25 point below the repo rate; the floor of the corridor since April 2022. (Section 10.2).
Standing repo facility
A Fed facility created in July 2021 that lends cash overnight against Treasury and agency securities at a rate at the top of the target range, capping what eligible firms pay for overnight funding (Section 2.10).
Stargate Project
A plan announced in January 2025 by SoftBank, OpenAI, Oracle and MGX to invest $500 billion in US AI infrastructure over four years; a stated plan, not money already spent (Section 7.3).
Statutory liquidity ratio
The share of a bank’s liabilities that it must hold in government securities, cash or gold; it also gives the government a steady buyer for its debt. (Section 10.2).
Stock record
The firm’s record of the securities it holds, by owner and location, reconciled security by security against custodians and depositories. (Section 8.3).
Stockholms Banco
Sweden’s first bank, which in 1661 issued Europe’s first banknotes as loans, over-issued them and failed; the Riksbank was founded from its ruins in 1668 (Section 0.4).
Store of value
The function of money as a way to hold purchasing power over time (Section 0.8).
STP rate
Straight-through processing rate: the share of items that match or settle automatically with no human intervention, for example 48,500 ÷ 50,000 = 97%. (Section 8.3).
Stranded assets
Assets, such as fossil-fuel reserves, that may lose their value before the end of their useful life because of climate policy or technology. (Section 1.17).
Subprime mortgage
A home loan to a borrower with a weak credit history who is likely to default if house prices or income fall; the raw material of the 2008 crisis (Section 3.8).
Sudden stop
An abrupt halt in foreign capital inflows to a country, which weakens its currency and makes foreign-currency debts harder to roll over (Section 9.7).
Supply shock
A sudden event, such as a war or a failed harvest, that raises costs or cuts output and pushes prices up (Section 1.8).
Sustainability-linked bond
A bond whose coupon is tied to the issuer meeting stated ESG targets, so it rises if the target is missed. (Section 8.7).
SWIFT
Society for Worldwide Interbank Financial Telecommunication: a cooperative messaging network that carries banks’ payment instructions but does not move money itself; more than 11,500 institutions are connected, and in 2022 selected Russian banks were cut off from it (Section 3.5).
Systematic investment plan
A fixed amount invested in a chosen fund every month; SIP (Section 4.9).
Systemic risk
The risk that the failure of one part of a tightly connected system triggers failures throughout it; the reason for bank regulation, stress tests and resolution rules (Section 3.8).
T
T+0
Same-day settlement; India offers an optional T+0 cycle for a list of large stocks (Section 8.2).
T+1
Settlement one business day after the trade date. The United States, Canada, Mexico and India settle T+1; the EU, UK and Switzerland move to T+1 on October 11, 2027 (Section 8.2).
T-account
A two-column record of what an entity owns (assets) and owes (liabilities), used to show how one transaction changes several balance sheets at once (Section 3.2).
T2
The Eurosystem’s real-time gross settlement system for euro payments, which replaced TARGET2 in March 2023 (Section 3.5).
Tariff
A tax on imports that makes foreign goods pricier and shields local producers, but raises prices for domestic consumers and can provoke retaliation (Section 1.4).
Tax haven
A jurisdiction offering very low or zero taxes and secrecy, such as the Cayman Islands, the British Virgin Islands and Panama (Section 9.6).
Textbook multiplier
The old textbook claim that a reserve requirement turns each deposit into a fixed multiple of new deposits (for example $1,000 ÷ 0.10 = $10,000). Central banks say it does not describe how money is created; kept as history (Section 3.2).
Three Lines of Defense
The standard control model: the business owns its risk, risk management and compliance oversee it, and internal audit independently tests both. (Section 8.5).
TIPS
Treasury Inflation-Protected Securities: US government bonds whose principal is adjusted for inflation, so their yields are quoted in real terms (Section 1.5).
Title Transfer Facility (TTF)
The Dutch gas trading hub whose price is Europe’s benchmark for natural gas. (Section 1.21).
TLM
Transaction lifecycle management: the platforms, such as SmartStream TLM, that automate matching and the exception workflow for reconciliation breaks (Section 8.3).
Tolerance
The threshold below which small reconciliation differences are ignored rather than investigated. (Section 11.2).
Total factor productivity
Output growth not explained by more capital or labor, the usual measure of how much smarter an economy works. (Section 7.8).
Tracking error
How far and how erratically an index fund’s return strays from its index (Section 4.9).
Trade deficit
The excess of imports over exports; a trade surplus is the reverse. The balance of trade is only one part of the balance of payments (Section 1.4).
Transfer pricing
The prices a multinational’s subsidiaries charge each other across borders, which can shift taxable profit toward low-tax countries (Section 5.7).
Transformer architecture
The neural-network design introduced in the 2017 Google paper “Attention Is All You Need” that underlies modern large language models. (Section 7.1).
Translation exposure
The currency effect of converting a foreign subsidiary’s accounts into the parent’s currency for its annual report (Section 5.8).
TREPS
India’s tri-party repo market, cleared through the CCIL, where banks and funds lend against government securities. (Section 3.16).
TSMC
Taiwan Semiconductor Manufacturing Company, which makes roughly 90% of the world’s most advanced chips for Apple, Nvidia, AMD and Qualcomm; its location in Taiwan makes it a major geopolitical risk (Sections 6.2, 7.4).
Twin deficits
Running a government budget deficit and a current-account deficit at the same time, as the United States does (Section 2.4).
U
U-6
The broadest official US measure of labor underutilization: the unemployed plus marginally attached workers and those working part time for economic reasons. (Section 1.12).
Unicorn
A privately held startup valued at $1 billion or more; the term was coined in 2013 (Section 4.7).
Union Budget
India’s annual central government budget, presented to Parliament by the Finance Minister; the 2026–27 budget was presented on February 1, 2026 (Part 2 India Lens).
Unit of account
The function of money as a common measure of value, so different goods can be priced on one scale (Section 0.8).
UPI
Unified Payments Interface: India’s real-time, interoperable, public-rail payment system run by the National Payments Corporation of India, free at the point of use for person-to-merchant payments (Section 10.3).
Useful life
Management’s estimate of how many years an asset will be used, which sets the yearly depreciation charge; shortening it raises reported costs without changing cash. (Section 7.3).
V
Value-at-risk
A loss figure that should be exceeded only on a stated small share of days, such as one day in a hundred at 99%; it is a market risk tool. (Section 8.6).
Variable cost
A cost that rises and falls with output, such as materials, commissions and shipping (Section 6.1).
Variation margin
The cash or collateral a counterparty must add when the market value of a position or pledged collateral moves against it, collected daily by clearing houses and repo lenders (Appendix A.0).
Vendor financing
A supplier helping to fund its customers’ purchases of its own products, which ties its sales to credit conditions. (Section 7.8).
Vendor forecast
A projection made by a firm that sells the product or raises money on it; useful for direction but tilted upward. (Section 7.8).
Vostro account
The same account seen from the correspondent’s side: money it holds on behalf of a foreign bank (Latin: “your account”) (Section 3.5).
W
Weighted average call rate
The average rate on overnight loans between banks, which the RBI treats as its operating target and steers toward the repo rate. (Section 10.2).
Wholesale funding
Short-term borrowing by banks and dealers from institutional lenders, for example through repo and commercial paper, rather than from retail deposits; it can run like a bank run (Section 3.8).
Wholesale Price Index
India’s index of goods prices at the producer and wholesale stage (WPI), rebased to 2022-23 from June 2026; an early signal of cost pressure, not the RBI’s target (Section 1.8).
WTO
The World Trade Organization: sets the rules of international trade and settles disputes between members; its appellate body has been unable to hear appeals since November 30, 2020 (Section 1.11).
Y
Yield curve
A graph of interest rates on bonds of equal credit quality across maturities; an inverted curve, with short rates above long rates, has often preceded recessions (Section 2.9).
Z
Zombie companies
Insolvent firms kept alive by fresh bank loans so that lenders can avoid admitting losses, as in Japan in the 1990s (Section 9.2).