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Financial Glossary

A free, plain-English glossary of 50 personal-finance terms - retirement accounts, tax codes, investment math, and mortgage jargon from the US, UK, India, and the universal world of money. Every term ships with a tight definition, a formula (when applicable), and a worked example.

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401(k)

US employer-sponsored retirement account with pre-tax or Roth contributions and an annual contribution limit set by the IRS.

87A Rebate

Indian tax rebate that zeroes out tax liability for filers with taxable income up to INR 7 lakh (New Regime) or INR 5 lakh (Old Regime).

A

Adjusted Gross Income (AGI)

Your total US income minus specific 'above-the-line' deductions like HSA, IRA, and student loan interest.

APR vs APY

APR is the nominal annual rate without compounding; APY is the effective annual rate that includes compounding within the year.

C

Capital Gains Allowance

Annual tax-free amount of UK capital gains - cut to GBP 3,000 per individual from April 2024.

Capital Gains Tax

Tax on the profit from selling an investment or asset, taxed at different rates for short-term vs long-term holdings.

Compound Interest

Interest earned on both the original principal and previously accumulated interest, producing exponential growth over time.

D

Debt-to-Income (DTI)

Ratio of monthly debt payments to gross monthly income - the primary mortgage underwriting test, typically capped at 43%.

Dividend Allowance

Annual tax-free portion of UK dividend income - reduced to GBP 500 per individual from April 2024.

Dollar-Cost Averaging

Investment strategy of contributing a fixed amount at regular intervals regardless of price, smoothing out market timing risk.

E

EEE (Exempt-Exempt-Exempt)

Indian tax classification where contributions, growth, and withdrawals from a savings instrument are all completely tax-free.

Effective Tax Rate

Total tax paid divided by total taxable income - the 'average' tax rate that captures the impact of progressive brackets and deductions.

Emergency Fund

Liquid cash reserve covering 3 to 6 months of essential expenses, designed to cover unexpected shocks without resorting to debt.

EPF (Employees' Provident Fund)

Indian mandatory retirement scheme where employee and employer each contribute 12% of basic salary to a tax-advantaged fund.

ESPP (Employee Stock Purchase Plan)

An employer-sponsored program that lets US employees buy company stock at a discount through payroll deduction.

F

FICO Score

Three-digit US credit score (300-850) built by FICO from credit-bureau data, used by 90% of lenders.

Form 16

Annual TDS certificate issued by an Indian employer to a salaried employee, summarising salary paid and tax deducted at source.

FSA (Flexible Spending Account)

Pre-tax employer-sponsored account for medical or dependent-care expenses, with a strict use-it-or-lose-it rule.

Future Value

The value of a current sum at a specified date in the future after applying a given interest or growth rate.

H

HRA (House Rent Allowance)

Indian salary component for renters, exempt from income tax up to a formula-based limit under Section 10(13A).

HSA (Health Savings Account)

Triple tax-advantaged US account for medical expenses, available to those enrolled in a high-deductible health plan.

I

Inflation-Adjusted Return

The real return on an investment after subtracting inflation, showing the actual increase in purchasing power.

Internal Rate of Return (IRR)

The discount rate that makes the NPV of all project cash flows exactly zero - effectively, the project's intrinsic compound return.

ISA (Individual Savings Account)

UK tax-free savings or investment wrapper with an annual subscription limit of GBP 20,000.

L

Loan-to-Value (LTV)

Ratio of a loan balance to the underlying asset's value - used by lenders to gauge risk and to trigger PMI on mortgages.

LTCG (Long-Term Capital Gains - India)

Tax on Indian long-term capital gains - 12.5% on listed shares above INR 1.25 lakh per year and 12.5% on most other assets (no indexation from July 2024).

M

Marginal Tax Rate

The tax rate applied to your next dollar of income - critical for any 'should I take this raise / deduction / Roth?' decision.

Modified Adjusted Gross Income (MAGI)

Your AGI with certain deductions added back, used to test eligibility for IRA contributions, ACA subsidies, and IRMAA.

Mortgage Amortization

The schedule of principal and interest payments over the life of a mortgage - early payments are mostly interest, later payments mostly principal.

Mortgage Points

Prepaid mortgage interest paid at closing to reduce your loan's interest rate - each point costs 1% of the loan amount.

N

National Insurance

UK social-security tax funding the State Pension, NHS, and benefits, paid by both employees and employers on earnings above thresholds.

Net Present Value (NPV)

The current value of a future stream of cash flows discounted at a chosen discount rate - positive NPV means the project beats the discount rate.

NPS (National Pension System)

Voluntary Indian retirement scheme with market-linked returns and an additional INR 50,000 tax deduction under Section 80CCD(1B).

P

PAYE (Pay As You Earn)

HMRC's UK system for collecting income tax and National Insurance directly from employee pay each pay period.

Personal Allowance

Annual tax-free portion of UK income - GBP 12,570 for most taxpayers, tapered to zero above GBP 125,140.

PMI (Private Mortgage Insurance)

Insurance lenders require on conventional mortgages with less than 20% down payment, protecting the lender if you default.

PPF (Public Provident Fund)

Government-backed Indian long-term savings scheme with EEE tax status and a 15-year lock-in.

R

Required Minimum Distribution (RMD)

Annual IRS-mandated withdrawal from most US retirement accounts starting at age 73.

Risk-Free Rate

The theoretical return on an investment with zero default risk - usually proxied by short-term US Treasury bill yields.

Roth IRA

An individual retirement account funded with after-tax money, with completely tax-free qualified withdrawals in retirement.

S

Section 24(b)

Indian income-tax deduction for home loan interest - up to INR 2 lakh per year for a self-occupied property.

Section 80C

Indian tax deduction of up to INR 1.5 lakh per year for specified savings and investments under the Old Tax Regime.

SIPP (Self-Invested Personal Pension)

UK personal pension with broad investment choice, tax relief on contributions, and a 25% tax-free lump sum at retirement.

Stamp Duty Land Tax (SDLT)

UK property purchase tax paid by the buyer, charged on a slab basis above a tax-free threshold (currently GBP 125,000 in England).

Standard Deduction (India)

Flat deduction of INR 75,000 (New Regime) or INR 50,000 (Old Regime) from salary income, available to all salaried taxpayers and pensioners.

Step-Up in Basis

US tax rule that resets an inherited asset's cost basis to its fair market value at the date of death, often wiping out decades of taxable gain.

T

TDS (Tax Deducted at Source)

Indian system where the payer deducts a specified tax percentage at the time of payment and remits it to the government on the payee's behalf.

Time Value of Money

Core finance principle that a dollar today is worth more than a dollar tomorrow because today's dollar can be invested.

Traditional IRA

Pre-tax US retirement account where contributions are tax-deductible and withdrawals are taxed as ordinary income.

W

Wash Sale

An IRS rule that disallows a capital loss if you buy a 'substantially identical' security within 30 days before or after the sale.