Finance Dictionary

Financial Glossary

Over 100 financial terms explained in plain English — organized by category and cross-referenced with our calculators and articles. No jargon, no condescension.

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Tax Terms (12) Debt & Credit Terms (15) Insurance Terms (17) Real Estate Terms (17) Retirement & Investing Terms (24) Budgeting & Savings Terms (13) Banking & Credit Terms (8)

Tax Terms

AGI (Adjusted Gross Income): Your gross income minus above-the-line deductions like 401(k) contributions, HSA contributions, and student loan interest. Most tax calculations start from AGI.
AMT (Alternative Minimum Tax): A parallel tax system designed to ensure high earners pay minimum tax. Calculated separately from regular tax; you pay the higher amount. Affects <1% of taxpayers today.
Capital Gain: Profit from selling an asset. Long-term (held 12+ months): taxed at 0%, 15%, or 20%. Short-term (held <12 months): taxed as ordinary income.
Cost Basis: What you paid for an asset plus any commissions or fees. Used to calculate gain or loss when you sell.
Deduction: Reduces your taxable income. Either standard ($15K single, $30K married in 2025) or itemized (mortgage interest, SALT, charity, medical >7.5% AGI).
Effective Tax Rate: Total tax ÷ total income. Always lower than marginal rate because of progressive brackets.
FICA: Federal Insurance Contributions Act — the 7.65% payroll tax (6.2% Social Security + 1.45% Medicare) withheld from wages, matched by employers.
Marginal Tax Rate: The rate applied to your next dollar of income — the bracket your top dollar falls into.
Standard Deduction: A flat dollar amount you can subtract from income without itemizing. 2025: $15,000 single, $30,000 married filing jointly, $22,500 head of household.
Tax Credit: Reduces tax owed dollar-for-dollar. More valuable than deductions. Examples: Child Tax Credit ($2K/child), EITC, Saver's Credit.
Taxable Income: AGI minus either the standard deduction or itemized deductions. The number bracket rates are applied to.
Withholding: Money your employer sends to the IRS on your behalf throughout the year, based on your W-4 form. Adjust W-4 if you consistently owe or get large refunds.

Debt & Credit Terms

APR (Annual Percentage Rate): Interest rate plus most fees, expressed as an annual rate. Always ≥ interest rate. Required disclosure under Truth in Lending Act.
APY (Annual Percentage Yield): Effective annual yield on savings/investments including compounding. Always > nominal rate for the same APY.
Amortization: Process of paying off a loan in equal installments. Early payments are mostly interest; late payments mostly principal.
Balance Transfer: Moving debt from one credit card to another, usually to take advantage of 0% intro APR. Most charge 3-5% transfer fee.
Credit Utilization: Outstanding balance ÷ credit limit. 30% of your FICO score. Keep under 30%, ideally under 10%.
DTI (Debt-to-Income Ratio): Monthly debt payments ÷ gross monthly income. Lenders prefer ≤36% back-end DTI for mortgages.
FICO Score: Credit score ranging 300-850. Components: 35% payment history, 30% amounts owed, 15% length of history, 10% credit mix, 10% new credit.
Hard Inquiry: Credit check that briefly lowers your score 2-5 points. Stays on report 2 years. Required for new credit applications.
Minimum Payment: Smallest amount you can pay without penalty. Usually 1-3% of balance plus interest. Paying only this keeps you in debt for decades.
Origination Fee: One-time fee charged at loan closing, typically 1-8% of loan amount, deducted from loan proceeds.
PMI (Private Mortgage Insurance): Required on conventional loans with less than 20% down. Costs 0.3-1.5% of loan annually. Removes automatically at 78% LTV.
Prepayment Penalty: Fee for paying off a loan early. Banned on most consumer mortgages; still common on some auto and personal loans.
Revolving Credit: Credit line you can borrow against repeatedly (credit cards, HELOCs). No fixed payoff date; minimum payment required.
Soft Inquiry: Credit check that doesn't affect your score. Used for pre-qualification and your own credit report checks.
Underwriting: Lender's process of assessing borrower risk before approving a loan. Includes credit check, income verification, debt analysis.

Insurance Terms

Actual Cash Value (ACV): Replacement cost minus depreciation. Lower payout than replacement cost coverage.
Beneficiary: Person(s) who receive life insurance death benefit or retirement account proceeds. Choose primary and contingent.
Coinsurance: Percentage of costs you pay after meeting deductible. Common splits: 80/20 or 70/30 (insurer/you).
Copay: Flat fee for a service ($25 doctor visit, $10 prescription). Paid at time of service.
Deductible: Amount you pay out-of-pocket before insurance covers most costs. Higher deductible = lower premium.
Elimination Period: Disability insurance waiting period between disability and benefit start — like a deductible. Common: 30, 60, 90, 180 days.
HMO (Health Maintenance Organization): Health plan requiring PCP referrals, no out-of-network coverage (except emergencies). Lowest cost.
Out-of-Pocket Maximum: Most you can pay in a year for covered in-network care. ACA caps at $9,200 individual in 2025.
Own-Occupation: Disability insurance definition: pays if you can't perform YOUR specific occupation. More expensive but easier to claim.
PPO (Preferred Provider Organization): Health plan with no referrals, out-of-network covered at higher cost. Highest cost, most flexibility.
Premium: Monthly amount you pay for insurance coverage, regardless of whether you use services.
Replacement Cost: Coverage that pays what it costs to buy a new equivalent item — no depreciation. Always choose over ACV.
Rider: Optional add-on to an insurance policy — e.g., waiver of premium, accidental death, return of premium.
Term Life Insurance: Coverage for a fixed period (10, 20, 30 years). Pays out only if you die during term. No cash value. Cheapest form.
Umbrella Policy: Additional liability coverage ($1M-$10M) sitting on top of auto and home insurance. Cheap ($150-$300/year per $1M).
Underwriting: Insurer's process of assessing risk before issuing a policy. Includes medical exam (life), driving record (auto), inspection (home).
Whole Life Insurance: Permanent coverage with cash value buildup. Premiums 5-10× higher than term. Almost always a poor investment.

Real Estate Terms

Amortization Schedule: Table showing how each loan payment splits between principal and interest over the loan term.
Appraisal: Independent estimate of property value, required by lenders. Typically costs $400-$700 for residential.
Assessed Value: Value a tax assessor assigns for property tax purposes. May differ significantly from market value.
Cap Rate: NOI ÷ property value. Rate of return if you paid all cash. Pure property measure, ignores financing.
Closing Costs: Fees paid at settlement — typically 2-5% for buyers, 6-10% for sellers (including commissions).
Contingency: Condition that must be met for a real estate contract to proceed. Common: inspection, financing, appraisal.
Down Payment: Cash paid upfront, separate from the loan. Conventional: 3-20%. FHA: 3.5%. VA/USDA: 0%.
Earnest Money: Good-faith deposit (1-3% of price) showing buyer is serious. Credited toward purchase at closing; forfeited if buyer backs out without cause.
Escrow: Account held by lender to pay property taxes and insurance on your behalf. Funded monthly as part of mortgage payment.
HELOC (Home Equity Line of Credit): Revolving credit line secured by home equity. Typically variable rate. Interest may be tax-deductible if used for home improvements.
LTV (Loan-to-Value): Loan amount ÷ property value. Lower LTV = better terms. PMI required above 80% LTV on conventional loans.
NOI (Net Operating Income): Gross rental income minus vacancy minus operating expenses. Does NOT include debt service or CapEx.
PITI: Principal, Interest, Taxes, Insurance — the four components of a monthly mortgage payment.
Points: Upfront fee (1 point = 1% of loan) paid to reduce interest rate (typically 0.25%). Worth it if you'll keep the loan past break-even.
Principal: The original amount borrowed, before interest. Each payment reduces principal.
Title Insurance: Insurance against title defects (undisclosed liens, heirs, fraud). Lender's policy required; owner's policy recommended.
Transfer Tax: State/local tax on real estate transfers. Ranges from 0.01% to 2%+ depending on jurisdiction.

Retirement & Investing Terms

Asset Allocation: Mix of stocks, bonds, and other asset classes. Drives both returns and volatility. Common rule: 110 minus age = stock percentage.
Bonds: Loans you make to governments or corporations. Lower expected return (~5%) but lower volatility than stocks.
CAGR (Compound Annual Growth Rate): Annualized return — the steady yearly rate that produces the same final value. Best metric for comparing investments with different holding periods.
Diversification: Spreading investments across asset classes, sectors, geographies to reduce risk. "Don't put all eggs in one basket."
Dividend: Distribution of company profits to shareholders. Typically paid quarterly. Reinvested dividends are a major component of long-term returns.
Dollar-Cost Averaging (DCA): Investing fixed amounts at regular intervals. Reduces timing risk; removes emotion from investing.
Expense Ratio: Annual fee charged by mutual funds and ETFs, expressed as % of assets. Index funds: 0.03-0.20%. Actively managed: 0.5-2.0%. Lower is better.
FIRE: Financial Independence, Retire Early. Movement emphasizing high savings rates (50%+) to retire in 10-17 years instead of 40.
Index Fund: Mutual fund or ETF that tracks a market index (S&P 500, total stock market). Low cost, broad diversification. Recommended by Warren Buffett.
IRA (Individual Retirement Account): Tax-advantaged retirement account. Traditional: pre-tax contributions, taxed on withdrawal. Roth: after-tax contributions, tax-free withdrawal.
Lump Sum Investing: Investing a windfall all at once. Mathematically beats DCA ~67% of the time (markets rise over time).
Mutual Fund: Pooled investment vehicle that holds many securities. Priced once daily at market close. Higher expense ratios than ETFs typically.
Portfolio: Your complete collection of investments across all accounts. Track overall allocation, not just individual holdings.
REIT (Real Estate Investment Trust): Publicly traded company that owns real estate. Required to distribute 90% of income as dividends. Liquid way to invest in real estate.
Required Minimum Distribution (RMD): Mandatory withdrawals from Traditional IRAs and 401(k)s starting at age 73 (75 starting 2033). Roth IRAs have no RMDs.
Risk Tolerance: Your ability and willingness to endure investment volatility. Drives asset allocation. Younger investors can typically tolerate more risk.
Roth Conversion: Moving funds from Traditional IRA to Roth IRA. Taxes due on converted amount. Useful in low-income years.
S&P 500: Index of the 500 largest US public companies. Represents ~80% of total US market cap. Historical return: ~10% nominal, ~7% real.
Sequence of Returns Risk: Risk that market crashes early in retirement permanently impair your portfolio. Mitigate by holding cash/bonds.
Stocks: Ownership shares in a company. Higher expected returns (~10%) but higher volatility than bonds.
Target Date Fund: Mutual fund that automatically adjusts allocation (more conservative) as target retirement date approaches. Simple "set it and forget it" option.
Tax-Loss Harvesting: Selling investments at a loss to offset capital gains. Can deduct up to $3,000 against ordinary income annually.
Total Return: Price appreciation + dividends. The complete return on an investment.
Volatility: How much an investment's price fluctuates. Measured by standard deviation. Stocks: ~15-20% annual volatility. Bonds: ~5-8%.

Budgeting & Savings Terms

50/30/20 Rule: Budget framework: 50% needs, 30% wants, 20% savings/debt repayment. Popularized by Elizabeth Warren.
Cash Flow: Money coming in minus money going out. Positive cash flow = surplus; negative = deficit.
Emergency Fund: 3-6 months of essential expenses in liquid savings. Covers unexpected events without going into debt.
FDIC Insurance: Federal insurance on bank deposits up to $250,000 per depositor, per bank, per ownership category.
Gross Income: Total income before taxes or deductions. Used for DTI calculations.
High-Yield Savings Account (HYSA): Savings account paying 4-5% APY (currently). Online banks offer best rates. FDIC-insured.
Net Income: Income after taxes and deductions (take-home pay). What actually hits your bank account.
Net Worth: Assets minus liabilities. The true scoreboard of financial health — more meaningful than income.
Pay Yourself First: Principle of automating savings before discretionary spending. "Money you never see is money you never miss."
Savings Rate: Savings ÷ income. 20% baseline; 50%+ for FIRE seekers. The most powerful lever for financial independence.
Sinking Fund: Savings earmarked for a specific future expense — vacations, holidays, car replacement. Separate from emergency fund.
Take-Home Pay: Net income — gross minus taxes, benefits, and other deductions. What you actually live on.
Zero-Based Budgeting: Method where every dollar is assigned a specific purpose before the month starts. More control, more effort.

Banking & Credit Terms

APY vs APR: APY (Annual Percentage Yield) includes compounding — used for savings. APR (Annual Percentage Rate) is simple annual rate — used for loans.
Certified Check: Check guaranteed by the issuing bank. Used for large purchases where recipient needs assurance of funds.
ChexSystems: Reporting agency for banking history (like credit bureaus for credit). Negative marks can prevent opening new bank accounts.
Compound Interest: Interest earned on previously-earned interest. The mechanism behind long-term wealth building.
Direct Deposit: Electronic transfer of paycheck directly to your bank account. Faster, safer than paper checks.
Overdraft: When you spend more than your account balance. Banks may charge $35 per transaction unless you opt out of overdraft protection.
Routing Number: 9-digit number identifying your bank. Used for direct deposits, wire transfers, and ACH transactions.
Wire Transfer: Electronic transfer of funds between banks. Same-day for domestic; 1-5 days for international. Costs $25-$50 typically.

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