Personal Finance Glossary F to L: Plain-English Definitions

About this page

Finance is full of terms that sound simple until you have to use them. This page is a plain-English glossary for Personal Finance, covering entries such as FAFSA — Free Application for Federal Student Aid, FAIR Plan, Fake Check (Overpayment) Scam, FDCPA — Fair Debt Collection Practices Act, FDIC Insurance, each with a short definition and a pointer to the part of the volume where it is explained.

Keep it open while you read, or use it to settle an argument about what a term really means. Every entry is written to stand on its own, with no jargon left undefined, and the part number beside it tells you where to read more. Use it as a quick reference whenever a term trips you up.

A sample of the entries (73 terms on the full page)

FAFSA — Free Application for Federal Student Aid — The free form that opens federal grants, work-study and federal loans, and most state and college aid; the 2027–28 form opened on September 23, 2026, and uses 2025 tax-year income. (Part 4.6)

FDCPA — Fair Debt Collection Practices Act — The federal law, implemented by the CFPB’s Regulation F, governing third-party debt collectors: validation information, no more than seven calls in seven days about one debt, contact before reporting a debt to a bureau, and an end to contact on written request. (Part 3.8)

Fee-Only Adviser — An adviser paid only by the client — a flat fee, an hourly rate or a percentage of assets — and never by product commissions. A “fee-based” adviser charges advisory fees plus some commissions, so both sets of conflicts apply. (Part 7.9)

Fiduciary Duty — A registered investment adviser’s legal duty of care and loyalty to the client under the Investment Advisers Act of 1940, covering the whole advisory relationship; its scope can be shaped by agreement, but the duty cannot be waived. Compare Regulation Best Interest. (Part 7.9)

Fixed Indexed Annuity — An annuity whose returns are linked to a stock index, with a floor (often 0%) and a cap or participation rate limiting the upside; crediting formulas are complex, and surrender charges are common. (Part 10.10)

Form 5500-EZ — The annual return a one-participant 401(k) must file once plan assets (counting the employer’s other one-participant plans) exceed $250,000 at the end of a plan year, and for the plan’s final year. Late filing can cost $250 a day, up to $150,000 a return, unless the IRS penalty relief program is used. (Part 6.8)

Fraud Alert — A free notice on your credit file telling lenders to verify your identity before opening credit; placed with one bureau, which must notify the other two, and lasting one year (seven with an identity theft report). Weaker than a credit freeze. (Part 13.3)

GAP Insurance — Auto coverage that pays the difference between the loan balance and the insurer’s actual-cash-value payout if the car is totaled or stolen; it earns its cost only while the loan is underwater. (Part 3.9)

Grace Period — The window in which a credit card balance can be paid in full with no interest charged on that month’s purchases. (Part 3.3)

Guaranty Association (State) — The state safety net that pays annuity and insurance benefits if an insurer fails, up to a limit — at least $250,000 of annuity present value in most states. (Part 10.10)

HDHP — High-Deductible Health Plan — A health plan meeting federal deductible and out-of-pocket limits that qualifies its holder to contribute to an HSA; for 2026, a deductible of at least $1,700 self-only / $3,400 family and an out-of-pocket maximum no higher than $8,500 / $17,000. (Parts 6.6 and 8.2)

HIPAA Authorization — A signed form allowing health providers and insurers to share a person’s medical information with someone they name; it gives no decision-making power. (Part 11.6)

HSA — Health Savings Account — The only account with tax advantages at contribution, growth, and qualified withdrawal all at once — the “triple tax advantage”; 2026 limits $4,400 self-only / $8,750 family, plus $1,000 at 55 or older; no new contributions once enrolled in Medicare. (Parts 6.6 and 10.9)

IBR — Income-Based Repayment — An older income-driven federal student loan plan that survives long-term for loans first disbursed before July 1, 2026; taking any new Direct Loan on or after that date moves all of a borrower’s Direct Loans to the Tiered Standard plan or RAP, ending IBR access. (Part 4.3)

Index Fund — A fund that simply holds every security in a market index, at a fraction of an active fund’s cost. (Part 7.3)

Intestacy — The state-law formula that decides asset distribution when someone dies without a valid will. (Part 12.1)