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Fixed-term deposits glossary: key terms explained in plain English

By FastBuySale Newsroom · 9 Nov 2026 · 38m ago

What is a fixed-term deposit?

A fixed-term deposit is an agreement between you and a bank: you leave a set amount of money untouched for a set period, and the bank pays a rate that is agreed in advance. In the United States the product is usually called a certificate of deposit, or CD. In the UK people say fixed-rate bond or fixed-term savings account, in Australia and New Zealand term deposit, and in India fixed deposit. The names change from country to country, but the vocabulary on the paperwork is surprisingly similar.

This glossary explains those words in plain English. It uses US examples because US disclosure rules are strict and well documented, and it points out where the idea works differently elsewhere. Rates and rules change, so treat the numbers in the examples as illustrations, not offers.

Core terms on the rate sheet

Principal. The amount you deposit at the start. If you open a deposit with 5,000 dollars, that 5,000 is your principal.

Term. The length of time the money is committed, such as three months, one year or five years. Longer terms have often paid more than shorter ones, but that is not guaranteed; when markets expect rates to fall, a one-year deposit can pay more than a five-year one.

Interest rate or nominal rate. The base yearly rate before compounding is taken into account.

APY, or annual percentage yield. The total return over a year once compounding is included. In the US, the Truth in Savings Act and Regulation DD require banks to show APY so customers can compare accounts like for like. Elsewhere you may see AER (annual equivalent rate) in the UK, or simply an annual rate, and the comparison logic is the same.

Compounding frequency. How often earned interest is added to the balance so that it starts earning interest too. Daily, monthly and quarterly are common.

Minimum opening deposit. The smallest amount the bank accepts for that product. Some deposits have no minimum; others need 1,000 dollars or more.

Jumbo deposit. An informal name for a high-minimum deposit, often 100,000 dollars or more, that may carry a slightly different rate.

Worked example: rate versus APY

Imagine two one-year deposits of 10,000 dollars. Bank A pays a 4.00 percent rate compounded once a year. Bank B pays 3.95 percent compounded daily.

Bank A pays 10,000 x 0.04 = 400 dollars at the end of the year, so its APY is 4.00 percent.

Bank B adds a tiny amount every day. Over 365 days, daily compounding at 3.95 percent produces about 402.9 dollars, an APY of roughly 4.03 percent. Bank B looks lower on the headline rate but pays slightly more. That is exactly why comparing APY matters. You can check figures like these with the compound interest calculator linked on this page.

Terms that describe the end of the deposit

Maturity date. The day the term ends and you can take out the principal plus interest without a penalty.

Grace period. A short window after maturity, often seven to ten days at US banks, when you can withdraw, add money or change the term without a penalty. The length is set by the bank and must be disclosed.

Automatic renewal or rollover. If you do nothing during the grace period, many accounts renew for a similar term at whatever rate the bank offers on that day. That rate could be lower than the original rate. US banks that roll over longer deposits must send advance notice, but it is still your job to read it.

Payout options. Interest may be paid into the deposit, sent to a separate savings or checking account each month, or paid only at maturity. Taking interest out each month reduces compounding.

Terms about getting your money early

Early withdrawal penalty. The charge for taking money out before maturity. It is usually expressed as a number of days or months of interest, for example 90 days of simple interest on a one-year deposit or twelve months of interest on a five-year deposit. Under US Regulation D, a deposit withdrawn within six days of being made must carry a penalty of at least seven days of simple interest, and banks set the rest of their penalty policy themselves.

Penalty from principal. If you withdraw very early, before enough interest has built up, the penalty can come out of your original deposit. That is how people end up with less than they put in, even at an insured bank.

Partial withdrawal. Some banks allow you to take out part of the balance and pay a penalty only on that part; others require you to close the whole deposit.

No-penalty deposit. A product that lets you withdraw after a short waiting period without a charge. The trade-off is usually a lower rate.

Notice account. Common in the UK and Europe: you must give, say, 30 or 90 days of notice before withdrawing. It sits between an easy-access account and a full fixed term.

Worked example: what a penalty costs

Suppose you place 8,000 dollars in a two-year deposit at 4.20 percent, with a penalty of 180 days of simple interest. After ten months a car repair forces you to close it.

Daily interest is about 8,000 x 0.042 / 365 = 0.92 dollars. 180 days of interest is about 166 dollars. In ten months you earned roughly 280 dollars, so you leave with about 8,114 dollars rather than the 8,280 you would have had at that point without the penalty. Had you closed in month three, interest earned would have been around 84 dollars, so the penalty would have taken those 84 dollars and about 82 dollars of principal.

The lesson is simple: keep an emergency buffer in an easy-access account so a deposit you cannot afford to break never has to be broken.

Terms about safety and protection

Deposit insurance. A government-backed scheme that repays depositors if a bank fails. In the US the FDIC covers deposits at insured banks up to 250,000 dollars per depositor, per insured bank, for each account ownership category, and the NCUA provides similar cover at federally insured credit unions. In the UK the FSCS has protected eligible deposits up to 120,000 pounds per person, per authorised institution since 1 December 2025. Other countries run their own schemes with their own limits.

Ownership category. Under FDIC rules, single accounts, joint accounts, certain retirement accounts and trust accounts are insured separately, so one person can have more than 250,000 dollars insured at a single bank if the money sits in different categories.

Brokered deposit. A deposit bought through a brokerage firm rather than directly from the bank. It can still be FDIC-insured, but it may be sold on a secondary market before maturity, and its market price can fall if rates rise.

Callable deposit. A deposit the issuing bank can end early, usually when rates have dropped. You get your principal and earned interest back, but you lose the higher rate you were counting on.

Terms for building a strategy

Ladder. Splitting money across several deposits with staggered maturities, for example one, two, three, four and five years. Each year one deposit matures, giving you access to part of your money while the rest keeps earning.

Barbell. Putting some money in short terms and some in long terms, with nothing in the middle, to balance flexibility and rate.

Bump-up or step-up deposit. A deposit that lets you raise your rate once if the bank's rate for that term increases, or that rises on a set schedule. The starting rate is usually lower.

Add-on deposit. A deposit that allows extra contributions after opening.

Real return. The interest rate minus inflation. A 4 percent deposit during 3 percent inflation grows your purchasing power by roughly 1 percent a year before tax. The inflation calculator linked on this page helps you see that effect over several years.

Worked example: a simple five-rung ladder

Take 25,000 dollars and split it into five deposits of 5,000 dollars, maturing in one to five years. When the one-year deposit matures, you can spend it or reinvest it into a new five-year deposit. After four years every rung is a five-year deposit, yet one of them matures every twelve months. You get much of the rate advantage of longer terms while keeping regular access to cash.

Tax terms you will meet

Interest income. In most countries, interest from a fixed-term deposit is taxable income in the year it is credited or made available, even if you leave it in the account. In the US the bank reports it on Form 1099-INT.

Tax-advantaged wrappers. Some countries let you hold deposits inside a tax-favoured account, such as an IRA in the US or a cash ISA in the UK. The rules for each wrapper are set by the national tax authority, so check them before you open one.

Withholding. In some countries the bank deducts tax at source from interest. Whether you can reclaim it depends on your income and local rules.

How to use this glossary when comparing offers

Put each offer side by side with the same five facts: APY, term, minimum deposit, early withdrawal penalty and what happens at maturity. Then add one safety check: is the institution covered by your country's deposit insurance scheme, and will your total balance there stay within the limit?

If two offers are close on APY, the one with the gentler penalty and the clearer renewal rules is often the better fit for real life. Rates and rules change, so confirm every figure on the bank's current disclosure and the regulator's own pages before you commit. This article is general education, not personal financial advice.

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