The finance dictionary.

New to money? You belong here. Every term has a plain-English meaning and an everyday comparison to help it stick.

75 terms, explained without assuming you know the basics.

No test. No silly questions. Start with any word that feels unfamiliar.

accumulating

Investing

A fund that reinvests income for you instead of paying it out.

Think of it like this

Like a fruit tree whose fruit is replanted automatically to grow more trees.

Altcoin

Crypto

Any cryptocurrency other than Bitcoin. Many are small, volatile and may not survive.

Think of it like this

Like calling every fizzy drink that is not the original brand an alternative—except these alternatives can differ enormously.

APR

Money

Annual percentage rate — the yearly cost of borrowing including fees.

Think of it like this

Like the full price tag for borrowing money for a year, not just the number in the shop window.

Asset allocation

Investing

How a portfolio is divided among asset types.

Think of it like this

Like dividing a dinner plate into portions: shares, bonds, cash, and other ingredients.

AUM

Funds

Assets under management: roughly how much money the fund holds.

Think of it like this

Like measuring how much money is currently inside the fund's shared pot.

Avalanche method

Investing

Repaying the highest interest rate first.

Think of it like this

Like putting out the hottest fire first: you attack the debt charging the most interest.

Bitcoin

Crypto

The first widely used cryptocurrency, with a maximum supply of 21 million coins.

Think of it like this

Like scarce digital property recorded on a public notebook that no single bank controls.

Blockchain

Crypto

A shared digital record kept in sync by many computers instead of one central owner.

Think of it like this

Like a shared notebook copied across thousands of computers, where accepted pages are very difficult to alter.

BNPL

Money

Buy now, pay later — short-term instalment credit.

Think of it like this

Like taking an item home today and splitting the bill across future paydays.

Bond

Investing

Debt issued by a government or company.

Think of it like this

Like an IOU: you lend money to a government or company and it promises repayment.

CASP

Crypto

Crypto-asset service provider — an EU-licensed business offering crypto services under MiCA.

Think of it like this

Like a licensed travel agent for crypto services that must follow the EU's rulebook.

compound interest

Money

Interest paid on both your money and the interest it has already earned.

Think of it like this

Like a snowball that grows because each new layer can collect even more snow.

compounding

Investing

Earning returns on your returns, so growth speeds up over time.

Think of it like this

Like planting a tree whose new seeds can grow into more trees of their own.

Core

Investing

The broad foundation of a portfolio.

Think of it like this

Like the sturdy base of a house that the smaller decorative choices sit on.

Correlation

Investing

How closely two investments tend to move together.

Think of it like this

Like watching two dancers to see whether they usually step in the same direction.

Credit utilisation

Money

The share of your available credit you are currently using.

Think of it like this

Like filling a glass: using a small part of your limit looks less stretched than filling it to the rim.

Crypto exchange

Crypto

A platform where people buy, sell or hold crypto assets. It may hold the keys for you.

Think of it like this

Like an online currency counter where people swap cash for crypto and back again.

Custodian

Investing

A company trusted to safeguard investments or crypto assets on someone else's behalf.

Think of it like this

Like a professional vault keeper holding assets safely on someone else's behalf.

custody

Crypto

Who actually holds the asset on your behalf.

Think of it like this

Like leaving valuables in a secure locker managed by someone else.

Deposit guarantee

Money

A national scheme protecting bank deposits up to a set limit.

Think of it like this

Like a safety net under the money you keep at an eligible bank.

distributing

Investing

A fund that pays income out to you as cash.

Think of it like this

Like a fruit tree that hands you the fruit as cash instead of replanting it.

diversification

Investing

Spreading money across many investments so one bad outcome hurts less.

Think of it like this

Like carrying your eggs in several baskets so one accident does less damage.

Domicile

Funds

The country where the fund is legally established.

Think of it like this

Like a fund's legal home address, which decides which country's rules apply to it.

Drawdown

Investing

A fall from a previous portfolio high.

Think of it like this

Like measuring how far a lift has dropped from the highest floor it previously reached.

emergency fund

Money

Cash set aside for surprises so you never have to sell investments in a hurry.

Think of it like this

Like a spare tyre for your finances: you hope not to need it, but it keeps a surprise from becoming a crisis.

Equity

Investing

Ownership in companies through shares.

Think of it like this

Like owning one tiny brick in a company rather than lending the company money.

ETC

Funds

Exchange-traded commodity — a listed product often used for a single commodity or crypto asset.

Think of it like this

Like a stock-exchange ticket designed to follow one commodity, such as gold, rather than a basket of companies.

ETF

Funds

Exchange-traded fund — a basket of investments you can buy and sell like a single share.

Think of it like this

Like buying one shopping basket containing many investments instead of choosing every item separately.

Ethereum

Crypto

A programmable blockchain used for smart contracts, tokens and decentralised applications.

Think of it like this

Like a shared global computer where people can build and run digital agreements.

ETN

Funds

Exchange-traded note — debt designed to track an asset, so the issuer also matters.

Think of it like this

Like an IOU whose repayment moves with an asset's price, so you also rely on the issuer.

ETP

Funds

Exchange-traded product — the wider family that includes ETFs, ETNs and crypto ETPs.

Think of it like this

Like a shelf holding several kinds of exchange-traded products; an ETF is one item on that shelf.

Factor

Investing

A characteristic used to select or weight investments.

Think of it like this

Like choosing football players for a specific trait, such as speed, rather than picking the whole league.

Fixed costs

Money

Bills that stay roughly the same every month, like rent or a phone plan.

Think of it like this

Like a subscription that arrives on the same date with roughly the same price.

FOMO

Behaviour

Fear of missing out, often leading to chasing recent gains.

Think of it like this

Like joining a long queue only because everyone else seems excited about what is at the front.

Gas fee

Crypto

The fee paid to process an action on a blockchain such as Ethereum.

Think of it like this

Like paying postage to have your transaction delivered and recorded on a blockchain.

Hard search

Investing

A lender check recorded on your file when you apply.

Think of it like this

Like a lender leaving a small footprint on your credit record when it checks you.

Holdings

Funds

The individual investments inside the fund.

Think of it like this

Like opening a shopping basket and listing every item inside it.

Index

Funds

A rules-based collection designed to represent a market or strategy.

Think of it like this

Like a recipe listing which ingredients belong in a market basket and in what amounts.

inflation

Investing

The rate at which prices rise, reducing what your money buys.

Think of it like this

Like your money's shopping bag slowly shrinking, because the same amount buys fewer things.

Investment policy

Behaviour

Written rules for how and why you invest.

Think of it like this

Like writing the rules of a game before emotions and excitement can change them.

ISIN

Investing

The 12-character code that identifies a specific security.

Think of it like this

Like a passport number that identifies one exact investment wherever its name appears.

Lifestyle creep

Investing

Spending rising to match every pay increase.

Think of it like this

Like moving the finish line every time your pay rises, so saving never catches up.

Limit order

Investing

An order that executes only at your chosen price or better.

Think of it like this

Like leaving a note saying ‘only buy this if the price is €20 or less’.

liquidity

Investing

How easily you can turn something into cash without moving the price.

Think of it like this

Like water versus ice: cash flows immediately, while some assets take time to thaw into spendable money.

Market maker

Investing

A participant posting buy and sell prices to support trading.

Think of it like this

Like a shopkeeper who keeps both buy and sell prices on display so trading can keep moving.

Market order

Investing

An order prioritising immediate execution.

Think of it like this

Like saying ‘buy it now at the available price’ rather than waiting for a particular price.

MiCA

Crypto

The European Union rulebook for crypto assets and the businesses that provide crypto services.

Think of it like this

Like a common EU traffic code for crypto businesses and certain crypto assets.

Minimum payment

Money

The smallest amount that keeps an account in good standing.

Think of it like this

Like taking the smallest allowed step down a long staircase: you move, but the journey can stay expensive.

Momentum

Behaviour

A strategy favouring securities with strong recent trends.

Think of it like this

Like joining a moving walkway because it has recently been travelling strongly in one direction.

NAV

Funds

Net asset value — the value of a fund's assets minus its liabilities.

Think of it like this

Like adding up everything in a shop, subtracting its bills, and finding what the shop is worth.

Net income

Money

What actually lands in your account after tax.

Think of it like this

Like the slice of cake left on your plate after tax has taken its slice.

Passive ETF

Funds

A fund designed to follow an index.

Think of it like this

Like a train following a fixed route—the index—rather than a driver choosing a new road each day.

Premium

Investing

When market price is above the fund's NAV.

Think of it like this

Like paying €10.50 for a basket whose contents are currently worth €10.

Private key

Crypto

The secret code that controls crypto in a wallet. Losing it can mean losing access forever.

Think of it like this

Like the only key to a digital safe: anyone holding it can open the safe, and losing it may lock you out.

Real return

Investing

Your return after inflation is subtracted.

Think of it like this

Like checking how much more your pay can actually buy after prices have risen.

rebalancing

Investing

Nudging your investment mix back to the split you originally chose.

Think of it like this

Like straightening a leaning bookshelf so each section returns to the space you planned.

Recency bias

Behaviour

Assuming what just happened will keep happening.

Think of it like this

Like expecting sunshine tomorrow only because it was sunny today.

Redemption

Investing

The process of exchanging ETF shares for underlying assets.

Think of it like this

Like returning basket tokens and receiving the actual items represented by them.

Replication

Funds

How the fund produces the return of its target index.

Think of it like this

Like choosing whether to cook every ingredient in a recipe or use a shortcut that aims for the same taste.

Self-custody

Crypto

Holding your own crypto keys instead of asking an exchange or app to hold them.

Think of it like this

Like keeping the key to your own safe instead of leaving it with a bank or platform.

Smart contract

Crypto

A program stored on a blockchain that runs automatically when its conditions are met.

Think of it like this

Like a vending machine: when the right input arrives, the programmed action happens automatically.

Snowball method

Investing

Repaying the smallest balance first.

Think of it like this

Like clearing the smallest room first so an early win gives you energy to continue.

spread

Investing

The gap between the buying price and the selling price.

Think of it like this

Like the small gap between a shop's buying price and its selling price.

Stablecoin

Crypto

A crypto token designed to follow a currency such as the euro or US dollar.

Think of it like this

Like a digital token trying to walk in step with a currency such as the euro—though the link can still fail.

Staking

Crypto

Locking crypto to help operate a proof-of-stake network, usually in exchange for rewards.

Think of it like this

Like putting tokens to work helping a network operate and receiving a reward, while accepting extra risks and restrictions.

Standing order

Investing

A recurring transfer you set once with your bank.

Think of it like this

Like setting an alarm that moves money automatically instead of reminding you to do it.

Tax wrapper

Investing

An account type with specific tax treatment, like a UK ISA.

Think of it like this

Like a special coat around an account that can shelter investments from certain taxes.

TER

Funds

Total expense ratio — the yearly running cost of a fund, taken from the fund itself.

Think of it like this

Like a small yearly service charge quietly taken from the fund rather than sent as a separate bill.

Thematic

Investing

A strategy built around a long-term idea or trend.

Think of it like this

Like filling a basket around one big story, such as clean energy or robotics.

Time horizon

Investing

How long until you need the money.

Think of it like this

Like the date on a train ticket: it tells you how long your money has before it must arrive.

UCITS

Investing

The European fund standard with rules on diversification, disclosure and investor protection.

Think of it like this

Like an EU safety rulebook that eligible funds must follow before appearing on the shelf.

Value

Investing

A strategy focused on companies that look inexpensive by selected measures.

Think of it like this

Like looking through a sale rack for good businesses whose price may be unusually low.

Variable costs

Money

Spending that moves around, like groceries or going out.

Think of it like this

Like a tap: how much comes out changes depending on how you use it.

Volatility

Investing

How much a value bounces up and down along the way.

Think of it like this

Like waves on a boat: bigger waves mean a bumpier journey, even if the boat is still heading forward.

Wallet

Crypto

A tool that stores the keys used to access and move crypto assets.

Think of it like this

Like a key ring for crypto: it manages the keys that let you access assets recorded on a blockchain.

Put them into context in a five-minute lesson.

Open ETF 0 → 100