This glossary provides general explanations of financial terms for educational purposes. It does not constitute financial advice. The definitions here are simplified for accessibility. For decisions affecting your finances, please consult a qualified financial adviser.
Budgeting Terms
Budget
A plan for your money over a set period, usually a month. A budget lists all your income and all your expected outgoings, so you can see whether you have money left over or whether you're spending more than you earn. Creating a budget doesn't mean you have to be restrictive. It simply means you're aware of where your money is going.
Fixed Expenses
Costs that stay the same every month regardless of what you do. Rent or mortgage payments, insurance premiums, and subscription services at a fixed price are all examples. Because these don't change, they're usually the easiest part of a budget to plan around.
Variable Expenses
Costs that change from month to month depending on your behaviour or circumstances. Grocery shopping, fuel, eating out, and clothing purchases are all variable. These are also the areas where you have the most control, which makes them important to track carefully.
Disposable Income
The money you have left after paying tax and National Insurance. This is different from discretionary income, which is what remains after essential living costs like rent, food and utilities are paid. Understanding the difference helps when planning savings or discretionary spending.
Net Income
Your take-home pay after all deductions. When building a budget, it's your net income you should work with, not your gross (before-tax) salary. The difference can be significant, particularly if you're a higher-rate taxpayer or have pension contributions deducted at source.
Credit & Borrowing
APR (Annual Percentage Rate)
The annual cost of borrowing money, expressed as a percentage. APR includes both the interest rate and any standard fees associated with the credit product. It's designed to help you compare the true cost of different borrowing options on a like-for-like basis. A lower APR generally means cheaper borrowing, though other factors like repayment terms also matter.
Credit Score
A numerical representation of how creditworthy you appear to lenders, based on your borrowing history and financial behaviour. In the UK, the main credit reference agencies are Experian, Equifax and TransUnion. Your score affects whether lenders will offer you credit and on what terms. You can check your credit report for free through services like Clearscore or the agencies directly.
Credit Utilisation
The proportion of your available credit that you're currently using. If you have a credit card with a £2,000 limit and you've spent £1,000 on it, your utilisation is 50%. High utilisation can negatively affect your credit score, even if you pay your bill in full each month. Keeping utilisation lower is generally considered healthier for your credit profile.
Overdraft
An arrangement with your bank that allows you to spend more than your account balance, up to an agreed limit. Arranged overdrafts are agreed in advance and usually have a defined interest rate. Unarranged overdrafts, where you go beyond your limit or spend below zero without an arrangement, typically come with higher charges. Since 2020, UK banks must charge a single annual interest rate for overdrafts rather than daily fees.
Minimum Payment
The smallest amount you can pay on a credit card or loan in a given month without being considered in default. Paying only the minimum keeps you out of trouble with the lender but means you'll pay significantly more in interest over time, as the remaining balance continues to accrue charges. Understanding this distinction is important for managing credit card debt.
Savings & Accounts
AER (Annual Equivalent Rate)
The interest rate on a savings account expressed as an annual figure, taking into account how often interest is compounded. AER makes it easier to compare savings accounts that pay interest at different intervals. A higher AER means your savings will grow faster, all else being equal.
ISA (Individual Savings Account)
A type of savings or investment account available in the UK that allows you to save or invest up to a set annual allowance without paying tax on the interest or returns. The main types are Cash ISAs and Stocks and Shares ISAs. The annual ISA allowance is set by the government and applies per tax year. ISAs are a commonly used savings tool in the UK, though specific product recommendations are outside the scope of our educational content.
Emergency Fund
Money set aside specifically to cover unexpected expenses or a temporary loss of income. Unlike other savings, an emergency fund should be kept in an accessible account so you can reach it quickly when needed. Common guidance suggests aiming for enough to cover several months of essential expenses, though the right amount varies by individual circumstances.
Compound Interest
Interest calculated on both the original amount and the interest already earned. Over time, this causes savings to grow faster because you're earning interest on your interest as well as your principal. It works in reverse for debt, where interest accumulates on the outstanding balance including previously charged interest, which is why carrying debt over time can become costly.
Banking Basics
Direct Debit
An instruction you give to your bank authorising a company to collect varying amounts from your account on agreed dates. The company can change the amount, but they must notify you in advance. Direct debits are commonly used for utility bills, insurance and council tax. The Direct Debit Guarantee protects you if a payment is taken in error.
Standing Order
An instruction you give to your bank to pay a fixed amount to another account on a regular schedule. Unlike a direct debit, you control the amount and timing, and only you can change it. Standing orders are useful for regular savings transfers or paying rent where the amount doesn't change.
Sort Code and Account Number
The two pieces of information needed to identify a UK bank account. The sort code is a six-digit number identifying your bank and branch. The account number is an eight-digit number unique to your account. Together, they allow money to be sent to and from your account via Faster Payments, BACS or CHAPS.
FSCS Protection
The Financial Services Compensation Scheme protects eligible deposits held with UK-authorised banks and building societies up to a defined limit per institution. This means that if a bank fails, your savings up to the protected amount are covered. It's worth being aware of this when holding larger amounts across different banks.
Tax & Benefits
Personal Allowance
The amount of income you can earn each tax year before you start paying Income Tax. This figure is set by the government and applies to most UK residents. Income above the personal allowance is taxed at different rates depending on how much you earn. Knowing your personal allowance helps you understand your take-home pay and plan your finances accordingly.
National Insurance (NI)
Contributions made by employees, employers and the self-employed that fund certain state benefits including the State Pension, statutory sick pay and maternity pay. Your National Insurance number is unique to you and used by HMRC to track your contributions. The amount you pay depends on how much you earn and your employment status.
Council Tax
A local tax charged by UK councils to help fund local services such as waste collection, roads and social care. The amount you pay depends on the valuation band of your property and the rate set by your local council. Various discounts and exemptions apply depending on your circumstances, including reductions for single occupants and some benefit recipients.
Universal Credit
A UK government benefit that replaced several previous benefits including Jobseeker's Allowance, Housing Benefit and Working Tax Credit. It's designed to support people who are on a low income or out of work. The amount you receive depends on your circumstances, income and housing costs. Universal Credit is administered by the Department for Work and Pensions (DWP).
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