No Jargon

What does that
actually mean?

Every money word, in plain English, with a real example and how it connects to everything else.

How it all connects

Follow your money from payslip to pocket. Tap a word to jump to it.

You earnGross pay
Taken off firstIncome tax · NI · Student loan · PensionYour tax code and personal allowance decide the tax part
You keepNet pay
SavingAER, compound interest, ISA, LISA, emergency fund — measured against inflation
BorrowingAPR, overdrafts, BNPL — all recorded on your credit file

Sitting over everything: Bank Rate (moves savings and borrowing rates) and inflation (decides what your money is really worth).

TL;DRGross pay minus deductions is net pay. Everything else is about what you do with it: spend it, save it or borrow against it.

Gross pay

Pay

Your pay before anything is taken off. The number in your job offer.

Example: £25,000 a year is about £2,083 a month gross.

Connects to: Net pay (take-home), National Insurance

Net pay (take-home)

Pay

What actually lands in your account after tax, National Insurance, student loan and pension.

Example: £25,000 gross is about £1,793 a month net, with no student loan or pension.

Connects to: Gross pay, Tax code

Tax code

Pay

A code on your payslip telling your employer how much you can earn tax-free.

Example: 1257L is the most common. It means £12,570 tax-free a year.

Connects to: Personal allowance

Personal allowance

Pay

The amount you can earn each year before paying income tax. It shrinks once you earn over £100,000.

Example: £12,570 in 2026/27. On £25,000, tax is only charged on £12,430.

Connects to: Tax code, Gross pay

National Insurance

Pay

A deduction that builds your right to the State Pension and some benefits. Employees pay 8% on earnings between £12,570 and £50,270, then 2% above that.

Example: On £25,000 you pay about £994 a year.

Connects to: Gross pay, Net pay (take-home)

Student loan repayment

Pay

You repay 9% of what you earn above your plan’s threshold — not 9% of your whole pay, and not based on how much you owe.

Example: Plan 5’s threshold is £25,000, so on £30,000 you repay 9% of £5,000: £450 a year.

Connects to: Net pay (take-home)

Workplace pension

Pay

Under auto-enrolment, you and your employer pay into a pension. The legal minimum is 8% of qualifying earnings, with at least 3% from your employer.

Example: Opting out means losing your employer’s contribution too.

Connects to: Compound interest, Net pay (take-home)

National Living Wage

Pay

The legal minimum hourly pay for workers aged 21 and over. Lower rates apply at 18–20, 16–17 and for apprentices.

Example: £12.71 an hour from April 2026; £10.85 at 18–20.

Connects to: Gross pay

Compound interest

Saving

Earning interest on your interest. It works for you when saving and against you when borrowing.

Example: £1,000 at 4% becomes £1,040, then £1,081.60 the year after.

Connects to: AER, APR

Inflation (CPI)

Saving

How fast prices are rising. The Bank of England’s target is 2%.

Example: CPI was 3.5% in the year to September 2026. Savings earning less than that lose spending power.

Connects to: Real terms, AER

Real terms

Saving

A number adjusted for inflation, showing what money can actually buy.

Example: A 4% pay rise with 3.5% inflation is about a 0.5% real-terms rise.

Connects to: Inflation (CPI)

Bank Rate (base rate)

Saving

The Bank of England’s interest rate. When it moves, savings and borrowing rates usually follow.

Example: Bank Rate was 4% after the November 2026 decision.

Connects to: AER, APR

ISA

Saving

A savings or investment account where you pay no tax on the interest or growth. You can put in up to £20,000 a year (2026/27).

Example: Interest earned in a cash ISA never counts towards your tax bill.

Connects to: Lifetime ISA (LISA), AER

Lifetime ISA (LISA)

Saving

Open it aged 18–39, save up to £4,000 a year and the government adds 25% (up to £1,000). It’s for a first home costing up to £450,000, or for age 60.

Example: Taking money out for anything else costs 25% of the amount — more than the bonus.

Connects to: ISA

Emergency fund

Saving

Money kept aside for surprises like a broken phone or a gap between jobs. A common rule of thumb is three months of essential costs.

Example: Essentials of £1,000 a month means a £3,000 target.

Connects to: Overdraft

APR

Borrowing

Annual Percentage Rate: the yearly cost of borrowing, including interest and fees. A representative APR is the rate at least 51% of accepted applicants get.

Example: £1,000 at 20% APR costs about £200 in interest over a year if none is repaid.

Connects to: Credit file, Compound interest

Credit file

Borrowing

The record of how you borrow and repay, held by credit reference agencies such as Experian, Equifax and TransUnion. Lenders check it.

Example: Checking your own file is a soft search and never affects it.

Connects to: Buy now, pay later (BNPL), APR

Overdraft

Borrowing

Borrowing from your current account below £0. Banks charge a single simple annual interest rate rather than daily or monthly fees.

Example: A £500 overdraft at 39.9% costs about £17 a month if you stay in it.

Connects to: APR, Credit file

Buy now, pay later (BNPL)

Borrowing

Splitting a purchase into instalments. Since 15 July 2026 it’s regulated by the FCA, with affordability checks and access to the Financial Ombudsman.

Example: £120 in three payments of £40. Missing one can mean a fee and can show on your credit file.

Connects to: Credit file, APR

Direct debit vs. standing order

Bills

With a direct debit, a company takes a set or varying amount and you’re covered by the Direct Debit Guarantee. With a standing order, you send a fixed amount you control.

Example: Rent paid to a person is usually a standing order; a phone bill is a direct debit.

Connects to: Energy price cap

Energy price cap

Bills

Ofgem’s limit on the unit rate and standing charge suppliers can charge on standard tariffs. It caps the rates, not your total bill, and changes every quarter.

Example: From 1 October 2026: electricity 26.32p per kWh, typical household £1,723 a year.

Connects to: Standing charge, Direct debit vs. standing order

Standing charge

Bills

A fixed daily fee for being connected to energy, paid even if you use nothing.

Example: Electricity’s 54.83p a day is about £200 a year before you switch anything on.

Connects to: Energy price cap