A–Z Glossary of UK Finance

Plain-English definitions for the mortgage, loan and credit terms you'll come across most often, from APR to tracker mortgages.

A

AER (Annual Equivalent Rate)
The standardised annual rate of return on a savings account, allowing fair comparison between accounts that pay interest at different frequencies. See our APR vs AER guide.
Affordability assessment
A lender's evaluation of whether you can comfortably manage a loan or mortgage repayment, based on income, outgoings and existing debt.
APR (Annual Percentage Rate)
The total annual cost of borrowing, including interest and most mandatory fees, expressed as a single percentage for fair comparison between credit products.
Arrangement fee
A fee charged by a lender for setting up a mortgage or loan, sometimes added to the loan amount rather than paid upfront.

B

Balloon payment
A large final payment due at the end of a PCP car finance agreement if you wish to keep the vehicle, also called the Guaranteed Minimum Future Value.
Base rate
The Bank of England's official interest rate, which directly affects tracker mortgages and indirectly influences fixed rates and savings.
Buy-to-let mortgage
A mortgage specifically for purchasing a property to rent out, assessed primarily on rental income coverage rather than personal salary.

C

CCJ (County Court Judgment)
A court order made against someone who hasn't repaid a debt, recorded on their credit file for up to 6 years.
Credit reference agency (CRA)
A company (Experian, Equifax or TransUnion in the UK) that collects and holds credit information used by lenders to assess applicants.
Credit utilisation
The percentage of your available credit limit currently being used — lower utilisation is generally viewed more favourably by lenders.

D

Debt-to-Income (DTI) ratio
Your total monthly debt repayments expressed as a percentage of your net monthly income, used by lenders to assess affordability.
Default
A formal record that payments on a debt have been persistently missed, remaining on your credit file for up to 6 years.
Deposit
The upfront sum you contribute towards a property or asset purchase, with the remainder covered by borrowing.

E

Early Repayment Charge (ERC)
A fee charged by some lenders if you repay a mortgage or loan, in full or in part, before an agreed period ends.
Electoral roll
The official register of UK voters, used by lenders to help verify your identity and address history.
Equity
The portion of your property's value that you own outright, calculated as property value minus any outstanding mortgage balance.

F

Fixed-rate mortgage
A mortgage where the interest rate is locked for an agreed period, keeping monthly repayments the same regardless of market rate changes.
FCA (Financial Conduct Authority)
The UK regulator responsible for authorising and supervising financial services firms, including lenders and mortgage brokers.
Further advance
Additional borrowing from your existing mortgage lender, secured against the same property, without switching to a new lender.

G

Guarantor loan
An unsecured loan where a second person agrees to make repayments if the main borrower is unable to, typically used by those with limited credit history.
Gifted deposit
Money given by a family member towards a property deposit, usually requiring a signed letter confirming it doesn't need to be repaid.

H

A credit check, visible to other lenders, carried out when you formally apply for credit — can have a small, temporary effect on your score.
Hire Purchase (HP)
A car finance agreement where you pay fixed instalments covering the vehicle's full value, becoming the owner once the final payment is made.

I

Interest-only mortgage
A mortgage where monthly payments cover only the interest, with the capital balance repaid separately at the end of the term.
IVA (Individual Voluntary Arrangement)
A formal agreement between a person and their creditors to repay debts over a set period, recorded on the credit file for up to 6 years.

L

LTV (Loan-to-Value)
The mortgage amount expressed as a percentage of the property's value — a lower LTV generally unlocks better interest rates.

M

Mortgage in principle
A lender's initial, non-binding indication of how much they might lend you, based on a quick assessment of income and credit history.

O

Offset mortgage
A mortgage linked to a savings account, where your savings balance reduces the amount of mortgage debt interest is charged on.

P

PCP (Personal Contract Purchase)
A car finance agreement with lower monthly payments based on depreciation, and a large balloon payment due if you want to keep the car at the end.
Product transfer
Moving to a new mortgage deal with your existing lender, without a full new application or switching to a different provider.

R

Representative APR
The APR that at least 51% of successful applicants receive — your own personal rate may be higher or lower.
Remortgage
Switching your mortgage to a new lender, or to a new deal, typically involving a full application and (usually) legal work.

S

SDLT (Stamp Duty Land Tax)
A tax paid on property purchases in England and Northern Ireland, calculated in bands based on the purchase price and buyer type.
Secured loan
A loan backed by an asset (commonly your home) as security, which the lender can claim if you fail to repay.
Shared Ownership
A scheme allowing you to buy a percentage share of a property and pay rent on the remainder, with the option to buy further shares over time.
A credit check that doesn't affect your credit score and isn't visible to other lenders, used for eligibility checks and your own report checks.
Stress test
A lender's check on whether you could still afford mortgage repayments if interest rates rose significantly above your actual rate.
SVR (Standard Variable Rate)
A lender's default interest rate, applied automatically once an initial fixed, tracker or discount deal ends, usually among their most expensive rates.

T

Tracker mortgage
A mortgage where the interest rate moves directly in line with a reference rate, almost always the Bank of England base rate, plus a fixed margin.