Glossary Of Mortgage Terms Every UK Homebuyer Should Know
Buying a home can be exciting, but it also means learning a whole new language. From ‘loan to value’ to ‘fixed rates’ and ‘agreement in principle’, mortgage terminology can feel daunting if you’re purchasing a property for the first time.
Understanding these common mortgage terms will help you feel more confident throughout the home-buying process and make it easier to compare mortgage products and speak with lenders or mortgage advisors.
Agreement in Principle (AIP)
Also known as a Decision in Principle or Mortgage in Principle, an Agreement in Principle is an indication from a lender of how much they may be willing to lend based on basic financial information.
Although it is not a formal mortgage offer, it can demonstrate to estate agents and sellers that you are a serious buyer.
Deposit
Your deposit is the amount of money you contribute towards purchasing a property. The larger your deposit, the less you usually need to borrow, which can often result in access to better mortgage deals and lower interest rates.
Fixed rate mortgage
A fixed rate mortgage keeps your interest rate the same for an agreed period, commonly two, three or five years. This means your monthly repayments remain predictable during the fixed term, making budgeting easier.
Variable rate mortgage
With a variable rate mortgage, the interest rate can rise or fall over time. Your monthly repayments may therefore increase or decrease depending on market conditions and your lender’s rates.
Loan to Value (LTV)
Loan to Value, often shortened to LTV, is the percentage of the property’s value that you borrow.
For example:
- Property value: £300,000
- Deposit: £60,000
- Mortgage: £240,000
This gives you an LTV of 80 per cent.
Generally, the lower your LTV, the wider your choice of mortgage products.
Mortgage term
The mortgage term is the length of time you agree to repay your mortgage. Most terms range between 25 and 35 years, although some borrowers choose shorter or longer periods depending on affordability and financial goals.
Mortgage offer
Once your lender has fully assessed your application, they may issue a formal mortgage offer. This confirms the amount they are prepared to lend and the terms of the mortgage.
Affordability assessment
Before approving a mortgage, lenders carry out an affordability assessment. They consider factors such as:
- Income
- Monthly expenditure
- Existing debts
- Credit commitments
- Employment status
This helps determine whether you can comfortably afford the mortgage repayments.
Credit score
Your credit score reflects your borrowing history and financial behaviour. While each lender has its own criteria, maintaining a good credit history can improve your chances of securing a competitive mortgage.
Stamp Duty
Stamp Duty Land Tax (SDLT) is a tax that may apply when purchasing property in England and Northern Ireland, depending on the property’s value and your circumstances. Different rules apply in Scotland and Wales.
Why understanding mortgage terminology matters
Knowing these key terms makes it easier to compare mortgage products, ask informed questions and avoid unexpected surprises during the buying process.
A qualified mortgage broker can explain any unfamiliar terminology, compare lenders on your behalf and help you choose a mortgage that suits both your budget and long-term plans.