The 20 Mortgage Terms Every First-Time Buyer in the UK Must Know

Buying your first home in the UK can feel daunting—but knowing the mortgage lingo helps you make informed decisions. Here are 20 key terms every first-time buyer should understand:

  1. Mortgage Principal – The amount you borrow from the lender.
  2. Interest Rate – The cost of borrowing money, expressed as a percentage.
  3. APR (Annual Percentage Rate) – Total cost of the mortgage including fees.
  4. Fixed-Rate Mortgage – Interest rate stays the same for a set period.
  5. Variable Rate Mortgage – Interest rate can change, usually linked to the Bank of England base rate.
  6. Deposit – Upfront money paid toward the property (usually 5–20%).
  7. Leasehold/Freehold – Property Tenure
  8. Stamp Duty Land Tax (SDLT) – Tax on property purchases above a threshold.
  9. Mortgage Fees / Arrangement Fees – Charges for setting up the mortgage.
  10. Mortgage Term – The length of the mortgage, often 25 years.
  11. Repayment Mortgage – Monthly payments cover both interest and principal.
  12. Interest-Only Mortgage – Monthly payments cover only interest; principal is repaid at the end.
  13. Mortgage in Principle (MIP/AIP/DIP) – Estimate of how much a lender will lend you.
  14. Mortgage Broker – Professional who helps you find the best mortgage deal.
  15. Home Equity – The portion of your home you own outright.
  16. Remortgaging – Replacing your current mortgage with a new deal, often to save money.
  17. Loan-to-Value (LTV) – Percentage of the property value borrowed.
  18. Early Repayment Charge (ERC) – Fee for paying off your mortgage early.
  19. Conveyancing – Legal process of transferring property ownership.
  20. Underwriting / Mortgage Approval – Lender’s assessment of your application.

Understanding these terms will make the buying process smoother and help you feel confident when securing your first home in the UK.


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