Loan to Value: Common Mistakes, Tips and FAQs
Introduction
Property numbers are large, so small misunderstandings turn into expensive mistakes. The rules also differ across England, Scotland, Wales and Northern Ireland, which catches out many buyers.
This article covers the most common mistakes people make with loan to Value, what really moves the result, and answers to the questions we hear most often.
Why it matters
A few percentage points on LTV, rate or tax can change what you pay by thousands of pounds. Running the numbers early helps you set a realistic budget and compare deals properly.
How it's calculated
LTV is your mortgage divided by the property value, as a percentage. Lower LTV bands (60%, 75%, 85%) usually unlock cheaper rates.
What changes the result most
We raised each input by 10% on its own, starting from a typical example where loan to value is 90.00%. Here's what happened:
- Raising deposit or equity from £30,000 to £33,000 changes loan to value to 89.00% (-1.1%).
- Raising property value from £300,000 to £330,000 changes loan to value to 90.91% (+1.0%).
Focus first on deposit or equity, which has the biggest effect in this example.
Common mistakes to avoid
- Forgetting to budget for stamp duty, legal fees and surveys on top of the deposit.
- Comparing mortgage deals on rate alone and ignoring arrangement fees.
- Assuming first-time buyer relief applies above the price limit.
- Calculating rental yield on rent alone without deducting running costs.
A quick example
With the inputs below, loan to value comes out at 90.00%.
| Input | Value |
|---|---|
| Property value | £300,000 |
| Deposit or equity | £30,000 |
Tips
- Stamp duty rules differ by nation: SDLT in England and Northern Ireland, LBTT in Scotland and LTT in Wales.
- Lenders price mortgages in LTV bands, so a slightly bigger deposit can unlock a noticeably lower rate.
- Always compare the total cost of a mortgage deal including fees, not just the headline rate.
- Most lenders let you overpay up to 10% of the balance each year without early repayment charges.
Frequently asked questions
What's the quickest way to work out loan to Value?
Use our free loan to Value (LTV) Calculator. It applies this method automatically: LTV is your mortgage divided by the property value, as a percentage. Lower LTV bands (60%, 75%, 85%) usually unlock cheaper rates.
Do these calculators cover Scotland and Wales?
Yes. We have separate calculators for LBTT in Scotland and Land Transaction Tax in Wales, as well as SDLT for England and Northern Ireland.
Are the mortgage figures a mortgage offer?
No. They are estimates. A lender's decision depends on your credit history, outgoings and their own affordability checks.
How accurate is the monthly repayment?
It uses the standard repayment formula and matches lender illustrations closely for a fixed rate, but actual payments can vary if your rate changes.
Related calculators
- Stamp Duty Calculator
- LBTT Calculator (Scotland)
- Land Transaction Tax Calculator (Wales)
- Mortgage Calculator
- Mortgage Affordability Calculator
- Rental Yield Calculator
Try the loan to Value (LTV) Calculator
Enter your own figures and get an instant answer – free, no sign-up.
Open the loan to Value (LTV) CalculatorFor the full method, read How to Calculate Loan to Value in the UK: Step-by-Step Guide.
More property and mortgages guides
- Stamp Duty: Common Mistakes, Tips and FAQs
- LBTT in Scotland: Common Mistakes, Tips and FAQs
- Land Transaction Tax in Wales: Common Mistakes, Tips and FAQs
- Mortgage Repayments: Common Mistakes, Tips and FAQs
- How Much You Can Borrow for a Mortgage: Common Mistakes, Tips and FAQs
This guide is general information, not financial, tax, legal or medical advice. Figures use 2025/26 UK rates where relevant. Always check GOV.UK or NHS.uk for official guidance.