Loan-to-Value (LTV) Calculator

Calculate your LTV ratio and see how it affects mortgage rates and borrowing options.

Last updated: April 2026 · Source: FCA — Mortgages overview

£
£

Disclaimer

This calculator is provided for informational purposes only and should not be considered as financial or tax advice. All calculations are performed locally in your browser — no personal data is collected or sent to our servers. Rates and thresholds are sourced from HMRC and GOV.UK and are updated for the current tax year. Always verify results with HMRC or consult a qualified professional before making financial decisions.

How It Works

Loan-to-Value (LTV) ratio is the percentage of the property value that you are borrowing. It is calculated as: LTV = (Mortgage amount ÷ Property value) × 100. A £180,000 mortgage on a £200,000 property gives a 90% LTV. The lower your LTV, the better mortgage rates you can access.

UK lenders typically offer their best rates at 60% LTV, with competitive rates up to 75% LTV. Rates increase noticeably above 80% LTV, and again above 90%. The maximum LTV for most residential mortgages is 95%. For buy-to-let, the typical maximum is 75-80%. First-time buyer schemes may offer up to 95% LTV.

This calculator works in both directions: enter a property value and deposit to see your LTV, or enter a target LTV to see what deposit you need. It also shows which LTV tier your deposit places you in and the typical rate difference between tiers.

Example: £275,000 property, £35,000 deposit

  1. Mortgage required: £275,000 − £35,000 = £240,000
  2. LTV: £240,000 ÷ £275,000 × 100 = 87.3%
  3. LTV tier: 85-90% (rates typically 0.3-0.5% higher than 75%)
  4. To reach 75% LTV: deposit needed = £68,750
  5. Extra deposit for 75% tier: £33,750

Source: FCA — Mortgages overview

Frequently Asked Questions

What does the Loan-to-Value (LTV) Calculator do?
Calculate your LTV ratio and see how it affects mortgage rates and borrowing options. All calculations are performed in your browser using official UK rates and thresholds.
Is this based on current interest rates?
You can enter any interest rate to model different scenarios. Check the Bank of England base rate and current mortgage deals from lenders for the latest rates.
Should I get professional advice?
This calculator provides estimates for guidance only. For a formal mortgage offer, speak to a mortgage broker or lender who can assess your full circumstances and provide personalised advice.