What Is Loan to Value Ratio (LTV) in the UK?

Loan to value ratio is one of those terms that sounds technical but describes something simple. It answers the question: how much of this property's value am I borrowing? If the answer is 90%, you own 10% and the bank owns the other 90%. If the answer is 60%, you own 40% and the bank owns 60%. The bank's exposure — and therefore its risk — is the LTV percentage. The lower its exposure, the lower the rate it charges.

Understanding LTV helps you make smarter decisions at every stage of homeownership: how much deposit to save before buying, whether to overpay your mortgage, and how to get the best rate when you remortgage. Every LTV threshold you cross unlocks a better rate — and across a 25-year mortgage, those rate differences compound into tens of thousands of pounds.

How LTV is calculated

The formula is straightforward: divide the mortgage amount by the property value and multiply by 100.

The same formula applies when remortgaging — you use your current outstanding mortgage balance and the current market value of your property, not the original purchase price. This is why rising property prices improve your LTV even if you have not made any extra payments — the denominator (property value) has grown while the numerator (mortgage balance) has stayed the same or reduced.

LTV tiers and what they mean for your mortgage rate

UK mortgage lenders price their products across a series of LTV bands. Crossing from one band to the next lower one — say, from 90% to 85% — typically triggers a meaningful rate reduction. The most important thresholds are 95%, 90%, 85%, 80%, 75%, and 60%.

Rates are representative mid-2025 two-year fixed deals. Actual rates vary by lender, credit profile, property type, and product specifics. A 0.5% rate difference on £200,000 saves approximately £83/month — crossing an LTV threshold can be worth significant annual savings.

The real cost of a higher LTV — in pounds

The rate differences between LTV bands are not trivial. The table below shows the monthly payment and five-year cost difference between key LTV bands on a £250,000 mortgage over 25 years.

Based on loan amounts at each LTV on a £250,000 property, 25-year repayment mortgage at mid-2025 representative rates. The 95% LTV product carries a loan of only £237,500 versus £150,000 for 60% LTV — the combined effect of higher loan AND higher rate produces the largest payment difference.

The most important line in this table is the jump from 90% to 95% LTV — an additional £96/month and £5,760 over five years compared to the 90% rate. This quantifies exactly what saving an extra 5% deposit is worth: approximately £5,760 over a five-year fixed period on a £250,000 property. For buyers who are just short of the 90% threshold, this calculation often justifies a few extra months of saving before buying.

How your LTV changes over time — and why it matters at remortgage

Your LTV is not fixed. It changes throughout your mortgage term as a result of two forces: capital repayment reduces the loan balance (on a repayment mortgage), and property price changes alter the property value. When you remortgage, your LTV is recalculated from scratch using your current balance and the current property value — giving you potentially much better rates than when you first borrowed.

Five-year LTV journey: £220,000 mortgage on a £275,000 property

• Year 0 (purchase): LTV = 220,000 ÷ 275,000 = 80%
• Year 5 (repayment mortgage at 4.5%): balance reduced to approximately £194,000; property value risen to £310,000. LTV = 194,000 ÷ 310,000 = 62.6%
• Rate improvement: from approximately 4.45% (80% LTV) to approximately 4.1% (60% LTV tier). Monthly saving at remortgage: approximately £40/month.

This journey from 80% to 62.6% LTV in five years illustrates why remortgaging is a material financial event, not just an administrative task. The combination of capital repayment and house price appreciation can shift you across multiple LTV bands in a single mortgage cycle — with each band crossed delivering better rates.

What if house prices fall?

If property values fall, your LTV worsens — the loan stays the same but the property it is secured against is worth less. Falling into a higher LTV band at remortgage means worse rates. If your LTV rises above 90% when you come to remortgage, your options may be significantly restricted. This is the risk of buying at high LTV (95%) — a modest 5–10% property price fall can move you into negative equity (LTV above 100%), where you cannot remortgage at all until property values recover or you pay down the balance.

How to improve your LTV

• Save a larger deposit before buying. The most straightforward way to start at a lower LTV. Each 5% extra deposit you save before purchasing puts you in a better rate band from day one. The compound saving over 25 years from starting at 85% rather than 90% is substantial.
• Choose a less expensive property. If you have a fixed deposit amount, buying at a lower purchase price mechanically improves your LTV. A £25,000 deposit on a £200,000 property gives 87.5% LTV. The same £25,000 on a £180,000 property gives 86.1% LTV — which might cross the threshold to a better rate band.
• Accept family financial help. Gifted deposits from family members reduce the mortgage needed and improve LTV. Gifted deposits are legal and tax-free for the recipient. Lenders require confirmation that the gift is not a loan and will not be repaid — a standard gifted deposit letter from the donor is required.
• Overpay your mortgage. Every pound of overpayment reduces your outstanding balance. On an interest-only or early-repayment basis, targeted overpayments can push you into the next LTV band faster — particularly valuable if you are close to a threshold (e.g. at 92% LTV, bringing it below 90% before your next remortgage). See our overpayment calculator to model this.
• Wait for property values to rise. If you are sitting at 87% LTV and want to reach 85%, house price growth alone may close the gap without any additional payment — particularly in a rising market. However, this is passive and uncertain, and can work in reverse if prices fall.
• Get an up-to-date valuation at remortgage. When you remortgage, the lender's valuation may come in higher than you expected — particularly if you have made improvements or if local prices have risen. A higher valuation lowers your LTV and may unlock a better rate. Some brokers advise commissioning a RICS valuation to present alongside the mortgage application in cases where the automated valuation model might undervalue the property.

LTV in different mortgage contexts

LTV for buy-to-let mortgages

Buy-to-let lenders typically require a minimum 75% LTV (25% deposit). BTL rates at 75% LTV are generally 0.5–1.5% higher than equivalent residential rates. Moving to 65% or 60% LTV on a BTL mortgage (a 35–40% deposit) unlocks materially better rates and a wider range of lenders. For BTL investors, a larger deposit also improves the interest cover ratio (ICR) calculation — making it easier to pass the rental income affordability test.

LTV when remortgaging to release equity

When you remortgage to release equity, your LTV increases — the mortgage balance goes up while the property value stays the same. Releasing equity on a property currently at 50% LTV (significant equity from repayments and price growth) to 70% LTV is very different from trying to release equity from a property already at 80% LTV. Most remortgage lenders cap at 85% LTV for equity release; some will go to 90% with a strong income and credit profile. Always model what the higher LTV means for your rate before proceeding. See our equity release guide for the full picture.

Negative equity — when LTV exceeds 100%

Negative equity occurs when your outstanding mortgage balance exceeds your property's current value — an LTV above 100%. This can happen if you bought at high LTV and property prices subsequently fell. When in negative equity, you cannot remortgage to a new lender (no lender will accept a loan exceeding the property value as security) and selling the property would not cover the mortgage in full. The options are to wait for prices to recover, make substantial overpayments to reduce the balance below property value, or — in severe cases — contact your lender about managed solutions. The negative equity risk is why buying at 95% LTV with only a 5% buffer against price falls carries more risk than lower-LTV purchases.

Frequently asked questions

• What is loan to value ratio (LTV) in the UK?
  LTV is your mortgage amount as a percentage of your property's value. It is calculated as: (mortgage ÷ property value) × 100. A £180,000 mortgage on a £200,000 property = 90% LTV, with a 10% deposit. LTV is the single most important factor in your mortgage rate — lower LTV = lower rate because the lender faces less risk.
• How does LTV affect your mortgage rate?
  LTV has a direct and significant impact on mortgage rates. The difference between a 60% LTV mortgage and a 95% LTV mortgage is typically 1–2.5% in interest rate, translating to £150–£300/month on a standard UK mortgage. Every LTV threshold you cross by saving more deposit or paying down the mortgage unlocks a better rate. The 90%→85% step and the 85%→80% step are the most financially rewarding for typical FTBs.
• What is a good LTV for a UK mortgage?
  60% LTV unlocks the best available rates at most UK lenders. 75% LTV is strong and competitive. 85% LTV is solid. 90% LTV is the most common first-time buyer level — rates are noticeably higher than at 85% but there is a good range of lenders. 95% LTV is the entry level and carries the highest rates and fewest options. For most FTBs, reaching 10% deposit (90% LTV) is the practical first target, with 15% (85% LTV) as a worthwhile stretch goal.
• How can I improve my LTV?
  You can improve LTV by saving a larger deposit, choosing a less expensive property, overpaying the mortgage to reduce the balance, accepting gifted family contributions, or benefiting from rising property values over time. When remortgaging, your LTV is recalculated on current balance and current property value — years of repayment and price growth often move borrowers across multiple LTV bands, unlocking significantly better rates.
• What happens if my LTV goes above 100%?
  An LTV above 100% is called negative equity — your mortgage balance exceeds your property's value. You cannot remortgage to a new lender in this position, and selling would not cover the mortgage in full. Negative equity typically occurs when high-LTV buyers face falling property prices. The risk is why buying at 95% LTV with only a 5% buffer is more financially risky than lower-LTV purchases. Waiting until the property value recovers or making significant overpayments to bring the balance below value are the main options.

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