Guide · 9 min read

LTV and mortgage rate tiers explained.

Updated May 2026

The mortgage rate you are offered is not the same for everyone. Lenders price based on risk, and the single biggest risk signal is your loan-to-value ratio — how much of the property's value you are borrowing. The lower the LTV, the better the rate.

What is LTV?

Loan-to-value (LTV) is the mortgage balance expressed as a percentage of the property's value:

A £180,000 mortgage on a £250,000 property has an LTV of 72%. A £225,000 mortgage on the same property has an LTV of 90%. The deposit is the inverse: a 72% LTV borrower has a 28% deposit; a 90% LTV borrower has a 10% deposit.

At purchase, the LTV is set by your deposit size. At remortgage, it is determined by your outstanding balance and the current value of the property — which may have changed since you bought.

Why LTV affects the rate you're offered

Lenders price mortgage rates based on the probability and severity of default. A borrower at 60% LTV who defaults leaves the lender with significant equity buffer — they can repossess and sell the property for considerably less than market value and still recover the outstanding loan. A borrower at 95% LTV who defaults leaves the lender much closer to zero margin, especially in a falling market. Higher risk demands a higher return, so higher LTV products carry higher rates.

This is not punitive — it reflects the actuarial cost of the risk the lender is taking. At 95% LTV, the lender is exposed to a relatively small house price decline wiping out their security. At 60% LTV, they would need a 40% fall before they were in trouble. That difference in risk profile is priced into every rate tier.

Common UK rate tiers

Most mainstream UK lenders price mortgages in the following LTV brackets. Rates improve meaningfully at each step down:

The rate difference between adjacent tiers varies over time and between lenders, but a move from 75% to 60% LTV has historically saved borrowers 0.2–0.5 percentage points. On a £200,000 mortgage, that is £400–£1,000 per year in interest savings. The move from 90% to 85% LTV can save a similar or larger amount because the market is thinner at higher LTV and competition is less intense.

Worked example: tier-crossing in practice

A borrower has a £180,000 mortgage on a property currently valued at £250,000.

• Current LTV: 180,000 ÷ 250,000 × 100 = 72%
• This falls in the 60.01–75% tier

To cross into the better ≤60% tier, the outstanding balance needs to be at most £150,000 (60% × £250,000). That requires a reduction of £30,000 from the current balance.

There are three routes to that reduction:

1. Overpayments — paying down the balance directly. At £200 per month above the standard payment, the £30,000 reduction takes approximately 12–14 years, depending on the current rate. A lump-sum payment of £30,000 achieves it immediately.
2. Property value growth — if the property rises in value, the LTV falls even without balance reduction. The same £180,000 balance on a £300,000 property is 60% LTV exactly. A £50,000 rise in value (20%) moves this borrower from the 75% tier to the boundary of the 60% tier.
3. A combination — smaller overpayments plus moderate property value growth can achieve the tier crossing faster than either alone.

The key action is to request a new valuation at remortgage time if you believe the property has increased significantly in value. Many borrowers remortgage assuming the property is worth the same as when they bought and miss the opportunity to benefit from a better tier.

LTV at purchase: making your deposit work harder

When buying, the LTV is within your control to the extent that you can adjust your deposit size. If your deposit gives you an LTV of, say, 81%, you are in the 80.01–85% tier. Adding just over 1% more deposit crosses you into the ≤80% tier. The question to ask before exchange is: does the rate improvement from crossing this tier, applied over the new fixed-rate period, save more than the additional deposit would cost?

This calculation depends on your specific mortgage amount and the rate differential at your lender. A broker can model the exact saving for your case in minutes. In some situations — particularly where the deposit top-up crosses from 85% to 80% LTV — the saving over a 5-year fix can exceed £2,000 to £3,000, making it well worth delaying the purchase briefly to save more deposit.

LTV at remortgage: what actually gets assessed

When you remortgage, the lender assesses LTV based on the new valuation of the property, not the original purchase price. If house prices in your area have risen since you bought, your LTV may be lower than you think — even if you haven't made any overpayments. Conversely, if values have fallen, your LTV may be higher, which could push you into a worse tier.

Lenders either instruct a formal valuation (a surveyor visits the property) or use an automated valuation model (AVM) based on comparable sales data. Formal valuations are more accurate but add cost and time. For most straightforward remortgages, the AVM is used. If you believe the AVM undervalues your property — because you have extended, renovated, or the local market has moved sharply — you can request a formal valuation, though this may incur a fee.

The 95% LTV market

At the top end of the LTV scale, the market is thinner and products carry materially higher rates. 95% LTV products — requiring only a 5% deposit — are available from mainstream lenders and through the government's Mortgage Guarantee Scheme, which underwrites part of the lender's risk. Rates at 95% LTV are typically 0.5–1.0 percentage points higher than at 90% LTV, which translates to a meaningful monthly payment increase on larger loan amounts.

First-time buyers at high LTV may also face tighter affordability criteria, as the stress test at a higher rate is more demanding. If affordability is the binding constraint rather than deposit size, stretching to a lower deposit to buy sooner may make the stress test harder to pass — in which case saving a larger deposit serves a dual purpose.

What the calculator shows

The LTV calculator on this site takes your current mortgage balance and property value, calculates your LTV percentage, and shows which standard rate tier you fall into. It also shows the balance reduction required to reach the next tier down — whether through overpayments, property value growth, or a combination. Use it at each remortgage to check whether you are close to a tier boundary and whether adjusting the timing or size of your deposit could move you into a better bracket.

Try the calculator: LTV rate tier calculator →