What Affects Your Mortgage Rate and How to Improve It

The mortgage rate you are offered depends on a combination of factors, some within your control and some driven by the wider market. Understanding what influences mortgage pricing helps you position yourself for the most competitive deal available for your circumstances. This guide explains the key factors that affect your rate and the practical steps you can take before applying. Mortgage One can search the whole of market to compare products and identify where the strongest options sit for your specific situation.

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Your home may be repossessed if you do not keep up repayments on your mortgage.

For a free initial consultation about your mortgage rate options, call 01202 155992 or contact Mortgage One.

How Loan-to-Value Affects Your Rate

Loan-to-value is the single biggest factor within your control that affects the rate you are offered. LTV is the ratio of the mortgage to the property’s value, expressed as a percentage. A £180,000 mortgage on a £200,000 property is 90% LTV. A £150,000 mortgage on the same property is 75% LTV.

Lenders price mortgages in LTV bands, and rates typically improve at each step down: 95%, 90%, 85%, 80%, 75% and 60%. Even a small increase in your deposit that moves you into a lower band can make a meaningful difference to the rate available. Mortgage One’s mortgage deposits guide explains how deposit size affects your options.

Credit Score and Rate Pricing

Your credit history affects both whether you are approved and, in some cases, the rate you are offered. Lenders use credit scoring to assess risk, and applicants with clean credit records typically qualify for a wider range of products including the most competitively priced deals. Any missed payments, defaults or county court judgements on your file may limit the lenders available to you, and the rates on specialist products tend to be higher than mainstream alternatives.

Taking steps to improve your credit position before applying can make a practical difference. Mortgage One’s guide to improving your credit score explains what lenders look for and how to prepare.

Choosing the Right Rate Type

The type of mortgage you choose affects both the rate and the level of risk you take on:

•       Fixed rates lock your payment for a set period, giving certainty. Two-year fixes typically carry a slightly higher rate than five-year fixes in some market conditions, but this varies. Mortgage One’s fixed-rate mortgage guide covers the trade-offs.

•       Tracker rates follow the Bank of England base rate at a set margin. They can be cheaper than fixed rates when the base rate is stable or falling, but your payments will rise if the base rate increases. Mortgage One’s tracker mortgage guide explains how these work.

•       Standard variable rates are the lender’s default rate after your deal ends. They are almost always higher than the rates available on new deals and can change at any time at the lender’s discretion. Mortgage One’s SVR guide explains why moving off an SVR promptly usually makes financial sense.

The right rate type depends on your circumstances, how long you plan to stay in the property and your appetite for risk. The headline rate alone does not determine the overall cost.

To compare mortgage rate types for your circumstances, call 01202 155992 or contact Mortgage One.

Looking Beyond the Headline Rate

The interest rate is only one component of the total cost of a mortgage. When comparing deals, you should also consider:

•       Arrangement fees. Some of the lowest headline rates come with high arrangement fees, sometimes over £1,000. A slightly higher rate with no fee can work out cheaper over the deal period, particularly on smaller loans.

•       Early repayment charges. If you may need to repay or switch your mortgage before the deal period ends, the early repayment charge structure matters. Charges typically range from 1% to 5% of the outstanding balance.

•       Booking and valuation fees. Some lenders charge these on top of the arrangement fee. Others include a free valuation or cashback to offset upfront costs.

•       Overpayment flexibility. If you want to make overpayments to reduce the balance faster, check the lender’s policy. Most allow up to 10% per year without penalty. Mortgage One’s mortgage repayments calculator can help you model different scenarios.

Broker-Exclusive Products and Green Mortgages

A number of lenders offer mortgage products exclusively through intermediaries. These broker-only deals are not available to borrowers who apply directly to the lender or through comparison websites, and they can sometimes be more competitively priced than the equivalent direct product. Working with a whole of market broker gives you access to these alongside everything on the open market. Mortgage One’s guide to how brokers find you competitive rates explains this in more detail.

Some lenders also offer green mortgage products with reduced rates for properties that meet certain energy efficiency standards, typically an EPC rating of A or B. If your property qualifies, this can be a route to a lower rate. Not all lenders offer green products, and the criteria vary, so broker access is important for identifying these deals.

Remortgaging to a More Competitive Rate

If your current deal has ended or is approaching its expiry, remortgaging is the most common way to secure a more competitive rate. Most lenders allow you to apply up to six months before your current rate expires, giving you time to lock in a deal without rushing. Moving off a standard variable rate onto a new fixed or tracker deal will almost always reduce your monthly payments. Mortgage One’s remortgaging guide explains the full process, costs and timing.

What Drives Mortgage Rates in the Wider Market

Individual mortgage rates are influenced by factors beyond your personal profile. The Bank of England base rate sets the floor for variable and tracker pricing. Fixed rates are driven primarily by swap rates, which reflect market expectations of where interest rates will be over two or five years. Lender competition, funding costs and regulatory capital requirements also play a role.

The base rate has been held at 3.75% since December 2025, and the outlook for further movement in 2026 remains uncertain. Mortgage One’s rate forecast page tracks the latest market expectations and explains what they mean for mortgage pricing.

Source: https://www.bankofengland.co.uk/monetary-policy-summary-and-minutes/2026/march-2026

How Mortgage One Can Help

Mortgage One has whole of market access and can compare products across the intermediary-accessible market to identify the deals that offer the strongest combination of rate, fees, flexibility and criteria fit for your circumstances. Rather than applying speculatively to the lender advertising the lowest headline rate, Mortgage One checks your eligibility first and applies only where there is a realistic prospect of approval. This avoids unnecessary credit searches that could affect your credit file.

Whether you are buying your first home, remortgaging at the end of a deal, or looking to restructure existing borrowing, Mortgage One can explain the options, model the costs and recommend the most suitable product for your situation.

For a free initial consultation, call 01202 155992 or contact Mortgage One.

The information provided in this article is for general guidance only and does not constitute personal or regulated financial advice. If you’d like to understand what these moves could mean for you, speak to Mortgage One. We can explain your options and timings based on your specific circumstances.

Some Buy to Let mortgages are not regulated by the Financial Conduct Authority.

FAQs

1. What is the single biggest factor that affects my mortgage rate?

Your loan-to-value ratio. The lower your LTV, the lower the risk to the lender and the more competitive the rates available. Moving from 90% LTV to 85% or from 80% to 75% can make a noticeable difference to the rate offered.

2. Should I always choose the mortgage with the lowest headline rate?

Not necessarily. A low headline rate may come with a high arrangement fee that makes the total cost higher than a slightly higher rate with no fee. Compare the overall cost over the deal period, including fees, not just the rate.

3. Can a mortgage broker get me a rate I cannot find myself?

In many cases, yes. Some lenders offer products exclusively through intermediaries. A whole of market broker can access these alongside everything available on the open market.

4. Will my credit score affect the rate I am offered?

Yes. Applicants with clean credit records have access to a wider range of products, including the most competitively priced deals. Adverse credit limits the lender panel and the rates available tend to be higher.

5. Is it worth remortgaging just to get a lower rate?

Usually, yes, if your current deal has ended and you are on a standard variable rate. However, if you are mid-way through a fixed-rate deal, early repayment charges may outweigh the savings from switching. A broker can model the numbers for your specific situation.

6. Do green mortgages really offer lower rates?

Some lenders offer reduced rates for properties with high energy efficiency ratings, typically EPC A or B. The discount varies by lender and product. Not all properties qualify, and the range of green products is still relatively limited.

7. How far in advance can I lock in a mortgage rate?

Most lenders allow you to secure a rate up to six months before your current deal expires. Some offer rate locks on new purchase applications that hold the rate for a set period while you find a property.

8. What happens if rates fall after I fix?

If you are on a fixed rate, your payments stay the same for the duration of the deal regardless of what happens in the market. You can only benefit from lower rates once your fixed period ends, unless you pay the early repayment charge to exit early.