How to Compare Two Mortgage Offers as a First-Time Buyer

If you have more than one mortgage option available, knowing how to compare mortgage offers can help you understand the real differences between them. The lowest interest rate is important, but it does not automatically mean that mortgage will cost less overall or suit your circumstances better.

First-time buyers may need to compare interest rates, product fees, monthly repayments, initial deal periods, incentives, early repayment charges and what happens when the introductory deal ends.

The key is to compare like with like and look at the overall cost and features rather than focusing on a single headline number.

What Should You Compare Between Two Mortgage Offers?

Start with the interest rate, monthly repayment, fees, mortgage term and initial deal period. You should then consider any incentives or restrictions attached to each product.

Two mortgages for exactly the same loan amount can produce different costs because their rates and fees are structured differently.

A useful comparison should normally consider the following:

• Interest rate
• Monthly repayment
• Product or arrangement fee
• Initial fixed or discounted period
• Overall mortgage term
• Early repayment charges
• Overpayment rules
• Cashback or other incentives
• Valuation or legal benefits where applicable
• Rate payable after the initial deal ends

Should You Choose the Mortgage With the Lowest Interest Rate?

Not necessarily. A lower rate can reduce the interest charged, but fees can change which mortgage costs less over the period you are comparing.

For example, one mortgage could have a slightly lower rate but a substantial product fee. Another could have a slightly higher rate but no product fee.

Depending on the amount you are borrowing and how long you expect to keep the deal, the higher-rate product could potentially cost less over the initial period.

This is why comparing mortgage offers purely by headline rate can give an incomplete picture.

How Do Mortgage Product Fees Affect the Comparison?

Product fees can have a significant effect on the real cost of a mortgage. These are sometimes called arrangement, booking or completion fees, depending on the lender and product.

Suppose Mortgage A has a lower interest rate but charges a £999 product fee, while Mortgage B has a slightly higher rate with no product fee. The rate alone would make Mortgage A appear cheaper, but the fee needs to be included before you can make a meaningful comparison.

This can be particularly relevant when borrowing a smaller amount because a fixed fee represents a larger proportion of the mortgage.

Our guide on how much a £50,000 mortgage costs per month provides more detail on how rates and mortgage terms can affect monthly repayments on a smaller mortgage.

Should You Add a Mortgage Fee to the Loan?

Some lenders may allow certain mortgage fees to be added to the loan rather than paid upfront. Doing this can reduce the amount of cash needed initially, but it can increase the amount borrowed.

If interest is charged on the added fee, you could repay more than the original fee over the mortgage term.

When comparing two products, check whether the quoted borrowing figures treat fees in the same way. Comparing one mortgage with a fee added to the balance against another where the fee is paid upfront can otherwise distort the comparison.

How Do You Compare Monthly Mortgage Repayments?

Monthly repayments show the immediate impact on your household budget. However, they should be considered alongside the interest rate, fees and mortgage term.

A lower monthly payment does not always mean a cheaper mortgage. Extending the mortgage term, for example, can reduce the monthly repayment while increasing the amount of interest potentially paid over the full term.

First-time buyers should therefore consider both affordability today and the longer-term cost of borrowing.

How Does the Mortgage Term Change the Cost?

The mortgage term is the length of time over which the loan is scheduled to be repaid. A longer term generally reduces the required monthly repayment because the balance is spread across more payments.

The trade-off is that interest may be charged for longer.

If you are comparing two offers, make sure they are based on the same mortgage term before comparing the monthly repayments. A mortgage calculated over 35 years will naturally produce a different monthly payment from the same borrowing calculated over 25 years.

How Can First-Time Buyers Compare Mortgage Offers Fairly?

To compare mortgage offers fairly, use the same loan amount, deposit, property value and mortgage term wherever possible. You can then examine the differences created by the products themselves.

If one quotation assumes a different deposit or term, the comparison becomes less useful because several variables are changing at once.

Deposit size can also affect which products are available because mortgages are commonly priced according to loan-to-value bands.

What is loan-to-value?

Loan-to-value, often shortened to LTV, describes the mortgage as a percentage of the property’s value.

If a property costs £200,000 and you have a £20,000 deposit, you would need a £180,000 mortgage. That represents a 90% LTV.

Different LTV bands can have different rates and product choices, so two first-time buyers purchasing similarly priced properties may not necessarily receive the same options if their deposits are different.

What Is the Initial Mortgage Deal Period?

The initial deal period is the period during which a particular rate or pricing arrangement applies. A fixed-rate mortgage, for example, keeps the interest rate fixed for the agreed initial period.

When comparing mortgages with different initial periods, remember that you are not comparing identical products.

A shorter fixed period may mean reviewing your mortgage arrangements sooner. A longer fixed period may provide greater certainty for longer but can also have different rates, fees and early repayment conditions.

Should First-Time Buyers Compare APRC?

APRC, or Annual Percentage Rate of Charge, is designed to provide a broader indication of the cost of a mortgage using prescribed assumptions.

It can be useful when reviewing mortgage information, but it should not be considered in isolation.

The calculation can assume that you remain with the mortgage for its full term, including any later variable rate. In practice, some borrowers review their mortgage when an initial deal finishes.

APRC can therefore be one comparison measure alongside the initial rate, fees, monthly repayments and product features.

What Happens When the Initial Mortgage Deal Ends?

Check what rate applies after the initial deal period. Unless another mortgage arrangement is made, borrowers will generally move onto the rate specified by their lender and mortgage contract.

This later rate can be substantially different from the introductory rate, so it is worth understanding before selecting a product.

Mortgage rates can change over time, meaning it is impossible to know precisely what alternative products will be available when your initial deal finishes.

What Are Early Repayment Charges?

Early repayment charges are fees that may apply if you repay all or part of a mortgage, or move away from a product, during a specified period.

The exact rules vary by mortgage product.

If there is a reasonable possibility that you could move home, repay a large amount of the mortgage or need to change your mortgage during the initial deal, these conditions can be an important part of the comparison.

Can You Make Mortgage Overpayments?

Many mortgages permit some level of overpayment without an early repayment charge, although the limits and conditions vary.

Overpaying can reduce the outstanding balance and potentially reduce the interest paid, but first-time buyers should check the exact product rules rather than assuming every mortgage provides the same flexibility.

If one of the offers you are comparing has more flexible overpayment conditions, that feature may be relevant even if its headline rate is not the lowest.

Do Cashback and Free Valuations Make a Mortgage Better?

Cashback, free valuations and other incentives can reduce some of the initial costs associated with buying your first property. However, they should be included in the wider cost comparison rather than treated as a reason to choose a mortgage on their own.

For example, a cashback product could have a higher interest rate than an alternative. The value of the cashback would need to be weighed against any difference in repayments and fees.

First-time buyers often have several costs to manage at once, so incentives can still be useful where the overall mortgage remains suitable.

Why Does Your Deposit Matter When Comparing Mortgage Offers?

Your deposit affects the amount you need to borrow and your loan-to-value. This can influence both mortgage availability and pricing.

If you are close to another LTV band, a modest increase in your deposit could potentially change the products available. This is lender-dependent and should not be assumed without checking the relevant criteria.

First-time buyers should also be cautious about putting every available pound into the deposit without considering conveyancing, surveys, moving expenses and other purchase costs.

Does Your Income Affect Which Mortgage Offer Is Better?

Yes. Affordability is personal, so the mortgage with the lowest overall cost is not automatically appropriate for every borrower.

A lender will assess income and financial commitments to determine what it is prepared to lend. Buyers also need to consider whether repayments are manageable within their own household budget.

This becomes particularly important for buyers relying on one salary. Our guide on getting a mortgage on one income explains how lenders assess single applicants and their affordability.

What If You Are Self-Employed or Have Variable Income?

Applicants with self-employed, freelance, contractor or variable income may find that different lenders calculate affordability differently.

This means two mortgage options cannot always be compared purely on product price. One lender may accept more of a particular income source than another, potentially affecting the amount it is prepared to lend.

Self-employed first-time buyers may also need additional evidence such as tax calculations, tax year overviews, business accounts or bank statements. We cover these considerations in our guide to first-time buyer mortgages for self-employed applicants.

Does Credit History Affect Your Mortgage Options?

Credit history can affect lender choice, interest rates, deposit requirements and the products available. Criteria vary considerably between lenders.

Previous missed payments, defaults, CCJs, bankruptcy or debt arrangements do not necessarily mean a mortgage is impossible, but they can change the range of options available.

For more complex credit circumstances, our guides on mortgages after bankruptcy and mortgages with a Debt Management Plan explain some of the factors lenders may consider.

Why Might the Cheapest Mortgage Not Be the Most Suitable?

Price matters, but mortgage features and individual circumstances matter too. A product that costs slightly less may have restrictions that are important to you, while another may offer flexibility that you value.

For example, differences could include early repayment charges, overpayment allowances, portability conditions or the length of the initial rate period.

Rather than asking only which mortgage has the lowest rate, a more useful question is what each mortgage costs over the relevant period and what conditions come with it.

What Should You Check Before Choosing Between Two Mortgage Offers?

Make sure you understand the interest rate, monthly repayment, mortgage term, product fees, initial deal length, early repayment charges, overpayment rules and any incentives.

You should also check that the illustrations you are comparing use the same mortgage amount and term.

Finally, consider whether the repayments remain manageable alongside your normal household expenses. Lenders may examine your bank statements as part of their affordability and underwriting checks, particularly where additional verification is required. Our guide on what mortgage lenders look for on bank statements explains this process in more detail.

How Do You Make the Final Comparison?

A practical approach is to put the two offers side by side and compare the same features in the same order: borrowing amount, term, initial rate, monthly repayment, initial deal period, product fees, incentives and restrictions.

Then consider the cost over the period that is relevant to the comparison rather than simply looking at the first monthly payment or headline rate.

Mortgage products can be complicated, and the cheapest-looking option is not necessarily the most appropriate for an individual’s circumstances. If you want personalised advice about which mortgage is suitable, speaking to a regulated mortgage adviser may help.

This guide provides general information only. Personalised mortgage advice should always come from a regulated mortgage adviser.