Choose a deal you can live with, not just a low headline rate
A mortgage deal only becomes a realistic option when it fits your deposit, income, property and budget. Compare the cost over the period you expect to keep it, the fees and the flexibility as well as the advertised interest rate.
This guide helps you ask better questions before an application. It does not show live products or predict what a lender will offer you.
How do you compare first-time buyer mortgage deals?
Start with products that could suit your circumstances, then compare the same loan amount, deposit and mortgage term. Look at payments and fees over the introductory deal period, what could happen afterwards, and any charge for changing plans early. Use the lender’s illustration to check the details before committing.
The lowest initial rate may not give you the lowest overall cost. A product fee, cashback, repayment term or early repayment charge can change the picture. The Annual Percentage Rate of Charge (APRC) is useful context, but it assumes you keep the mortgage for its full term; it is not a substitute for comparing the period you expect to stay on a particular deal.
Four facts to establish before looking at rates
Your deposit and loan-to-value
Work out how much you may need to borrow against the proposed purchase price. A different loan-to-value band may change the products you can consider, but keeping cash for purchase costs and emergencies matters too. See Count Ready’s 5% deposit guide if your deposit is small.
Your monthly budget
Allow for council tax, insurance, utilities, travel and property upkeep alongside the mortgage. Consider whether payments would remain manageable after the initial deal or if your income changed. A lender’s maximum borrowing figure is not a personal spending target.
Your income and credit record
Employment type, regular commitments and information on your credit files can affect which applications are sensible. A consumer credit score is not a universal lender pass mark. If a past credit event needs explaining, use the distinct first-time buyer bad-credit guide before making repeated applications.
The property and purchase
A lender will also assess the home and the transaction. A flat, unusual construction, shared ownership or gifted deposit can call for additional checks. Tell an adviser what you know about the property early, rather than comparing rates that may not apply to it.
Deposit, affordability, property and credit checks differ by lender and product. This is a preparation list, not lender criteria.
What to put beside each mortgage deal
Rate and deal length
Record the initial rate, whether it is fixed or variable, when that period ends and what rate would follow under the current terms. A fixed rate gives payment certainty for its fixed period; a variable rate can move. Neither type is automatically better for every buyer.
Fees and incentives
Check product, booking, valuation and any other lender charges, plus broker fees and any cashback or contribution. Ask whether a fee is payable upfront or added to the loan. If it is added, you may pay interest on it.
Payments and total cost
Compare the monthly payment using the same borrowing amount and term. Then compare the total paid during the deal period, including relevant fees and incentives. A longer mortgage term can reduce the monthly payment while increasing the interest paid over time.
Room to change plans
Check overpayment terms, early repayment charges and whether you could ask to port the deal if you move. Porting is subject to the lender’s assessment; it is not a promise that the mortgage can move to a new home.
A simple sequence before you apply
- Decide what matters to you. Payment certainty, lower upfront cost, flexibility to move or overpay, and keeping enough savings are different priorities. Put yours in order.
- Use the same assumptions. Keep the purchase price, deposit, borrowing amount and mortgage term consistent when comparing illustrations. If one option changes a term or adds a fee to the loan, note that clearly.
- Check availability before relying on a result. An online comparison can be a useful starting point, but product availability, lender criteria and rates can change. An agreement in principle is not a formal mortgage offer.
- Read the conditions. Ask how long the rate is available, whether there is an early repayment charge, what happens after the initial period and whether the property or deposit source needs extra evidence.
If you want to compare a wider range of borrowing situations, use the separate general mortgage comparison guide. This page is specifically about a first home purchase.
See how clients describe the advice
Comparing mortgages involves more than a list of rates. Check what clients say about explanations, communication and support through the application, rather than relying on a selected website quote.
Reviews reflect individual experiences. They do not establish whether a particular deal is available or suitable for you.
Other first-time buyer decisions
How much might you borrow?
The first-time buyer mortgage service covers the overall route and adviser support. Use the affordability calculator for an initial estimate, then discuss the figures and lender assessment. A calculator result is not an offer.
Could a scheme help?
Help with buying, shared ownership and savings products have separate eligibility rules and can differ across the UK. Check the current government schemes guide rather than assuming a scheme applies to your purchase.
First-time buyer mortgage deals: FAQs
Is the lowest interest rate the cheapest mortgage?
Not necessarily. Fees, incentives, deal length and the period you keep the mortgage can change the total cost. Compare like-for-like illustrations and work out the cost over the period relevant to your plans.
What does APRC tell me?
The Annual Percentage Rate of Charge expresses the mortgage’s full-term cost as an annual percentage under stated assumptions. It helps compare offers, but may not reflect your cost if you change deals after an introductory period. Read the underlying payments and fees too.
Does a larger deposit always get a better deal?
A larger deposit can move you into a different loan-to-value band and may widen the options, but no rate or approval follows automatically. Do not leave yourself without money for purchase costs and a realistic buffer solely to reach a band.
Should I choose a fixed or tracker rate?
That depends on how much payment certainty you need, the actual product terms and your ability to manage a rise in repayments. A tracker can move with its reference rate; a fixed rate holds the agreed rate for its fixed period. Compare the full terms, not a prediction about future rates.
Can I negotiate an advertised mortgage rate?
Do not assume a lender will change a published product rate for an individual application. You can ask whether another suitable product, fee option or newly available rate should be considered before proceeding. Any recommendation still depends on your circumstances and the lender’s terms.
Does an agreement in principle guarantee a deal?
No. It is an initial indication based on information available at the time. A full application, credit assessment and property checks still follow. Ask whether the agreement in principle involves a soft or hard credit search before requesting one.
Bring your comparison questions to an adviser
Tell us your approximate purchase price, deposit, income type and whether you have found a property. If you have shortlisted products, ask us to explain the costs and conditions that matter for your plans. We can outline the next step and confirm any fee before chargeable work; we cannot promise a rate or acceptance.
Please do not send identity documents, bank details or a full credit report in an initial message. Agree a secure way to share documents if they are needed.
Read the adviser information and terms of business. Mortgage availability and suitability depend on individual assessment and lender criteria.
How this comparison guide was checked
- MoneyHelper: mortgage interest-rate options explains fixed and variable deals, APRC, fees and early repayment charges.
- MoneyHelper: first-time buyer money tips covers budgeting, wider purchase costs and using comparison sites as a starting point.
- FCA Handbook: European Standardised Information Sheet sets out the illustration’s mortgage cost, APRC and conditions fields.
Sources reviewed 1 October 2026. This is general UK guidance, not live mortgage pricing or personal advice. Rates, fees, criteria and scheme rules can change and must be checked for your own application.