Joint mortgage first time buyer the complete guide

A joint mortgage first time buyer application works in almost the same way as a standard mortgage application. The main difference is that the lender looks at the combined income, outgoings, and credit history of everyone named on the application, rather than just one person's.

Every applicant is jointly and individually liable for the full mortgage debt, not just an equal share of it. That means if your co-applicant stops paying their part, the lender can still pursue you for the whole amount. Your home may be repossessed if you do not keep up repayments on your mortgage or any other debt secured on it.

You don't need to be a couple to apply together. Friends, siblings, and parents buying with children all use joint mortgages, and for many first time buyers, applying jointly is what makes homeownership affordable in the first place.

To qualify as a first time buyer in the UK, you must never have owned a residential property, anywhere in the world, either on your own or jointly with someone else. This includes properties you inherited or were gifted, even if you never lived in them.

• You must be buying the property as your only or main home, not as an investment
• Some lenders will still treat you as a first time buyer if it's been several years since you last owned a property, though this varies by lender
• On a joint application, every applicant must meet the first time buyer definition for the purchase to qualify for first time buyer stamp duty relief
• If even one applicant has owned before, the relief is lost for the whole purchase - see what happens if only one of you is a first time buyer

If you'd like a broader introduction to how first time buyer mortgages work before focusing on joint applications, our first time buyer mortgage guide covers the basics.

Lenders typically calculate joint mortgage affordability by combining both applicants' gross annual income and multiplying it by a set figure, usually between 4 and 4.5 times combined income. A smaller number of specialist lenders will stretch to around 5.5 times income for applicants who meet stricter criteria, such as certain professions or higher earnings.

Lenders then test whether you could still afford repayments if interest rates rose, checking your outgoings against a higher rate than the one you'd actually pay. This affordability stress test can reduce your maximum borrowing below the headline income multiple, particularly if you have other debts, dependants, or a high cost of living in your area.

These figures are illustrative only - your actual maximum will depend on your outgoings, credit history, number of dependants, and the specific lender's affordability calculation. An advisor can talk you through which lenders are likely to offer the most for your combined circumstances.

Most lenders ask for a minimum deposit of 5% of the property's value on a joint first time buyer mortgage, though putting down 10 to 15% or more typically opens up a wider choice of deals. The lower your deposit, the higher the proportion of the property's value you're borrowing, known as the loan to value (LTV), which usually means less favourable terms.

Buying jointly makes it easier to reach a larger deposit, since you can pool savings from more than one person. If you're both saving into a Lifetime ISA, you can each receive a government bonus on your contributions, which adds up faster than saving alone.

In England and Northern Ireland, first time buyers benefit from stamp duty relief, but on a joint mortgage, every applicant must meet the first time buyer definition for the relief to apply. If even one of you has owned a property before, the relief is lost and standard stamp duty rates apply to the entire purchase price, not just one person's share.

If your purchase price is above £500,000, or if one applicant isn't a first time buyer, you'll pay stamp duty at the standard residential rates instead. Scotland and Wales run separate systems (Land and Buildings Transaction Tax and Land Transaction Tax) with their own thresholds and first time buyer rules, so check the relevant guidance if you're buying outside England or Northern Ireland. For the latest thresholds, see HMRC's stamp duty land tax guidance, or read our dedicated stamp duty for first time buyers guide.

How you own the property together is a legal decision, separate from the mortgage itself, and it's worth thinking about before you exchange contracts. There are two main options in England and Wales.

If you choose tenants in common, particularly where contributions are unequal, it's worth asking a solicitor to draw up a deed of trust setting out exactly what happens to each person's share if the property is sold. This becomes especially important if you later separate, which we cover in more detail below.

If one of you has owned a property before, anywhere in the world, first time buyer stamp duty relief is lost for the whole purchase. It's all or nothing, so it doesn't matter that the other applicant genuinely is a first time buyer - standard stamp duty rates apply to the full price.

There are a couple of ways couples and families in this position often structure things:

• Joint Borrower Sole Proprietor (JBSP) mortgage: the experienced owner's income helps boost affordability, but only the first time buyer goes on the property's title deed. Because they're not a legal owner, the first time buyer keeps their first time buyer status and the stamp duty relief that comes with it.
• The first time buyer buys alone with a gifted deposit: the partner who has owned before gifts money towards the deposit instead of going on the mortgage or title. Lenders have specific rules about gifted deposits, so it's worth checking these early.

Not every lender offers JBSP mortgages, and criteria vary considerably between those that do. An advisor who compares a wide range of lenders can help identify which ones are likely to work for your situation.

Yes, though it can be harder to arrange. On a joint application, lenders assess both applicants' credit profiles, and one person's poor credit history can affect the whole application, even if the other applicant has a strong record.

Issues that commonly cause problems include county court judgments, defaults, missed payments in the last few years, and individual voluntary arrangements. Specialist lenders, rather than high-street banks, are often more willing to consider applications like these, though they may ask for a larger deposit in return.

An advisor who compares a wide range of lenders can help identify which lenders are likely to consider your application case by case. For more detail, see our bad credit mortgage options guide. If you're worried about your wider financial situation, impartial guidance is available from MoneyHelper on 0800 138 7777.

Separating when you own a property jointly is one of the most common worries we hear from joint first time buyers, and it's a scenario worth thinking through before you buy, not just if it happens. There are generally a few routes forward.

• One person buys the other out by remortgaging the property into their sole name - the lender will need to confirm the remaining owner can afford the mortgage alone
• The property is sold and the mortgage repaid from the proceeds, with any remaining equity split according to your ownership structure
• Both parties stay on the mortgage by agreement, though this is unusual and generally not recommended given the ongoing joint liability
• A deed of trust set up at the time of purchase can make dividing the proceeds much clearer if you separate later

Your home may be repossessed if you do not keep up repayments on your mortgage or any other debt secured on it, so if a separation affects your ability to keep up payments, it's worth speaking to your lender and an advisor as early as possible. If you'd like to explore moving to a sole mortgage, our remortgage to sole name guide explains how the process works.

Joint applications bring extra moving parts - two incomes, two credit files, sometimes mixed first time buyer status, and decisions about how you'll own the property. An advisor can help you make sense of all of it before you commit to a lender.

We compare a wide range of lenders, including specialists who consider JBSP arrangements, mixed first time buyer status, and adverse credit, so you're not limited to whichever lender you happen to walk into. You can check any advisor's authorisation on the Financial Conduct Authority Register before you speak to them.