First-time buyer joint mortgages: how buying together works

Yes, you can get a joint mortgage as a first-time buyer, and most people do. Two names on the loan, two incomes counted, two deposits combined. For a lot of first-time buyers it's the only realistic way to afford a first home, so it's the normal route rather than the exception.

The bit worth understanding is how it actually works: what two of you can borrow, how you decide who owns what, and the one scenario that catches couples out, which is when one of you has owned a property before. That last one can quietly add thousands to your stamp duty bill, so it's the part we spend most time on with clients.

Can two first-time buyers apply together?

A joint mortgage simply means more than one person is named on the loan. You're both responsible for the repayments, both incomes are used to work out what you can borrow, and both of you appear on the property when it comes to owning it.

It doesn't have to be a couple. Friends buying together, two siblings, a parent and an adult child: lenders see all of these regularly. Most will allow up to four people on a single mortgage, though it's unusual to go beyond two.

There's one term worth knowing: you'll be jointly and severally liable. In plain English, that means you're each responsible for the whole mortgage, not just your half. If one person can't pay their share one month, the lender can look to the other to cover all of it. It sounds heavy, but it's standard, and it's the reason lenders are comfortable lending more to two people than to one.

In my experience most first-time buyers who buy jointly are doing the sensible thing. Two incomes stretch further, the deposit comes together quicker, and the monthly cost is shared. The things to get right are the ownership and the paperwork, and those are easy to sort once you know they exist.

How much can you borrow together?

As a rough guide, lenders will often lend somewhere around four to four-and-a-half times your combined annual income. Some will stretch further depending on your incomes, your profession and how much you're putting down, but that multiple is a sensible starting point for a back-of-the-envelope figure.

Combined is the key word. If two of you each earn £30,000, a lender is looking at £60,000, not £30,000, and that's what makes buying together so much more powerful than going it alone. If there are three or four of you on the mortgage, most lenders base affordability on the two highest incomes rather than adding everyone up.

The multiple is only half the picture, though. Affordability also weighs up your outgoings: existing debts, car finance, credit cards, childcare and how many people depend on your income. Two good salaries with heavy monthly commitments can borrow less than you'd expect, so it's worth getting a realistic figure before you start booking viewings.

Both of your credit histories matter too. A joint application is assessed on both files, so if one of you has a missed payment or a default in the recent past, it can affect the rate you're both offered, or which lenders will consider you. It's better to know that early than to find out at the application stage. You can read the full picture in our first-time buyer guide.

Who owns what: two ways to hold it

Once you're buying together, you have to decide how you own the property. In England and Wales there are two options, and your solicitor will ask which one you want. It's a five-minute decision, but it matters, so it's worth understanding before they ask.

Joint tenants

You own the whole property together, in equal shares. If one of you dies, your share passes automatically to the other, regardless of what a will says. This is the usual choice for married couples and long-term partners who see the home as fully shared.

Tenants in common

You each own a defined share, and those shares don't have to be equal. If one of you puts in a much bigger deposit, you might own it 70/30 to reflect that. Your share passes according to your will rather than automatically to the other owner. This tends to suit friends, family members, or couples who've contributed very different amounts.

When only one of you is a first-time buyer

This is the situation that trips people up, and it's more common than you'd think: one of you has never owned a home, the other has owned before, maybe from a previous relationship or a flat they've since sold. You can absolutely still buy together. Lenders have no problem with a mixed-status couple. But two things change, and both are about tax rather than the mortgage itself.

You lose first-time buyer stamp duty relief

First-time buyer relief only applies if every person buying the property has never owned a home anywhere in the world. If one of you has owned before, neither of you qualifies, and you're taxed as ordinary buyers. Here's what that difference looks like on the current rates (England and Northern Ireland, from 1 April 2025):

First-time buyer relief gives 0% up to £300,000 and 5% on the slice between £300,001 and £500,000. Above £500,000 there's no relief at all. So on a £350,000 home, two qualifying first-time buyers would pay £2,500, while a mixed-status couple would pay £7,500. That's three times as much, purely because of who's on the purchase. You can check the detail on the gov.uk stamp duty reliefs page.

Watch the additional-property surcharge

There's a second trap. If the partner who's owned before still owns that other property when you complete (say they've kept a flat and rented it out), then buying your new home means you'll own two properties between you. That triggers the 5% additional-property surcharge, and it's charged on the whole purchase price, on top of the standard rates. On a £350,000 purchase that's an extra £17,500. If the old property is being sold as part of the move, the surcharge generally doesn't apply.

The workaround: a sole-proprietor arrangement

There's a way to keep the first-time buyer's stamp duty status in some cases: a Joint Borrower Sole Proprietor mortgage. The person who's owned before goes on the mortgage, so their income helps you borrow more, but they're left off the property deeds. That way the first-time buyer is the sole legal owner, which can preserve the relief.

It's a niche product and not every lender offers it, and it needs proper thought about what happens if things change down the line. It won't be right for everyone, but for the right couple it can be the difference of several thousand pounds. It's exactly the kind of thing worth a conversation before you commit to a purchase.

What happens if you split up

Nobody buys a home expecting it to go wrong, and most of the time it doesn't. But because you're both on the mortgage, it's worth knowing where you'd stand. It's the same reason you'd sort out who does the washing up before you move in.

If a relationship or arrangement ends, the mortgage doesn't care. You're both still fully responsible for it until it's dealt with, whatever's happening between you. Broadly, you'd have three routes:

• One buys the other out. The person staying takes on the mortgage in their own name, which means proving to the lender they can afford it alone.
• You sell. The property is sold, the mortgage is repaid, and any remaining equity is split according to how you owned it.
• You carry on paying. Sometimes people keep the mortgage going for a while, but both remain liable, so it needs to be a deliberate choice rather than a default.

This is where the ownership decision from earlier earns its keep. If you're tenants in common with a declaration of trust, the split is already written down and there's nothing to argue about. Sorting that at the start isn't unromantic. It's just sensible, and it means you never have to have a difficult conversation from a standing start.

What the process looks like

A joint application runs almost exactly like a solo one, just with two of everything. A quick sense of the shape of it:

1. Get an Agreement in Principle together. This gives you a realistic budget as a pair and shows estate agents you're serious.
2. Gather both sets of documents. ID, proof of address, payslips or accounts, and bank statements, for each of you.
3. Both credit files are checked. As above, one person's history affects the joint decision, so it's worth both of you knowing where you stand beforehand.
4. Decide how you'll own it. Joint tenants or tenants in common. Your solicitor will ask, so have the answer ready.

None of it is complicated once you can see the whole picture, which is really the point of getting advice: not to make it sound harder than it is, but to spot the stamp duty and ownership questions early, while you've still got time to do something about them.

If you'd rather talk it through first, get in touch with our team — there's no cost to a first conversation.

Last updated: 3 July 2026. Stamp duty figures are for England and Northern Ireland and reflect the rates in force from 1 April 2025; Scotland and Wales have their own systems. This article is general information, not personal advice. Your home may be repossessed if you do not keep up repayments on your mortgage.

Frequently asked questions

Can two first-time buyers get a joint mortgage together?

Yes. Two people buying their first home together is one of the most common types of mortgage there is. Both of you are named on the loan, both incomes count towards affordability, and both are responsible for the repayments. Most lenders let up to four people be on one mortgage.

Do both people need to be first-time buyers for stamp duty relief?

Yes. First-time buyer stamp duty relief only applies if every buyer named on the purchase has never owned a residential property anywhere in the world. If one of you has owned before, neither of you gets the relief and you're taxed as ordinary buyers.

Can I get a joint mortgage if my partner already owns a house?

Yes, lenders are happy to lend to a mixed-status couple. The catch is stamp duty: you lose first-time buyer relief, and if your partner still owns the other property when you complete, a 5% additional-property surcharge can apply to the whole price. A Joint Borrower Sole Proprietor mortgage is sometimes used to keep the first-time buyer as the sole legal owner.

How much can two first-time buyers borrow together?

As a rough guide, lenders often lend somewhere around four to four-and-a-half times your combined annual income, though this varies by lender and your wider circumstances: outgoings, debts, dependants and credit history all feed into it. Pooling two incomes usually means a bigger budget than either of you could reach alone.

What is a Joint Borrower Sole Proprietor mortgage?

It's a mortgage where more than one person is named on the loan and responsible for the repayments, but only one person is named on the property deeds as the owner. It's often used so a parent or partner can boost affordability without becoming a legal owner — which can preserve the sole owner's first-time buyer stamp duty status. Not every lender offers it.