No-Deposit and 100% Mortgages: Are They Real in 2026?

No deposit mortgages sound almost too good to be true, and for most buyers that instinct is half right. They genuinely exist in the UK in 2026, but the handful of products that let you borrow the full purchase price almost always come with a catch — usually a family member putting their savings or home on the line. This guide explains, in plain English, what a 100% mortgage actually is, the different ways lenders make buying a house with no deposit possible, why a deposit matters so much in the first place, and the realistic alternatives if your savings are thin.

The short version: yes, they are real, but a true no-strings 100% mortgage for an ordinary first-time buyer with no family help is rare. Understanding why helps you spot a sensible product from a risky one.

What is a 100% mortgage or no-deposit mortgage?

A 100% mortgage is a loan for the entire value of the property, meaning you put in no deposit of your own. Because the loan equals the price, the loan-to-value (LTV) is 100%. Loan-to-value is simply the size of the mortgage as a percentage of the property's value — so if you borrow £200,000 to buy a £200,000 home, your LTV is 100%. Most ordinary mortgages sit at 75% to 95% LTV, with the rest covered by your deposit.

The phrases “no deposit mortgage” and “100% mortgage” are used interchangeably, but in practice the modern products that allow you to buy with nothing down fall into a few distinct types. Some genuinely require no deposit from anyone; most lean on a family member's money or property as security. Knowing which is which is the whole game.

The main types you will come across

• Guarantor mortgages — a parent or close relative legally agrees to cover your repayments if you cannot. Their own home or savings can be used as security.
• Family-assisted (springboard or deposit-boost) mortgages — a relative places savings (often 10% of the price) into a linked account, or a charge is put against their property, as security rather than a gift you spend.
• Track-record / rental-based products — a small number of lenders have offered deposit-free deals to renters who can prove a history of paying rent on time, on the basis that they can clearly afford the monthly cost.
• Concessionary purchase — buying a property (often from family or a landlord) below market value, where the discount effectively stands in for your deposit.

Before going further, it helps to see how a deposit changes your buying power. Our House Deposit Calculator shows how different deposit sizes affect what you can buy and the LTV you would need — useful context for everything that follows.

How guarantor and springboard mortgages work

Most no-deposit lending in the UK runs through family help, because it gives the lender something to fall back on without you having cash of your own.

Guarantor mortgages

With a guarantor mortgage, a relative (usually a parent) formally promises to make your repayments if you fall behind. The guarantor often has to secure that promise against their own savings or, in some cases, their home. The benefit is that you may be able to borrow up to 100% of the price with no deposit. The serious downside is that your guarantor is fully on the hook: if you default and the property is repossessed and sold for less than the loan, their money — or even their home — can be at risk. It is a genuine commitment, not a formality.

Springboard and deposit-boost mortgages

A springboard mortgage (also marketed as a deposit-boost or family-boost product) works slightly differently. Instead of acting as an open-ended guarantor, a family member deposits a fixed sum — commonly 10% of the purchase price — into a savings account linked to your mortgage, where it is held as security for a set number of years. You make the repayments; if you keep up, the relative gets their money back (often with interest) at the end of the term. If you fall seriously behind, the lender can draw on those savings. This lets you buy with effectively no deposit of your own while limiting the family member's exposure to a known amount rather than their whole home.

Rental track-record products

A small number of lenders have, at times, offered no-deposit deals aimed at long-term renters. The logic is straightforward: if you have paid £1,200 a month in rent reliably for years, you have proven you can handle a similar mortgage payment. These products typically require a clean credit history, evidence of consistent rent payments, and often cap the loan size relative to your income. They come and go with the market, so availability is patchy — treat them as worth investigating rather than something you can count on.

Why lenders usually want a deposit

To judge whether a no-deposit deal is right for you, it helps to understand why deposits exist at all. A deposit protects the lender as much as you, and the reason comes down to one phrase: negative equity.

If you borrow 100% of a property's value and house prices fall even slightly, you immediately owe more than the home is worth. With a 10% deposit, prices would have to drop more than 10% before you hit that point — the deposit is a cushion. Lenders price this risk in:

• Higher LTV means higher risk, so 100% and 95% mortgages almost always carry higher interest rates than 75% or 60% deals.
• Negative equity traps you. You cannot easily remortgage to a better rate or sell without finding cash to cover the shortfall.
• Repossession risk. If a lender has to repossess and sell into a falling market, a deposit is what stops them making a loss — which is exactly why guarantor and springboard products substitute family security for that missing cushion.

Comparing your options

Worked example: the negative-equity risk

Let us make the danger concrete. Sam buys a flat for £200,000 with a 100% mortgage — no deposit, the full £200,000 borrowed, secured by a springboard arrangement using his parents' savings.

1. Day one. Sam owes £200,000 on a home worth £200,000. His equity is £0.
2. Prices fall 8%. A year later the flat is worth £184,000, but Sam still owes roughly £198,000. He is now around £14,000 in negative equity.
3. He wants to remortgage. His introductory rate ends, but no lender will offer a new deal because the loan exceeds the property's value. Sam is stuck on his lender's standard variable rate, which is higher.
4. He needs to sell. If Sam had to move, selling at £184,000 would not clear the £198,000 debt — he would have to find £14,000 from somewhere just to walk away.

Now compare a buyer with a 10% deposit on the same flat: they borrowed £180,000, so an 8% price drop to £184,000 still leaves them with positive equity and the freedom to remortgage or sell. That cushion is the entire reason deposits matter. Check how the maths plays out for your own budget with the House Deposit Calculator, and use How Much Can I Borrow to see what a realistic deposit unlocks.

Realistic alternatives for low-deposit buyers

If you do not have family able to act as guarantor, a no-deposit mortgage is often out of reach — but a small deposit goes a long way. Here are the routes most low-deposit buyers actually use.

A 5% deposit (95% mortgage)

The most common path. A low deposit mortgage at 95% LTV means you need just 5% of the price — £10,000 on a £200,000 home. Rates are higher than for bigger deposits, but a 95% mortgage is far more widely available than a true 100% deal and does not require anyone to put their home at risk.

Lifetime ISA bonus

A Lifetime ISA lets eligible 18–39-year-olds save towards a first home and receive a 25% government bonus on contributions (up to £4,000 a year, so up to £1,000 of free money annually) for a property up to £450,000. Used over a few years, it can build a meaningful deposit. Check the current rules at gov.uk before relying on it, as eligibility and withdrawal conditions apply.

Shared Ownership

With Shared Ownership you buy a share of a property (typically 25%–75%) and pay rent on the rest. Because you only need a deposit on the share you are buying, the cash required is much smaller. You can usually buy further shares later (“staircasing”). It is not deposit-free, but it dramatically lowers the entry cost.

Gifted deposits

If a relative is willing to give rather than lend, a gifted deposit can turn a no-deposit situation into a comfortable one. The money is a genuine gift with no expectation of repayment; lenders will ask for a letter confirming this and may run anti-money-laundering checks on its source. A gifted deposit lets you access mainstream, lower-LTV mortgages and far better rates than any 100% product.

For a wider view of the whole buying journey, browse our mortgage guides. It is also worth reading how a mortgage in principle works before you start making offers, whichever route you choose.

Common mistakes

• Assuming 100% means no commitment from anyone. Most no-deposit deals shift the risk onto a family member. Be sure they understand exactly what they are signing.
• Ignoring the higher rate. The convenience of no deposit is paid for in a higher interest rate over the whole term — often thousands of pounds more.
• Underestimating negative equity. Buying at 100% LTV leaves no margin if prices dip. Think about how likely you are to need to move or remortgage soon.
• Forgetting the other costs. Even with no deposit you still face legal fees, surveys, moving costs and possibly Stamp Duty Land Tax. First-time buyers in England get relief up to £300,000, but check what applies in your nation.
• Stretching affordability to the limit. No deposit plus the maximum loan you can get is a fragile position if rates rise or your income dips.
• Not comparing alternatives. A 5% deposit, Lifetime ISA bonus or gifted deposit will usually beat a 100% product on cost and flexibility — do the comparison before committing.

FAQs

Can I really buy a house with no deposit in 2026?

Yes, it is possible, but almost always through a guarantor or springboard arrangement where a family member secures the loan with their savings or home. True no-strings 100% mortgages for buyers with no family help are rare. A 5% deposit is far more widely available.

What is the difference between a guarantor and a springboard mortgage?

A guarantor agrees to cover your repayments if you cannot, often securing that against their home or savings with open-ended liability. A springboard (or deposit-boost) mortgage instead locks a fixed sum of a relative's savings — usually 10% — as security for a set period, returned if you keep up payments. Springboard limits the family member's exposure to a known amount.

Why do 100% mortgages have higher interest rates?

Because they carry more risk for the lender. With no deposit there is no equity cushion, so even a small fall in house prices can push you into negative equity. Lenders charge a higher rate to offset that risk, which means a 100% mortgage usually costs more over its life than a deal with a deposit.

Is a 5% deposit better than a no-deposit mortgage?

For most people, yes. A 95% mortgage is widely available, does not put a relative's home at risk, gives you a small equity cushion against price falls, and usually comes with better rates than a 100% product. Even a modest deposit improves your options significantly.

Does the government help first-time buyers with deposits?

Yes. The Lifetime ISA adds a 25% bonus to savings towards a first home (up to £1,000 a year), and Shared Ownership lets you buy a share of a property with a smaller deposit. Eligibility rules apply, so check the current details on gov.uk and MoneyHelper.

Sources

• MoneyHelper — Types of mortgage, including guarantor and family deals
• GOV.UK — Lifetime ISA
• GOV.UK — Shared Ownership homes

This guide is general information, not personal financial advice. For your own circumstances, speak to a qualified adviser.