NatWest Family-Backed Mortgage: What is it, who is it for, and are there better alternatives?

NatWest Family-Backed Mortgage: What is it, who is it for, and are there better alternatives?

      

If you have been searching online for a “NatWest family-backed mortgage”, you are probably trying to answer one question: Can your family help you buy a home without gifting huge amounts of money? For many first-time buyers, the answer may be yes. 

NatWest's latest family mortgage scheme has been very popular with borrowers in their mid-30s and is very similar to a Joint Borrower Sole Proprietor mortgage, which replaced the now old-fashioned guarantor mortgage. 

Rising property prices, strict affordability rules and deposit requirements mean many buyers can comfortably afford monthly mortgage payments — but still cannot borrow enough on their own income. That is exactly the problem the new NatWest Family-Backed Mortgage is designed to solve. 

But before applying directly with NatWest, it is important to understand how the mortgage actually works, the risks for parents or family members, and whether another lender may offer a better solution. Also, how using a mortgage broker, like Trinity Financial, could save you time and potentially thousands over the life of the mortgage.

Banks and building societies are offering mortgages of up to six times salary, which means borrowers may not need family help to get on the property ladder. 

The idea behind NatWest's Family-Backed Mortgage and Joint Borrower Sole Proprietor mortgages is that the person helps their adult children or friends secure a large enough mortgage. While avoiding the additional property stamp duty liability if they already own a property anywhere in the world.

Applicants can choose from NatWest's mortgage rates based on their deposit size and income, making them highly competitive. NatWest's rates are priced between 4.5% and 6%.

What is a NatWest Family-Backed Mortgage?

The NatWest Family-Backed Mortgage is a type of Joint Borrower Sole Proprietor (JBSP) mortgage. 

In simple terms, a parent, family member, or even a friend can join the mortgage application. Their income helps increase borrowing power, but the property remains in the buyer’s sole name. That means mum and dad can help you qualify for a bigger mortgage without actually owning part of the property.

NatWest says the product is designed to help buyers “get onto the property ladder sooner or borrow more.” 

How does it work?

Here’s a simple example: A first-time buyer earning £28,000 may only be able to borrow around £124,000 alone. But if a parent earning £45,000 joins the mortgage as a non-owner borrower, borrowing power could potentially rise to around £246,000. 

The family member is legally responsible for the mortgage, has their income assessed, undergoes credit checks, but does not own the property. This is very different from simply gifting a deposit. They are also normally advised to seek individual legal advice so they understand what they are signing up to.

The following criteria apply to NatWest Family-Backed Mortgage applications:

• You, as the main applicant/owner, have a minimum income of £20,000 a year before tax.
• Maximum of two applicants: the owner and the non-owner.
• Both applicants must be between 18 and 75 years old and be UK residents or have the permanent right to reside in the UK.
• You are applying for this mortgage for residential use and do not intend to rent it out.

Why do families use a Family-Backed Mortgage?

1. To increase borrowing power

This is the biggest reason. Many buyers can afford monthly mortgage repayments but fail affordability calculations because lenders cap borrowing based on income multiples and stress testing. Adding a second income can dramatically increase what a buyer can borrow.

2. To buy a home sooner

Some buyers spend years trying to increase their income or save larger deposits while property prices continue rising. A family-backed mortgage can help buyers purchase sooner rather than waiting.

3. To buy in more expensive areas

In places like London and the South East, average salaries often do not support local property prices. Family support may bridge the affordability gap. If buyers can borrow more money, they can potentially buy a house rather than a flat, or get a property with an additional bedroom.

4. To keep ownership simple

Unlike a joint mortgage where parents also own the property, a JBSP arrangement keeps ownership solely with the buyer. That can simplify future tax and ownership issues.

What are the risks?

This is where many buyers and parents need professional advice. The family member is fully liable even though they do not own the property, the supporting family member is still legally responsible for the mortgage debt. If payments are missed:

• Their credit file may be affected

• Lenders may pursue them for repayments

• And their own borrowing ability may be reduced if they want to buy a home, remortgage or take out a personal loan.

It can affect future borrowing

If parents are approaching retirement, lender age limits may restrict the mortgage term. NatWest’s maximum age is typically 75 at the end of the mortgage term. That can shorten the mortgage term and increase monthly payments.

Family relationships can become financially complicated

Many online discussions about JBSP mortgages focus on the long-term risks if relationships change or finances become strained.

That does not mean these mortgages are a bad idea — but everyone involved should fully understand the legal and financial commitment.

Is a NatWest Family-backed Mortgage the same as a guarantor mortgage?

Not exactly. NatWest specifically states that its Family-Backed Mortgage is different from a traditional guarantor mortgage. With older-style guarantor mortgages, the guarantor typically steps in only if payments are missed. With a NatWest JBSP mortgage, both borrowers are jointly responsible from day one. That is a significant distinction.

Are there better alternatives?

Aaron Strutt, product director at Trinity Financial, says: "There may well be better and more competitively priced mortgage options for younger borrowers getting help from the Bank of Mum and Dad. NatWest is not the only lender offering family-assisted mortgages. 

"Depending on your circumstances, another lender or building society may offer higher borrowing limits, better interest rates, longer mortgage terms, more flexible age rules and lower deposit requirements. Some lenders are also more flexible with self-employed income, bonus income, family structures, or gifted deposits."

Other banks and building societies offering family support mortgages

Different lenders structure these products in different ways.

Some examples include:

• Barclays Springboard Mortgages

• Skipton Track Record Mortgages

• Halifax £5k Deposit Mortgage

• Accord Mortgages

• Nationwide Helping Hand

• Generation Home income booster products

Some lenders require family savings as security and others use joint borrower structures. Some may allow higher income multiples than NatWest and this is why “best lender” depends entirely on your circumstances.

Could another lender offer a better deal than NatWest?

It is possible. Many buyers assume that if NatWest approved them, that must be the best or the only option. But mortgage criteria vary massively between lenders. One lender may: lend £50,000 more, accept overtime or bonus income, ignore certain commitments, allow older supporting applicants or offer lower monthly payments.

Another lender may decline the case entirely. A good mortgage broker can compare these options across banks and building societies rather than relying on a single lender’s criteria.

Should you use a mortgage broker for a NatWest Family-Backed Mortgage?

In most cases, yes. Family-backed mortgages are more complex than standard residential mortgages.

A broker can help assess whether a JBSP mortgage is the best route, whether NatWest is the strongest lender, whether another lender could offer more borrowing and whether there are risks you have not considered. A broker can also help structure the application correctly.

That matters because affordability calculations, income evidence and supporting borrower details can significantly impact approval chances. Some borrowers applying directly online may not realise a different lender would have offered a much stronger solution.

What will a good broker compare?

A good broker should compare interest rates, arrangement fees, maximum borrowing amounts, affordability models, lender age limits, overpayment flexibility, early repayment charges, and long-term suitability. The cheapest initial rate is not always the most suitable option.

Is a NatWest Family-Backed Mortgage right for you?

It can be an excellent solution if you can comfortably afford repayments and your income is the only barrier. Your family understands the risks, and everyone takes proper legal advice. But it is not suitable for every family, as in some cases a gifted deposit may work better, another lender may lend more or waiting and improving affordability may be safer. The key is understanding all available options before committing.

Speak to a Trinity Financial adviser today

The mortgage market moves fast — and the right advice can make a significant difference to the rate and deal you secure. Get in touch with our team to discuss your options.

Call Trinity Financial on 020 7016 0790 to secure a family-backed fixed or tracker rate mortgage, book a consultation, or use our appointment calendar

The information contained within was correct at the time of publication but is subject to change. It is for general information purposes and is not advice.

Your mortgage is secured on your property. Your property may be repossessed if you do not keep up repayments on your mortgage

 

 

FAQs

What is the NatWest Family-Backed Mortgage?
It is a family-assisted mortgage where a parent, family member or friend can be added to the mortgage application to boost affordability, while the buyer remains the sole owner of the property.

Is the supporting family member responsible for the mortgage?
Yes. The supporting borrower is legally responsible for the mortgage even though they do not own the property. Missed payments could affect their credit file and future borrowing ability.

Could another lender be better than NatWest?
Possibly. Some lenders may offer higher borrowing, better rates, longer terms or more flexible age and income rules, so it is worth comparing NatWest with other Joint Borrower Sole Proprietor and family mortgage options.