Bank of mum & dad (first-time buyers)

For many first-time buyers, getting a mortgage is only part of the challenge—raising the deposit can be the bigger hurdle. That’s where “Bank of Mum & Dad” arrangements come in: contributions from family (or sometimes close friends) that help you bridge the gap.

This guide explains the main ways these arrangements are used, how they can affect the mortgage process, and the risks that both the buyer and the helping party should understand.

What “Bank of Mum & Dad” usually means

In practice, the phrase can cover several different approaches, including:

• Gifted deposits: money given to the buyer with no expectation of repayment.
• Family-linked mortgage structures: specialist mortgage formats where a relative supports affordability and/or deposit funding in a structured way.
• Savings-account “springboard” models: where a helper’s funds are ring-fenced to support the purchase.

Although the intention is often to help a loved one buy sooner, the structure matters—because lenders treat different arrangements differently when assessing affordability, deposit sourcing, and legal responsibility.

Gifted deposits: the most common starting point

A gifted deposit is exactly what it sounds like: the buyer receives funds from a family member (or sometimes another person) to use as part of the deposit.

Key practical points:

• It must be genuinely a gift in the way the lender requires (i.e., no repayment expectation).
• Evidence is usually required: lenders typically want clear documentation showing the money is a gift.
• Deposit sourcing rules still apply: even when the funds are gifted, the lender will still want to understand where the money came from and that it meets their requirements.

For first-time buyers, gifted deposits can be a straightforward way to reduce the amount of savings needed—provided the arrangement is set up correctly from the outset.

Specialist family mortgage structures

When a gifted deposit alone doesn’t solve the affordability problem, some first-time buyers look at specialist family mortgage formats. Two commonly discussed examples are JBSP-style mortgages and family springboard arrangements.

1) JBSP-style (Joint Borrower, Sole Proprietor) mortgages

A JBSP-style mortgage is designed to help a borrower with a lower income access a mortgage by bringing in additional income from a supporting relative.

How the structure typically works (varies by lender/product):

• The supporting person’s income is used to help meet the lender’s affordability assessment.
• The supporting person is often not added to the property title (so they don’t share in ownership in the same way as a co-borrower would).
• The supporting person may be liable under the mortgage, depending on the specific structure.

Why it can be attractive:

• It may allow the borrower to target a higher purchase price than their income alone would support.
• It can be used where the borrower’s deposit is available, but affordability is the limiting factor.

Typical deposit mechanics (not guaranteed):

• These products often require a meaningful deposit.
• The supporting relative may contribute toward the deposit, but the lender’s rules on deposit sourcing and documentation still apply.

Downsides and risks to consider (JBSP-style)

• The helping party may be financially exposed: because they may be liable for the mortgage, missed payments can affect them directly.
• Affordability and term constraints: mortgage terms can be limited by the supporting person’s age and existing financial commitments.
• Not suitable for every situation: these products are generally limited to certain borrower profiles and lender criteria.
• If affordability is stretched, it can be risky: if the mortgage only works on paper, the household budget may struggle later.

2) Family springboard mortgages

Family springboard arrangements are structured differently from gifted deposits. Instead of simply giving money to the buyer, the helper’s funds are typically placed into a linked savings arrangement that supports the purchase.

How the structure typically works (varies by lender/product):

• The buyer takes out a mortgage (often with a fixed-rate period at the start).
• The helper opens a linked savings account connected to the mortgage.
• The helper deposits a portion of the funds into the savings account.
• The buyer then purchases the property with the arrangement designed to reduce the amount of deposit the buyer needs to provide upfront.

What happens over time (varies by product):

• As long as the buyer maintains the mortgage payments, the helper’s funds are usually released back to them at the end of the fixed period (often with interest).
• After the fixed period, the mortgage typically moves onto a different rate structure, depending on the product terms.

Downsides and risks to consider (family springboard)

• The helper’s money is tied up: the helper may not be able to access those funds for a set period.
• Repayment risk affects the helper’s funds: if the buyer falls behind, the linked savings may be used to help cover arrears or other costs, depending on the arrangement.
• Product limitations: these schemes may have restrictions around property type, purchase price, and lender availability.
• Complexity: the legal and financial mechanics are more involved than a simple gift, so it’s important that everyone understands the moving parts.

How these arrangements can affect affordability

Even where family support is available, lenders still assess the borrower’s situation. That can include:

• Income and outgoings: lenders will look at whether the mortgage payments are affordable.
• Existing commitments: credit cards, loans, and other monthly obligations can reduce what the lender will offer.
• Household stability: lenders may consider factors that affect the reliability of income.

A common misconception is that family support automatically guarantees a mortgage. In reality, the mortgage still has to fit the lender’s affordability model and the product’s specific rules.

Legal and relationship considerations

Bank of Mum & Dad arrangements can be emotionally positive, but they can also create tension if expectations aren’t clear.

Important points to agree early:

• Is it a gift or a contribution? If it’s a gift, it should be treated as such in the lender’s eyes.
• Who is liable? In some structures, the helper may have direct financial responsibility.
• What happens if things change? Consider scenarios such as job loss, illness, relationship breakdown, or moving house.
• How will decisions be made later? For example, if the mortgage needs to be refinanced or if the property is sold.

Practical checklist before choosing a structure

Before deciding which approach to use, it helps to gather the right information:

• Understand the deposit source and whether it will be treated as a gift.
• Clarify the helper’s role: are they supporting affordability, providing deposit funding, or both?
• Check product limitations: some arrangements only work for certain borrower profiles and property types.
• Review the risk on both sides: the buyer’s repayment obligations and the helper’s exposure.
• Make sure documentation is ready: lenders typically require evidence for how funds are provided.

Important

Your home may be repossessed if you do not keep up repayments on your mortgage.

Bank of Mum & Dad can help first-time buyers move sooner, but the “best” option depends on the household’s affordability, the deposit position, and the level of risk the helping party is comfortable with. Choosing the right structure—and setting expectations clearly—can make a meaningful difference to how smooth the process feels later on.