All the Ways Parents Can Help Their Child Buy a Home in 2026/27

With average house prices in England still above £290,000 and a typical first-time buyer deposit requirement of 10%, most young buyers are facing a deposit requirement of £29,000 or more before they even consider conveyancing costs or moving expenses. The Bank of Mum and Dad remains one of the most significant sources of housing finance in the UK, but the mechanisms available are far more varied -- and more legally nuanced -- than a simple bank transfer.

This guide sets out every option available to parents who want to help in 2026/27, along with the IHT, SDLT and legal implications of each.

Option 1: The Outright Gift

The simplest approach: parents give cash to the child, who uses it as a deposit. From the child's perspective, there is no tax to pay on a cash gift -- it is not income and it is not a capital gain.

From the parents' perspective, the tax position depends on IHT:

• Annual exemption: Each parent can give £3,000 per year free of IHT. A couple can give £6,000 per year to any combination of recipients. Unused allowance can be carried forward one year only.
• PET (Potentially Exempt Transfer): Any gift above the annual exemption starts the 7-year clock. If the donor dies within 7 years, the gift may be pulled back into the estate.
• Normal expenditure out of income: Regular gifts funded from surplus income (not capital) that do not reduce the donor's standard of living are immediately exempt, with no 7-year clock. This must be regular and documented.

A large one-off deposit gift from capital is typically a PET. Parents in good health with no immediate concerns about their estate may simply gift and note the gift in writing. Those with larger estates may want to consider whether the normal expenditure exemption is applicable or whether life insurance to cover the potential IHT liability is worthwhile.

Lender requirements for gifts: Every mortgage lender requires a gift letter confirming the money is a gift (not a loan), the donor's relationship to the buyer, and that the donor has no interest in the property.

Option 2: Joint Borrower Sole Proprietor (JBSP) Mortgage

JBSP is arguably the most tax-efficient parental assistance structure available. It works like this:

• Parents are named on the mortgage for borrowing capacity assessment
• Parents are NOT named on the title deeds
• The child is the sole legal and beneficial owner

Why this matters for SDLT: If parents already own their home and were added as joint owners on the property title, the 3% additional dwelling surcharge would apply. On a £250,000 purchase, that is an extra £7,500 in SDLT. Because JBSP parents are not on the title, no surcharge triggers.

Practical considerations:

• Not all lenders offer JBSP products -- you may need a mortgage broker to find one
• The parents' income and credit history are assessed and affect the mortgage offer
• If the child defaults, the parents are contractually liable for the mortgage
• The mortgage typically comes off the parents' credit record once the child refinances alone

Lenders offering JBSP-style products in 2026 include Barclays, Nationwide and several building societies. Terms and maximum ages for the borrower on the mortgage vary.

Option 3: Springboard and Family Offset Mortgages

Barclays' Family Springboard Mortgage and similar products from other lenders allow parents to deposit a lump sum (typically 10% of the purchase price) into a savings account linked to the child's mortgage. The savings serve as collateral, allowing the child to borrow at a higher LTV.

How it works:

• Parents deposit, say, £25,000 into a linked account for a £250,000 property
• The child can borrow the full £250,000 (100% LTV effectively)
• After 5 years of on-time payments, the savings are returned to parents with interest
• Parents have no ownership rights, no SDLT implications

The risk: if the child defaults during the 5 years, the lender can draw on the savings. Parents should assess the child's ability to maintain payments before pledging their savings.

Option 4: Deed of Trust for Shared Beneficial Ownership

If parents contribute a large deposit and want their contribution protected in case the property is sold later, a deed of trust is the mechanism to use. This is particularly relevant if:

• The child is buying with a partner and the relationship might break down
• The parents cannot afford to lose the capital
• The gift is conditional on being returned on sale

Example: Parents contribute £40,000, child and partner contribute £20,000. Total deposit: £60,000 on a £300,000 property (20% deposit). A deed of trust records that parents hold 13.3% beneficial interest, child holds 43.3%, partner holds 43.3% (or any other agreed split).

If the property is later sold for £360,000 and the mortgage is repaid, the parents receive their proportionate share of the equity.

SDLT note: Deeds of trust do not usually create an SDLT liability if the parents are not taking ownership -- they are recording beneficial interest, not triggering a land transaction. However, this area is complex and you should always get solicitor advice on the specific arrangement.

Option 5: Parents as Guarantors

Some lenders offer guarantor mortgages where a parent agrees to cover repayments if the child defaults, with the parent's own home potentially at risk as security.

Risks for parents:

• Your home can be repossessed if the child defaults
• Your credit rating is affected by missed payments
• It can affect your ability to borrow in future

Advantages: The child may access a higher loan amount than their income alone would support, and there is no ownership transfer or SDLT implication.

Better alternatives: JBSP is generally lower risk for the parents because it creates a clear contractual liability but does not charge parental property as security in most implementations.

Option 6: Funding the Lifetime ISA

The Lifetime ISA (LISA) allows first-time buyers to save up to £4,000 per year and receive a 25% government bonus (£1,000 per year). Parents can give money to a child and the child deposits it into their LISA.

LISA rules to remember:

• Must be opened between ages 18 and 39
• Maximum property purchase price: £450,000
• Must be held for at least 12 months before use
• Withdrawal penalty of 25% (effectively losing the bonus) if not used for a qualifying purpose

By funding a child's LISA annually from age 18, parents can effectively add £1,000/year in government money to their child's future deposit. Over 5 years, a fully funded LISA generates £5,000 in bonuses on top of £20,000 in parental contributions.

The SDLT Trap of Joint Ownership

If parents are tempted to simply co-buy a property with their child and split the mortgage, be aware of the SDLT consequences:

• If either parent already owns residential property (including their own home), the 3% surcharge applies to the full purchase price
• On a £275,000 property, this adds £8,250 in extra SDLT
• The child also cannot claim first-time buyer SDLT relief in a joint purchase with an existing property owner

This is the core reason JBSP and springboard structures are preferable to straightforward joint ownership. The tax saving over JBSP can be substantial.

Practical Checklist for Parents

1. Confirm whether the deposit is a gift or a loan (gift = gift letter needed; loan may affect lender's affordability assessment)
2. Consider whether a deed of trust is needed to protect your contribution
3. Ask a mortgage broker about JBSP availability before committing to joint ownership
4. Document any large gifts in writing for IHT evidence
5. If making regular contributions over time, document these as regular income gifts for IHT normal expenditure purposes
6. Check the SDLT position before agreeing to be named on any title

Use our Stamp Duty calculator and LISA calculator at calchub.uk to model the costs for your specific family situation.