Gifting a Share of Your Home to Adult Children: When It Works, and When It Backfires
For most families the home is the largest asset in the estate, and the one with the fewest planning options. There is one route that works genuinely well, but only in narrow circumstances: gifting a share of the property to adult children who already live in it. Done properly it can take several hundred thousand pounds out of an estate. Done carelessly it achieves nothing at all, and can cost more than it saves.
The idea in one paragraph
You give an adult child a share of the house — say half — as an outright gift. You carry on living there, and so do they. If you survive seven years, that half falls out of your estate for inheritance tax. On a £2 million home, gifting half removes £1 million from the estate, which at 40% is £400,000 of inheritance tax saved.
Why it does not trigger the usual taxes
Capital gains tax
A gift is treated as a disposal at market value, so a gain arises on the share you give away. Private Residence Relief covers it where the property has been your only or main residence throughout your ownership, so in the straightforward case there is no capital gains tax to pay.
Stamp duty
A gift for no consideration falls outside stamp duty land tax. One exception matters: if the child takes on a share of an outstanding mortgage, that counts as consideration and SDLT can become payable on it.
Inheritance tax
The gift is a potentially exempt transfer. Survive seven years and it leaves your estate entirely. Die within seven years and it comes back into the calculation, with taper relief available on the tax after three years.
The condition that makes or breaks it
This is where most attempts fall down. Ordinarily, giving something away while carrying on enjoying it is a gift with reservation of benefit — HMRC treats the asset as still yours, and the exercise achieves nothing.
There is a specific let-out for land, at section 102B(4) of the Finance Act 1986. A gift of an undivided share of a property escapes the reservation rules where:
you and the person you gave the share to both occupy the property, and
you receive no benefit at their expense, beyond a negligible one.
In practice that means the adult child must genuinely live there as their home, and each of you must bear your own share of the running costs. If your child moves out, or quietly pays all the bills for you, the relief is at risk. It is also why the same approach can work for grandchildren living with grandparents — and why it does not work at all where the children moved out years ago.
How it is usually structured
The property is held as tenants in common rather than joint tenants, so each share passes separately.
A bare trust is often used where the circumstances call for it.
No mortgage debt is taken on by the children.
Occupation, contributions to costs and the intention behind the gift are documented at the time, not reconstructed later.
What can still go wrong
Your child's circumstances become your problem
Once they own a share of the house, it is exposed to their divorce, their bankruptcy and their creditors. Families consistently underestimate this one.
Their capital gains tax bill later
The share is their main residence while they live in it. If they move out and the house is sold years later, the period of absence can bring a capital gains tax charge on their share.
Care costs
Local authorities can look at deliberate deprivation of assets when assessing care funding. There is no seven-year rule protecting you here.
Pre-owned assets tax
Where a gift escapes the reservation of benefit rules, an income tax charge on pre-owned assets can apply instead. It needs checking on the facts rather than assuming it away.
You cannot change your mind
A gift is a gift. If your circumstances change, you cannot simply take the share back.
Who this actually suits
The circumstances are narrow, and worth stating honestly: a valuable home, an adult child genuinely living in it for the long term, parents in good health with seven years in front of them, and a family relationship robust enough to share ownership of the roof over everyone's head.
What to do now
Get the property valued, and work out what proportion of the estate it represents.
Confirm the adult child's occupation is genuine and likely to continue.
Check the mortgage position — it is the most common reason the plan changes shape.
Take advice on the pre-owned assets charge specifically.
Have the conveyancing and any trust documents drawn up properly. This is not a do-it-yourself exercise.
Rates and thresholds are those applying for the 2026/27 tax year and can change.
Flow advises families on inheritance tax and the ownership of the family home — including whether this route fits your circumstances and what it would genuinely save. If you would like to talk it through, book a free, no-obligation discovery call with one of our tax team.
Comments