Gifting shares in a UK company as a US citizen is taxed twice over in form, though rarely in cash if planned. The UK treats the gift as a disposal at market value, which gift hold-over relief can defer only if the child is UK resident. The US treats it as a gift reported on Form 709 once it passes the annual exclusion, and the child inherits your basis. Where the children are US persons, they may also start filing Form 5471 themselves.
This post is for US citizen owners of a UK trading company who want to pass shares to adult or minor children, some of whom may live in the US. It extends the gift and estate section of our guide to US-UK tax for founders, fund managers and executives. It does not repeat our posts on alphabet shares with a US shareholder or selling a UK company as a US citizen. It covers the UK capital gains and inheritance tax position, the US gift return, Form 5471, dividends, and the order in which to do things.
What UK tax arises when you give away shares in your company
For a UK resident parent, a gift of shares is a disposal for capital gains tax at market value, even though nothing is paid. The gain is the difference between that value and your base cost. Gift hold-over relief can defer it, so the child takes over your gain, provided the shares and the child both qualify.
HMRC's helpsheet HS295 sets out the conditions. Shares in an unlisted trading company, or the holding company of a trading group, qualify, and AIM does not count as a recognised stock exchange. The donor and the child claim jointly, on a separate form for each gift, which can be attached as a PDF to an online return due by 31 January. Without the claim, the gain is taxed at the Capital Gains Tax (opens the official GOV.UK page in a new tab) rates, currently 18% and 24%.
Two restrictions catch family companies. Where the company is your personal company, meaning you can exercise at least five per cent of the votes, the held-over gain is cut back for chargeable non-business assets such as an investment portfolio or let property inside the company. And HMRC's Capital Gains Manual says relief is generally unavailable where the child is not UK resident, or is UK resident but treated as resident elsewhere under a tax treaty, because a later sale would fall outside UK tax.
- Unlisted trading company or holding company of a trading group
- Joint claim by parent and child, one form for each gift
- Gain restricted where the company holds chargeable investment assets
- Child UK resident at the time of the gift, and not treaty resident abroad
- Gain charged on the child if they emigrate within six years of the end of the tax year of the gift, still holding the shares
How inheritance tax treats a gift of company shares
A gift of shares to an individual is usually a potentially exempt transfer. No inheritance tax is due when it is made, and none is due later if you survive seven years. If you die within seven years, the gift is counted against your nil-rate band, with taper relief on gifts made three to seven years before death.
Business Relief can then reduce the value of a failed gift. Shares in an unlisted trading company are within the relief, but for a lifetime gift HMRC's manual sets two further conditions: the child must have owned the shares from the gift until your death, and they must still be relevant business property at that point. A child who sells the shares within seven years, and does not reinvest in qualifying property under the replacement rules, can turn a relieved gift into a charge at 40% above the £325,000 nil-rate band.
From 6 April 2026, full relief on business and agricultural property is capped at a combined allowance, with relief at the lower rate above it, according to GOV.UK's Inheritance Tax (opens the official GOV.UK page in a new tab) guidance. HMRC's summary of the reforms says gifts made on or after 30 October 2024 fall within the new rules where the donor dies on or after 6 April 2026. A parent who is not a long-term UK resident still pays inheritance tax on UK assets, and shares in a UK company are generally UK assets. Our post on the US-UK estate tax treaty explains how the two estate taxes meet.
When does gifting shares in a UK company as a US citizen need Form 709
A US citizen files Form 709 for any year in which gifts to one child exceed the annual exclusion, which for 2025 was $19,000 per recipient. The excess uses part of your lifetime exclusion, $13.99 million for 2025, so tax is rarely payable. The return is due by 15 April of the following year.
The IRS page on gift tax (opens the official IRS page in a new tab) confirms that the giver, not the child, is responsible for the return. The value is fair market value on the date of the gift, and for private company shares that usually means a valuation. The Form 709 (opens the official IRS page in a new tab) instructions say the assessment period starts only once a gift is adequately disclosed, which can be done with a qualified appraisal or a detailed description of the method. An extension of your income tax return to 15 October also extends Form 709. Married couples can split gifts only where neither spouse is a nonresident who is not a US citizen.
For US income tax the gift is not a sale, so you report no gain. Under Publication 551 (opens the official IRS page in a new tab) the child's basis for a later gain is your adjusted basis, with a different rule for losses where the value at the gift is below your basis. That creates the mismatch to plan around: where no hold-over is available, the UK taxes you now on a gain the US ignores, and the US later taxes the child on the same growth. The two charges fall on different people in different years, so the credit rules are unlikely to line them up.
Does a gift to your children change who files Form 5471
Often, yes. Where the children are US persons, the gift does not usually change whether the company is a controlled foreign corporation, because their shares still count as US-held. It does change the filers: each child who holds shares directly becomes a possible filer, and you may file for the disposal.
The Instructions for Form 5471 (opens the official IRS page in a new tab) place in category 3 a US person who acquires stock taking them to ten per cent or more by vote or value, and a US person who disposes of enough to fall below it. Their own example is a US citizen who gives half a ten per cent stake to his child and files Section D of Schedule O, entering gift as the method. A US citizen director is in category 2 when a US person acquires ten per cent. Each missing form carries an initial penalty of $10,000.
Family attribution reaches further than the register. Shares owned by parents and children can be counted as owned by each other, so a child with a small direct stake can be a US shareholder through yours. The constructive owner exceptions apply only to someone with no direct interest, which a gift removes. The multiple filers rule lets one form report for several family members with the same information. Where a child is not a US person, the IRS does not attribute their shares to you, so the gift reduces the US-held total.
Who is taxed on dividends from shares given to a child
An adult child is taxed on dividends from shares given outright, in the UK if UK resident and in the US if a US person. For a child under 18 who is unmarried, UK settlements rules usually tax the dividend on the parent who made the gift, above a small annual amount per parent.
HMRC's manual on settlements for minor children applies the rule to income paid to, made available to or belonging to the child, so a bare trust or nominee holding is caught as much as a direct holding. It is separate from the settlor-interested rule (opens the official HMRC page in a new tab) for trusts in which the settlor keeps an interest. A gift to a minor therefore moves capital value for inheritance tax but leaves the UK dividend tax with you until the child turns 18 or marries.
The US has no parallel rule moving the income back to the parent, so a US citizen child reports the dividend on their own return, and a US citizen parent may report the same dividend in the UK. Where the shares sit in a trust or nominee arrangement for a minor, its US classification needs checking before the shares move, as the guide explains for UK trusts funded by US persons. A child holding the shares directly may also need Form 8938 once the thresholds are met.
A step-by-step order for the gift, with a worked example
Do the residence and status check first, the valuation second and the paperwork last. Most avoidable cost comes from giving shares to a child who turns out to be US resident, or from a valuation that the UK and US returns describe differently.
Take a US citizen founder living in Leeds who owns every share in a UK software company. Her daughter, a US citizen, works in Manchester; her son, also a US citizen, lives in Boston. She gives each of them a stake above ten per cent. The daughter's gift qualifies for hold-over, so they claim jointly and no UK gain arises now. The son is not UK resident, so the gain on his shares is taxed on her in the UK that year, with no US gain to set it against.
On the US side she files Form 709 for both gifts, using lifetime exclusion, and the children take her basis. The company stays a controlled foreign corporation, because every shareholder is a US citizen. Both children file category 3 for the acquisition, she files category 2 as a director, and all three review categories 4 and 5 from then on. Our gift tax returns and business tax returns services run these together, and estate and trust planning covers the seven-year exposure. The guide to US-UK tax for founders, fund managers and executives has the wider picture.
- Confirm each child's UK residence, US status and treaty position on the gift date
- Check the company's investment assets, which can restrict hold-over and Business Relief
- Obtain one valuation and use the same figure, converted, on both returns
- Sign stock transfer forms, update the register and make the joint hold-over claim
- File Form 709 and the new Form 5471 categories for the gift year
- Record each child's inherited basis and the seven-year inheritance tax window
General information, not advice. The right answer depends on your circumstances and the tax year concerned.
