Can I claim a US deduction for a donation to a UK charity under the US-UK tax treaty?

Generally no. Unlike the US-Canada treaty, the US-UK double tax treaty does not contain a general provision granting a US charitable deduction for gifts to UK charities. Section 170 of the Internal Revenue Code restricts the deduction to organisations created or organised in the United States, and a UK-registered charity fails that test regardless of its objects. The practical route to relief on both sides is a dual-qualified vehicle, not a treaty claim; confirm the current treaty text on IRS.gov and GOV.UK before relying on any contrary advice.

What is a dual-qualified charitable vehicle and why does it matter to me?

It is a structure recognised as charitable by both HMRC and the IRS at the same time, typically a UK-registered charity paired with a US 501(c)(3) organisation. A single donation into such a vehicle can support Gift Aid and UK higher-rate relief while also underpinning a US charitable deduction, rather than forcing you to choose one system's relief and abandon the other. The CAF American Donor Fund is the best-known example serving individual US-UK taxpayers, and the larger donor-advised fund sponsors and 'friends of' organisations offer comparable routes.

I have very little UK tax liability this year. Is Gift Aid still safe for me?

Not automatically. A Gift Aid declaration confirms that you have paid at least as much UK income tax or capital gains tax in the year as the charity will reclaim, and if you have not, you are personally liable to HMRC for the shortfall. Americans in Britain whose income is predominantly US-source, or whose UK liability is unusually low in a particular year, can inadvertently trigger that liability on gifts they assumed were costless. Check your projected UK liability against your intended Gift Aid giving before the tax year closes, using the current guidance on GOV.UK.

Should I sell shares and donate the cash, or donate the shares themselves?

For appreciated listed securities, donating the shares directly is usually far better. The US rules generally allow a deduction measured by fair market value for long-term appreciated publicly traded stock given to a public charity without taxing the built-in gain, and the separate UK relief for gifts of qualifying investments gives income tax relief for market value with no chargeable gain arising. Selling first creates a taxable event in both systems before the charity receives anything. The sequencing is irreversible once the trade settles, so decide before you instruct the sale.

Does a US private foundation work for someone who gives mainly to UK causes?

It can, but each grant to a non-US body requires either an equivalency determination or expenditure responsibility, with the diligence and reporting that entails. That is an administrative cost on every gift, and it does not solve the underlying problem that your UK tax liability gets no relief from contributions to a US foundation. Families giving at scale on both sides more often build a dual-qualified pair of entities so that each donor gives into the entity that actually gives them relief, while the philanthropic strategy stays unified.

Are there reporting consequences to giving through an offshore or dual-qualified structure?

Potentially, and they are separate from any tax due. Interests in and signature authority over non-US accounts can trigger FinCEN Form 114, specified foreign financial assets can trigger Form 8938, and transactions with certain foreign trusts can raise Form 3520 questions. These are penalty-bearing information filings that turn on aggregate values against statutory thresholds, so they should be scoped when the structure is designed rather than discovered at filing time. Current thresholds and filing requirements are published on IRS.gov.

US-UK Charitable Giving: Closing the Relief Gap

If you are an American living in Britain and you give to a UK charity, the Gift Aid relief attached to that gift does nothing for you on Form 1040 — and if you write a cheque to a US 501(c)(3) instead, HMRC will not reduce your UK tax bill by a penny. That is the whole of the transatlantic philanthropy gap in two sentences: each country grants charitable relief only for gifts to charities constituted under its own law, so a donor exposed to both systems routinely surrenders relief on one side of the Atlantic entirely. The money still reaches the cause. The tax efficiency does not. For a donor whose marginal exposure runs through both a US federal return and a UK self assessment, the cost of getting the routing wrong is a substantial fraction of every pound given — repeated annually, and compounded on the largest gifts, which are precisely the ones made in a hurry at the end of a tax year or immediately after a liquidity event. The remedy is almost never to give less or to give elsewhere. It is to give through a vehicle that is recognised as charitable by both HMRC and the IRS simultaneously, and to give the right asset into it.

Why does a Gift Aid donation give an American nothing on Form 1040?

Gift Aid is an elegant piece of machinery, and it is entirely domestic. When a UK taxpayer makes a Gift Aid declaration, the charity reclaims basic-rate tax from HMRC on the grossed-up gift, and a donor taxed above the basic rate claims the difference between their marginal rate and the basic rate through self assessment. The declaration carries a condition most donors sign past without reading: the donor must have paid enough UK income tax or capital gains tax in the year to cover the amount the charity reclaims, and is personally liable to HMRC for any shortfall.

None of that mechanism has any counterpart in US law. The US charitable deduction under Section 170 of the Internal Revenue Code is available only for contributions to organisations created or organised in the United States or under the law of a US state. A UK-registered charity, however impeccable its objects and however closely it resembles a US public charity in substance, fails that test on the point of incorporation alone. So the American donor in London who gives to a UK hospice, a Cambridge college or a British arts trust gets full UK relief and a US deduction of nothing — and because that donor is taxed by the United States on worldwide income by reason of citizenship, the lost deduction is a real and recurring cost, not a theoretical one.

The asymmetry bites hardest on the donor who has both a meaningful UK tax liability and a meaningful residual US liability after foreign tax credits. That describes a great many post-exit entrepreneurs, fund principals with US-source carry, and anyone holding US real estate or a substantial US securities portfolio. Current UK relief mechanics and Gift Aid conditions are set out on GOV.UK, and the US deduction rules on IRS.gov; both are worth re-reading each year rather than relying on what was true when the family's giving pattern was first established.

Why does a cheque to a US 501(c)(3) earn no UK relief?

The mirror image is just as unforgiving. UK charitable reliefs — Gift Aid, the relief for gifts of qualifying investments, and the inheritance tax exemption for charitable legacies — attach to gifts made to bodies that meet HMRC's definition of a charity. That definition turns on establishment in a qualifying territory and on management by fit and proper persons, and a US 501(c)(3) organisation sitting in New York or California is not within it. The gift is generous; it is not, for HMRC's purposes, relievable.

This catches the American who has moved to Britain but kept a lifelong giving relationship with a US university, church, museum or family foundation. The instinct is to carry on giving exactly as before. The consequence is that the donor now pays UK tax on income that is funding a gift attracting no UK relief, while claiming a US deduction that may be worth far less than expected because foreign tax credits have already reduced the US liability the deduction would have offset. In the worst version of this arrangement, the deduction is economically worthless on both sides: no UK relief because the recipient is American, and no meaningful US benefit because there was little residual US tax left to shelter. The donor has, in effect, given from post-tax income at the highest combined rate available to them.

What does Article 24 of the US-UK treaty actually do here?

Donors reach for the treaty and are usually disappointed. The US-UK double tax treaty is not, in this area, what the US-Canada treaty is. The Canadian treaty contains an express provision permitting each country to grant charitable relief for gifts to the other's charities within defined limits. The US-UK treaty does not carry an equivalent general cross-border charitable deduction, and a great deal of confident lounge-bar advice to the contrary is simply wrong. The treaty article that matters most to the philanthropic American in Britain is Article 24, the relief from double taxation article, and its practical contribution is indirect.

Article 24 contains the re-sourcing machinery that allows a US citizen resident in the UK to treat certain income as arising outside the United States so that UK tax paid on it can be credited against the US liability. That mechanism governs how much residual US tax a donor actually has — and therefore how much a US charitable deduction is worth to them. It does not create a deduction for a gift to a UK charity. Understanding that distinction is the whole point: the treaty determines the value of relief you have, not whether a cross-border gift generates relief in the first place. Because treaty text and the accompanying technical explanation are the controlling documents and are periodically supplemented by protocols and competent authority agreements, the current versions published on IRS.gov and GOV.UK should be the reference in any actual planning discussion, not a summary in an article — including this one.

Where exactly does the relief leak away?

The one-sided gift. Cash to a UK charity by an American donor: full Gift Aid and higher-rate relief, zero US deduction. Cash to a US charity by a UK-resident donor: a US deduction of uncertain value, zero UK relief. Either way, one system's relief is simply abandoned.
The insufficient-UK-tax trap. Gift Aid requires the donor to have paid at least as much UK tax as the charity reclaims. An American whose UK liability is low in a given year — because income is US-source, or because reliefs and credits have reduced it — can trigger a personal liability to HMRC for the shortfall on gifts they thought were costless.
The wasted deduction. A US deduction only helps if there is US tax left to reduce. For a UK-resident American whose foreign tax credits already absorb most of the US liability, a large 501(c)(3) gift can produce a deduction with little or no cash value, subject to carryforward rules that may never be used.
The wrong asset. Giving cash raised by selling an appreciated holding realises gain in both systems before a penny reaches the charity. Giving the asset itself, into the right vehicle, can eliminate the gain on both sides — but only if the disposal has not already happened.
The pledge signed before the structure exists. Multi-year gift agreements, naming rights and matched-funding commitments are frequently signed with a named recipient and a payment schedule, foreclosing the routing options that would have preserved relief. Restructuring after signature is an exercise in the recipient's goodwill.
The family foundation on the wrong side. A US private foundation making grants to UK bodies, or a UK charitable trust funded by a US-taxable settlor, introduces expenditure responsibility, equivalency determination and reporting burdens that a dual-qualified vehicle largely avoids.

How do dual-qualified charities and vehicles close the gap?

The working solution is structural, not interpretive. A dual-qualified vehicle is an arrangement recognised as charitable by HMRC and by the IRS at the same time — most commonly a pairing of a UK-registered charity with a US organisation holding 501(c)(3) status, operated so that a single donation qualifies for Gift Aid and higher-rate UK relief and simultaneously supports a US charitable deduction. The best-known example serving individual donors is the CAF American Donor Fund, operated by the Charities Aid Foundation, which exists precisely to serve dual US-UK taxpayers. Comparable dual-qualified and intermediary structures include CAF America, the transatlantic offerings of the larger donor-advised fund sponsors, and the long-established 'friends of' organisations through which UK institutions accept US-deductible gifts.

The economics are worth stating plainly. Where the vehicle works as intended, the UK relief and the US deduction stack against the same underlying gift rather than one of them being discarded. The charity receives the gift plus, where applicable, the Gift Aid reclaim; the donor claims UK higher-rate relief through self assessment and a US deduction on Form 1040 within the applicable Section 170 percentage limitations, with carryforward for any excess. The interaction of the Gift Aid grossing-up with the amount treated as contributed for US purposes is a technical question the vehicle's own documentation addresses, and it is one of the few places where the answer genuinely depends on which sponsor you use.

There is a governance trade-off. Because the vehicle is usually a donor-advised fund, the donor advises rather than directs; legal control of the assets passes to the sponsor. For most philanthropists that is a formality. For a founder who wants a permanent named institution with a family board, it is not, and the analysis moves to whether a dual-qualified charity of their own, or a pair of aligned entities, is proportionate to the giving programme's scale.

How should appreciated stock be given so both regimes give relief?

This is where cross-border planning stops being defensive and starts creating real value. Both systems reward the gift of appreciated listed securities, and they do it through different doors. Under US rules, a gift of long-term appreciated publicly traded stock to a public charity generally supports a deduction measured by fair market value while the built-in gain goes untaxed — subject to the applicable percentage-of-income ceilings and, for non-publicly-traded property, a qualified appraisal and Form 8283 substantiation. Under UK rules, Gift Aid does not apply to shares at all; instead the separate relief for gifts of qualifying investments allows a deduction against income for the market value of listed shares given to charity, and the disposal is treated so that no chargeable gain arises.

Give the shares into a dual-qualified vehicle and both doors open on the same transaction: no US capital gain, no UK chargeable gain, a US deduction and UK income tax relief. Sell first and donate the proceeds, and you have manufactured a taxable event in two countries in order to make a gift that would have been tax-free in both. The sequencing is the entire planning point, and it is irreversible once the trade settles.

Two cautions. First, the UK relief for gifts of shares is subject to the general cap on certain income tax reliefs, and unquoted or restricted stock — the shares a post-exit founder most wants to give — raises valuation questions on both sides that must be settled before transfer, not after. Second, the acquisition history matters: holding period, whether the shares came from an option or restricted stock award, and whether the position is subject to lock-up all bear on the outcome. The current mechanics for gifts of shares are documented on GOV.UK and the substantiation requirements on IRS.gov.

What should you establish before signing a gift agreement?

The recipient's status in both jurisdictions. Not 'is it a charity' but 'is it recognised as charitable by HMRC and by the IRS, and if only one, what dual-qualified route exists to reach it?' Ask for the specific registration and determination evidence rather than accepting reassurance.
Your residual liability on each side for the year of the gift. Relief is only worth what it offsets. Model the US position after foreign tax credits and the UK position after all reliefs before deciding which system's relief you are trying to capture.
The asset, not just the amount. Cash, listed shares, unquoted stock, real property and cryptoassets are treated differently in each regime, and the best-taxed asset is frequently not the one the donor first reaches for.
The timing. Gift Aid carry-back elections, UK tax year ends on a different date from the US calendar year, and a liquidity event that straddles the two can make a gift dramatically more or less efficient depending on which side of a year end it falls.
The reporting consequences. Funding an offshore structure, holding a foreign account for a family charitable vehicle, or interposing a non-US entity can pull in Form 8938, FinCEN Form 114 and, in some structures, Form 3520 obligations that have nothing to do with tax due and everything to do with penalties.
The exit. Gifts made shortly before or after a change of residence, or in contemplation of leaving the UK or the US, need to be tested against the residence position in the year of the gift rather than the year the pledge was made.

Does the answer change for a family foundation or a large multi-year commitment?

It changes in degree rather than in principle. Once a giving programme is large enough to justify its own institution, the choice is between a US private foundation, a UK charitable trust or company, and a dual-qualified pair. A US private foundation grant-making to UK bodies must undertake either an equivalency determination or expenditure responsibility for each grant, with the associated diligence and reporting — workable, but an administrative levy on every gift. A UK charity funded by a US-taxable settlor raises its own questions about the settlor's US treatment of contributions and, where family members are involved, about the entity's US classification.

The dual-qualified pair — a UK charity and an aligned US organisation, each grant-making in its own jurisdiction and each accepting gifts from the taxpayer exposed to that jurisdiction — is the structure most large transatlantic families converge on, precisely because it lets each donor give into the entity that gives them relief while the philanthropic strategy remains single. It costs more to build and more to run. Against a giving programme of real scale, the relief preserved usually pays for the structure several times over in the first year.

What should you do before the next giving season?

Start by auditing what you already give and where it lands. Most donors discover, on the first honest look, that a material share of their annual giving is producing relief in only one system, and that the pattern is a legacy of where they lived when the relationship with the charity began rather than a decision anyone made. Map each recurring gift against the recipient's status in both jurisdictions, and identify which ones could be routed through a dual-qualified vehicle to the identical beneficiary with no change in what the charity actually receives — which is, in a surprising number of cases, most of them.

Then look forward. If a liquidity event, an option exercise, a lock-up expiry or a change of residence is anywhere on the horizon, the giving plan should be built before the transaction, not bolted on after it. Appreciated stock given ahead of a sale is a different instrument from cash given after one. And if a named gift, an endowment or a multi-year pledge is under discussion, settle the routing before the agreement is drafted; recipients are almost always willing to accept a gift through a dual-qualified channel when asked in advance, and almost always reluctant to renegotiate once the announcement has been made.

None of this is generic. It depends on your residence and domicile position, your marginal exposure in each system in the specific year of the gift, the assets available, and the recipient's own constitution. Confirm current thresholds, limits and reliefs against IRS.gov and GOV.UK rather than against last year's assumptions, and take advice on your own facts before committing to a gift of any consequence. The philanthropy is the point; the relief is simply the part of it that should not be left on the table.