Upstream gifting: how giving in the USA saves capital gains tax
Picture this: you now live in the USA. Years ago you bought a few shares for a few hundred dollars. Today they are worth a small fortune: maybe $30,000, maybe $3 million. You want to look after your son and think: I'll just give him the shares directly.
Sounds like a good idea. From a tax point of view, it's a disaster.
Because in the USA, the recipient of a gift generally takes over the donor's original cost basis. (If the market value at the time of the gift is lower, that lower value applies for a later loss.) So if your son receives your Nvidia shares worth $30,000 that you once bought for $300, his tax basis is $300. When he sells, he pays capital gains tax on the entire $29,700 gain.
Depending on income, that means 15% or 20% long-term capital gains tax, possibly plus the 3.8% Net Investment Income Tax (NIIT). Even on a moderate income, that quickly adds up to $4,500 to over $6,000 in tax, simply because you passed the shares on the "wrong" way.
A direct gift down the family line turns your present into a tax trap.
The brilliant solution: upstream gifting
The American answer to this problem is as simple as it is brilliant: gift up, not down.
This is called upstream gifting. Instead of transferring the shares straight to your son, you first give them to your parents or grandparents.
Why? Because in the USA, when a taxpayer dies, the magic principle of the step-up in basis kicks in.
The step-up in basis: America's secret weapon against capital gains tax
Under US tax law, when a person dies, the cost basis of all inherited assets is stepped up to their current market value.
An example:
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Nvidia purchase price: $300
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Market value at death: $30,000
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The heir takes over the shares with a basis of $30,000
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Sale at $30,000 = zero tax
The entire tax bill disappears in an instant.
A worked example: the smart parent
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You own Nvidia shares worth $30,000, bought for $300.
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You want your son to have them.
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Instead of gifting them directly, you first transfer the shares to your 94-year-old grandmother.
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She names your son as beneficiary.
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When she dies, he inherits the shares with a new basis of $30,000.
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If he sells right away, there is no capital gains tax.
For comparison:
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With a direct gift, your son would have taken over your basis of $300.
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Selling at $30,000 would have produced a gain of $29,700.
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In the USA, that gain would have carried 15% ($4,455) or 20% ($5,940) capital gains tax.
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Above a certain income, the 3.8% NIIT would have been added too, for a total of roughly $7,070 in tax.
Upstream gifting avoids exactly this tax bill (several thousand dollars) completely and legally.
America's huge exemptions make it possible
Another reason upstream gifting is so powerful lies in the enormous exemptions in US tax law.
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In the USA, the gift and estate tax exemption in 2026 is $15 million per person. Married couples can therefore pass on $30 million tax-free.
That means:
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Even very large share portfolios (worth several million or even tens of millions) can easily be gifted "upstream".
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In most cases the gift triggers no gift tax, because the exemptions are so high.
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When the recipient dies and the shares pass to the next generation with a step-up in basis, no estate tax is due either, as long as the total value stays below the exemptions.
Example 1: The lucky American
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John lives in Texas and is a US citizen.
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He buys Tesla shares for $100,000.
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After 10 years they are worth $1 million.
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He gives them to his 85-year-old mother.
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When she dies, the daughter inherits the shares with a basis of $1 million.
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Sale proceeds: $1 million. Tax: zero.
Why the American system makes families wealthier
In the US, families can pass their wealth down through the generations without unrealized gains ever being taxed. Entire stock portfolios, real estate and businesses change hands tax-free. That is how family dynasties are built that preserve and grow their wealth.
Only a win for genuine emigrants
Upstream gifting is one of the biggest tax advantages in the American system. But it only works if:
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everyone involved is tax resident in the US, and
Ignore these conditions and you risk a nasty surprise: double taxation, back taxes and disputes with the tax authorities.
Advice for people moving to the USA
Planning to make the USA your new home? Do you already hold large investment portfolios or real estate and want to pass them on to the next generation tax-efficiently?
Then act early. With the right structure, you can not only protect your wealth but also transfer it tax-free. Our guides explain how US estate tax for non-US citizens works and what belongs in your tax planning before the move; you will find more articles under News.
At Mount Bonnell Advisors, we have advised entrepreneurs, investors and high-net-worth individuals from Europe for many years on relocation, company formation and succession planning.
👉 Book your personal consultation now.
Because what matters is not how much you earn, but how much you keep in the end.
Consultation & implementation
If you'd like to find out what this means for your own situation, the best step is to book a consultation.