Billionaires Michael and Susan Dell pledged $6.25 billion Tuesday to provide 25 million American children 10 and under an incentive to claim the new investment accounts for children created as part of President Donald Trump’s tax and spending legislation.

The so-called “Trump Accounts” were created as part of President Donald Trump’s tax and spending legislation but have not yet launched.

The gift has little precedent in terms of size, with few single charitable commitments in the past 25 years exceeding $1 billion.

Its structure is also unusual. Essentially, it builds on the “Trump Accounts " program, where the U.S. Department of the Treasury will deposit $1,000 into investment accounts it sets up for American children born between Jan. 1, 2025 and Dec. 31, 2028. The Dells’ gift will use the “Trump Accounts” infrastructure to give $250 to each qualified child under 11.

Though the “Trump Accounts” became law as part of the president's signature legislation in July, the Dells say the accounts will not launch until July 4, 2026.

Michael Dell said they wanted to mark the 250th anniversary of U.S. independence.

Under the new law, “Trump Accounts” are available to any American child under 18 with a Social Security number. Account contributions must be invested in an index fund that tracks the overall stock market. When the children turn 18, they can withdraw the funds to put toward their education, to buy a home or to start a business.

The Dells will put money into the accounts of children 10 and younger who live in ZIP codes with a median family income of $150,000 or less and who won't get the $1,000 seed money from the Treasury. Because federal law allows outside donors to target gifts by geography, the Dells said using ZIP codes was “was the clearest way to ensure the contribution reaches the greatest number of children who would benefit most.”

The Dells hope their gift will encourage families to claim the accounts and deposit more money into it, even small amounts, so it will grow over time along with the stock market.

There is a political benefit for Trump and fellow Republicans. The accounts will become available in the midst of a midterm election, providing money to millions of voters — and a campaign talking point to GOP candidates — at a critical time politically. The $1,000 deposits are slated to end just after the 2028 presidential election.

At the White House on Tuesday, Trump praised the Dells saying their gift was, “truly one of the most generous acts in the history of our country.”