Some of America's biggest technology companies are saving billions on their federal taxes while spending heavily on artificial intelligence. Those savings have caught the attention of Sen. Elizabeth Warren, who wants to know how much they're costing the government.
Warren and five other senators have launched an investigation into tax breaks benefiting Amazon, Meta, Alphabet, and Microsoft under President Donald Trump's 2025 tax law. With corporate tax revenue reportedly down 9% this year, lawmakers are questioning whether those savings could eventually come at a cost to ordinary taxpayers who are already trying to cope with increasing bills.
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Warren says Big Tech is receiving billions in tax breaks
On September 28, Warren announced an investigation into how much four of America's largest technology companies have saved under Trump's One Big Beautiful Bill Act.
The lawmakers argue that tax breaks for AI development and data center investments are allowing highly profitable companies to dramatically reduce their federal tax bills.
"These tax breaks are not free — their cost has been imposed on American families via cuts to critical social services and a higher deficit," the senators wrote.
Corporate tax revenue is down 9% this year
According to figures cited by Warren and the other senators, corporate income tax receipts fell about 25% during the first 11 months of fiscal year 2026, even as major technology companies reported rising profits.
Warren argues that tax breaks for AI spending contributed substantially to those declines. However, those figures don't show that every dollar of the companies' lower tax expense came from Trump's tax law. The investigation aims to determine how much did.
Even so, Warren's broader concern is that while companies are keeping more of their profits, the federal government is collecting less. The investigation doesn't establish that individual taxpayers will face higher taxes as a result.
How Trump's tax law benefits AI investments
One of the biggest changes restored 100% bonus depreciation for certain qualifying property acquired and placed in service after January 19, 2025. That allows businesses to deduct the full cost of eligible equipment upfront rather than spreading the deduction over several years.
That can be especially valuable for technology companies spending heavily on servers, computing equipment, and other data center infrastructure.
A company spending $100 million on qualifying equipment could potentially deduct the full amount immediately. At a 21% corporate tax rate, the tax effect could be substantial, although the exact savings would depend on its taxable income and other circumstances.
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Supporters say the tax breaks encourage investment
Supporters argue that faster deductions encourage companies to invest more in the United States. The Trump administration has made expanding domestic AI infrastructure a major economic priority, highlighting new data centers and AI investment across the country.
They say that spending could support construction, equipment purchases, jobs, and broader economic activity. If that growth eventually generates more tax revenue, it could offset some of the revenue the government gives up initially and reduce the pressure for future tax increases or spending cuts.
Warren and the other senators question whether companies already planning to spend heavily on AI needed such large tax incentives in the first place. If the tax breaks don't generate enough additional growth, the government could be left with less revenue and more pressure to make up the difference elsewhere.
Could ordinary taxpayers end up paying more?
A drop in corporate tax revenue does not automatically mean your personal tax bill is about to rise. Congress has not approved a new individual tax increase specifically to offset the Big Tech tax breaks Warren is investigating.
The connection is more indirect. If the government collects less revenue while spending remains unchanged, it may need to borrow more, increasing the deficit.
Over time, lawmakers could respond to those budget pressures through spending cuts, tax changes, or both. That could eventually affect household finances, but there is no direct line from these corporate deductions to a specific future tax increase or benefit cut.
What happens next?
Warren's investigation is focused on obtaining more information from the four companies rather than immediately changing the tax law.
Among the details lawmakers are seeking are the tax benefits tied to AI investments and the companies' lobbying around the 2025 legislation.
Those responses could help Congress assess how much revenue the government is giving up and whether the incentives are generating enough additional investment to justify their cost. Any changes to the tax rules would still require further action from Congress.
Bottom line
Warren and other senators are investigating whether Trump's 2025 tax law has allowed major technology companies to save billions on AI investments while federal corporate tax revenue falls.
That doesn't mean your tax bill is about to rise. However, if lower corporate revenue contributes to larger deficits, lawmakers could eventually respond with tax or spending changes that make it harder to keep more cash in your wallet.
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