What the 1% deductibility floor means for corporate giving in 2026

Buried in last year's federal tax legislation is a provision that quietly rewires corporate philanthropy: beginning with the 2026 tax year, corporations may deduct charitable contributions only to the extent they exceed one percent of taxable income. Give less than that, and the deduction is zero. Sector estimates put the potential reduction in corporate giving at several billion dollars a year.

What the floor actually changes

For decades, every corporate charitable dollar was deductible from the first dollar up to the ten-percent ceiling. The new floor inverts the logic at the bottom: a company giving half a percent of taxable income now gets nothing. The rational responses, already being recommended by major DAF sponsors and tax advisors, are two:

• Bunching. Concentrate two or three years of giving into a single tax year to clear the floor, then give little in the off years — typically by parking the bunched contribution in a foundation or donor-advised fund that smooths disbursement.
• Scrutiny. With the tax subsidy reduced for modest givers, CFOs are asking a sharper question: if this spend isn't fully deductible anyway, what exactly is it buying?

The collision nobody planned

Here's the tension worth watching: the floor pushes giving toward lumpy, vehicle-mediated, less-visible patterns — at precisely the moment boards, communities, and claims regulators are demanding more attribution, more locality, and more proof. Tax law is optimizing for opacity while governance pressure demands evidence. Most companies haven't noticed these two forces point in opposite directions.

What thoughtful givers are doing

The emerging playbook separates the tax event from the impact event. Fund the vehicle on whatever schedule the tax code rewards — bunched, if that's what the floor requires. Then disburse on the schedule the work rewards: steady, recurring, multi-year commitments that nonprofits can build on, with outcomes attributed and documented as the dollars land.

The companies that get this right will bank the deduction and the evidence. The ones that don't will discover that "it's in our DAF" is an answer that satisfies the tax return and no one else — not the board asking what changed, not the mayor asking what you've done here lately, and not the employees who want to be proud of where they work.