A deduction lowers the income your business is taxed on. The saving is the fee multiplied by your tax rate.
Take the Master Manager Program at $995 per learner. A C corporation, taxed at the flat 21% federal rate, saves about $209 in federal tax on each seat. That brings the after-tax cost to about $786.
In a sole proprietorship, partnership or S corporation, the deduction reduces the income the owners report, so the saving depends on each owner's own rate.
A deduction works differently from a tax credit, which comes straight off the tax bill. Program fees don't qualify for the education credits. The Q&A below explains why.