It would also limit deductions on mortgage interest to the first $250,000 of a mortgage.
Some states also limit deductions by corporations for investment related expenses.
For example, Congress could limit deductions by businesses for health and life insurance.
Under his fearless guidance, the subcommittee had refused to report legislation limiting deductions for oil and gas exploration.
But that raises their adjusted gross income, which, in turn, can limit deductions.
Section 280F was enacted to limit certain deductions on depreciable assets.
Democrats in Congress introduced legislation this year to limit such deductions for executive pay over $1 million.
It would also limit deductions for mortgage interest and curb runaway entitlement programs like Social Security.
Many systems limit particular deductions, even where the expenses directly relate to the business.
The Senate has no such provisions, but it would limit itemized deductions.