Significant business tax provisions in the One, Big, Beautiful Bill Act

The One, Big, Beautiful Bill Act (OBBBA) was signed into law on July 4. The new law includes a number of favorable changes that will affect small business taxpayers, and some unfavorable changes too. Here’s a quick summary of some of the most important provisions.

No tax on car loan interest under the new law? Not exactly

Under current federal income tax rules, so-called personal interest expense generally can’t be deducted. One big exception is qualified residence interest or home mortgage interest, which can be deducted, subject to some limitations, if you itemize deductions on your tax return.

Businesses can still choose to address sustainability

For many years, businesses of all shapes and sizes have at least considered sustainability when running their operations. Many people — including customers, investors, employees and job candidates — care about how a company impacts the environment. And reducing energy use, water consumption and waste generally lowers operational costs.

Tap into the 20% rehabilitation tax credit for business space improvements

If your business occupies a large space and you’re planning to relocate, expand or renovate in the future, consider the potential benefits of the rehabilitation tax credit. This could be particularly valuable if you’re interested in historic properties.

The credit is equal to 20% of the qualified rehabilitation expenditures (QREs) for a qualified rehabilitated building that’s also a certified historic structure by the National Park Service. A qualified rehabilitated building is a depreciable building that has been placed in service before the beginning of the rehabilitation and is used, after rehabilitation, in business or for the production of income (and not held primarily for sale). Additionally, the building must be “substantially” rehabilitated, which generally requires that the QREs for the rehabilitation exceed the greater of $5,000 or the cost of acquiring the existing building.

Act soon: The OBBBA ends clean energy tax breaks

The newly enacted One, Big, Beautiful Bill Act (OBBBA) represents a major move by President Trump and congressional Republicans to roll back a number of clean energy tax incentives originally introduced or expanded under the Inflation Reduction Act (IRA). Below is a summary of the key individual tax credits that will soon be scaled back or eliminated.

What you still need to know about the alternative minimum tax after the new law

The alternative minimum tax (AMT) is a separate federal income tax system that bears some resemblance to the regular federal income tax system. The difference is that the individual AMT system taxes certain types of income that are tax-free under the regular system. It also disallows some deductions that are allowed under the regular system. If the AMT exceeds your regular tax bill, you owe the larger AMT amount.

DOs and DON’Ts to help protect your business expense deductions

If you’re claiming deductions for business meals or vehicle expenses, expect the IRS to closely review them. In some cases, taxpayers have incomplete documentation or try to create records months (or years) later. In doing so, they fail to meet the strict substantiation requirements set forth under tax law. Tax auditors are adept at rooting out inconsistencies, omissions and errors in taxpayers’ records, as illustrated by one recent U.S. Tax Court case. (T.C. Memo. 2024-82)