What did the 2025 tax law actually change for business owners?

The 2025 tax law rewrote the planning playbook for business owners. If you’re still operating under pre-2025 assumptions about what you can deduct and when, you’re probably leaving money unclaimed.

Bonus depreciation has been restored to 100 percent and made permanent. It had been phasing down year by year and was scheduled to continue declining. Now a business buying equipment or vehicles can deduct the full cost in the year of purchase. This single change affects timing decisions on major purchases for every business that acquires assets.

The Section 179 immediate expensing limit has been roughly doubled into the multi-million dollar range. Combined with restored bonus depreciation, the planning question is no longer whether you can deduct a major purchase now but which method serves you better given your income that year.

The 20 percent qualified business income deduction for pass-through entities has been made permanent. It was set to expire, and now it’s not expiring. The income thresholds and service-business limitations still apply, but the deduction itself is no longer a sunset item you have to plan around.

The state and local tax deduction cap has been raised substantially for a window of years. The $10,000 limit that pinched business owners in higher-tax states since 2018 is now higher, though the increase applies for a limited period. Verify the specific numbers and timeline when you’re planning.

Domestic research and experimentation costs can be expensed again. Since 2022, businesses had to capitalize and amortize these costs over five years. The 2025 law restores immediate expensing. For any business with meaningful R&D spending, this changes cash flow and taxable income substantially.

On the individual side, new deductions cover tip income and overtime pay. If you run a restaurant, hotel, or other tipped-employee business, your team’s tax picture changed. Employees working overtime see a reduced tax burden on those hours.

These provisions interact with each other and with your specific situation. An S corporation owner buying equipment faces different planning than a sole proprietor with significant QBI, and both face different planning than a partnership with R&D spending. The stakes run from a few thousand dollars to six figures depending on the size and nature of the business.

Most business owners have someone who files their returns but no one actively advising on how to use these changes. That’s the gap where real savings get lost. Year-round tax planning exists to catch these opportunities before the year closes rather than report them after it’s too late.

If you haven’t had a planning conversation about the 2025 law changes, now is the time. Our tax and accounting services are built planning-first, which means reviewing what these provisions mean for your business is part of how we work. Book a consultation to see where you stand.