Changes in Tax Law: What You Need to Know Now

Key Takeaways

• Recent changes in tax law affect deductions, brackets, and business structures differently — a one-size-fits-all approach creates unnecessary exposure.
• Proactive tax planning, not reactive filing, is the difference between minimizing liability and overpaying year after year.
• Understanding expiring provisions and pending legislation allows taxpayers to make informed decisions before deadlines close their options.

Why Changes in Tax Law Demand Year-Round Attention

Tax law is not a static document — it's a living body of rules shaped by legislation, IRS guidance, court decisions, and regulatory updates. Treating it as something to review only in April means missing the planning windows that actually reduce tax liability.

The Tax Cuts and Jobs Act of 2017 (TCJA) introduced sweeping changes to individual and business taxation, many of which are scheduled to expire after 2025. That expiration isn't a distant abstraction — it's a planning horizon that affects decisions made right now about retirement contributions, business entity structure, capital asset purchases, and income timing.

Waiting for Congress to finalize legislation before acting is a strategy that consistently costs taxpayers money. The taxpayers who fare best are those who build contingency plans around multiple legislative outcomes rather than betting on a single result.

Key Changes in Tax Law Affecting Individual Filers

The standard deduction, which the TCJA nearly doubled, is set to revert to pre-2017 levels (adjusted for inflation) if Congress doesn't act before the end of 2025. For millions of filers who stopped itemizing because the standard deduction made it unnecessary, that reversion could change the math on charitable giving, mortgage interest, and state and local tax deductions.

The $10,000 cap on state and local tax (SALT) deductions remains one of the most debated provisions from the TCJA. High-income earners in states with significant income and property taxes have felt this cap acutely. Several legislative proposals have floated adjustments to this limit, but none have cleared Congress — meaning taxpayers in affected states need to plan around the current cap while staying alert to any movement.

The alternative minimum tax (AMT) exemption thresholds were also raised under the TCJA. If those thresholds revert, a broader group of filers will face AMT exposure again, particularly those with significant incentive stock options, large deductions, or specific types of income. Running an AMT projection now — rather than discovering the liability at filing time — gives taxpayers room to make adjustments.

Estate and gift tax exemptions follow the same expiration timeline. The current federal exemption sits above $13 million per individual. A return to pre-TCJA levels would cut that figure roughly in half, making wealth transfer planning a time-sensitive priority for families with taxable estates.

Business Tax Changes Worth Monitoring Closely

The 20% qualified business income (QBI) deduction under Section 199A has been one of the most impactful provisions for pass-through entities — sole proprietors, partnerships, S corporations, and certain trusts. This deduction is also tied to the TCJA's 2025 expiration date. Business owners who have structured their compensation and entity type around the QBI deduction need to model what their effective tax rate looks like without it.

Bonus depreciation, which allowed businesses to immediately deduct 100% of the cost of qualifying property, has already begun phasing down. The phase-down schedule reduces the deduction by 20 percentage points per year, meaning the deduction is no longer 100% and continues to shrink. Businesses planning significant capital expenditures need to factor current depreciation rates into their purchasing timelines.

The corporate tax rate, set at 21% under the TCJA, has been a recurring target in legislative proposals. While no rate change has been enacted, the ongoing discussion means businesses with flexibility in income timing or entity structure should understand how rate changes would affect their tax position across multiple scenarios.

Research and development (R&D) expense treatment changed significantly starting in 2022. Rather than deducting R&D costs in the year incurred, businesses are now required to amortize those costs over five years (15 years for foreign research). This shift has increased taxable income for companies with substantial R&D activity, and legislative efforts to reverse the change have stalled repeatedly.

How to Respond to Tax Law Changes Without Overreacting

Tax law uncertainty is not a reason to make dramatic structural changes based on what might happen. Restructuring a business, accelerating large income events, or making major charitable contributions solely because of pending legislation can create more problems than the anticipated law change would have caused.

The more productive approach is scenario modeling — building out the financial implications of two or three plausible legislative outcomes and identifying which decisions remain sound across all scenarios. A strategy that works whether the TCJA provisions expire, get extended, or get partially modified is more durable than one that requires a specific outcome.

Timing flexibility is one of the most underused tools in tax planning. Decisions about when to recognize income, when to take deductions, and when to execute asset transfers can often be shifted by months or years without changing the underlying economic substance. That flexibility has real dollar value when tax rates or deduction limits are in flux.

Working with a CPA who tracks legislative developments as part of their practice — not just at filing time — is the structural difference between reactive and proactive tax management. Tax law changes don't announce themselves with enough lead time for last-minute adjustments to be effective.

Provisions Already in Effect That Many Taxpayers Miss

Not all significant tax law changes are tied to the TCJA expiration. Several provisions already in effect continue to be underutilized or misunderstood.

The SECURE 2.0 Act, signed into law in December 2022, introduced changes to required minimum distributions (RMDs), catch-up contribution limits, and employer plan matching rules. The RMD age was raised to 73 and is scheduled to increase to 75 in 2033. For taxpayers approaching retirement, the extended window before mandatory distributions begin creates planning opportunities around Roth conversions and income sequencing.

Energy-related tax credits expanded under the Inflation Reduction Act of 2022 remain in place and apply to a wide range of residential and commercial decisions — from electric vehicle purchases to home energy efficiency upgrades and commercial clean energy investments. These credits have income limitations, phase-outs, and specific qualification requirements that affect whether they deliver the expected benefit.

The IRS has also adjusted penalty structures, estimated tax thresholds, and withholding guidance in recent years. Taxpayers who set their withholding once and leave it unchanged for multiple years frequently find themselves facing underpayment penalties that a quarterly review would have prevented.

Tax law changes reward the taxpayers who treat planning as an ongoing discipline rather than an annual event. The provisions expiring after 2025, the R&D amortization rules already in effect, the SECURE 2.0 retirement changes, and the energy credit landscape all present specific planning opportunities — but those opportunities have deadlines attached. The most actionable step for any taxpayer facing uncertainty is a current-year projection that maps their actual numbers against both the law as it stands today and the most likely alternative outcomes. That projection, not a general awareness of what might change, is what converts tax law knowledge into a lower tax bill.