Changes in Tax Law: What You Need to Know Now

Key Takeaways

• Recent changes in tax law affect deduction limits, retirement contribution thresholds, and business expense rules simultaneously.
• Proactive tax planning — not reactive filing — is the difference between overpaying and keeping what you've earned.
• Sunset provisions in current legislation mean 2025 and 2026 will bring additional structural shifts that require advance preparation.

Why Changes in Tax Law Demand More Than Annual Attention

Tax law doesn't update on a schedule that aligns with most people's financial calendars. Provisions phase in, sunset clauses activate, and IRS guidance shifts throughout the year — not just at year-end. Treating tax planning as a once-a-year exercise means decisions get made without accounting for rules that may have already changed.

The Tax Cuts and Jobs Act of 2017 (TCJA) introduced sweeping structural changes, many of which are set to expire after 2025. That expiration isn't a distant event — it's close enough that decisions made today about business structure, retirement contributions, and asset purchases carry consequences that extend past the sunset date. Understanding which provisions are temporary versus permanent shapes every meaningful financial decision.

Changes in tax law also interact with each other in ways that aren't always obvious. A higher standard deduction reduces the benefit of itemizing, which in turn affects how charitable giving, mortgage interest, and state and local tax deductions factor into a return. No single change exists in isolation, and treating each rule as a separate variable produces incomplete analysis.

Key Changes in Tax Law Affecting Individuals

The standard deduction for 2024 rose to $14,600 for single filers and $29,200 for married couples filing jointly, reflecting inflation adjustments under the TCJA framework. These adjustments happen annually, but the magnitude matters — a higher standard deduction means fewer taxpayers benefit from itemizing, which changes the calculus around mortgage interest and charitable contributions.

Retirement contribution limits also increased. The IRS raised the 401(k) contribution limit to $23,000 for 2024, with a $7,500 catch-up contribution available for those 50 and older. SECURE 2.0, signed into law in late 2022, introduced additional changes to required minimum distribution (RMD) ages and expanded Roth contribution options for certain employer plans. These aren't minor adjustments — they represent a structural shift in how retirement savings accumulate and get taxed in withdrawal.

Capital gains tax thresholds also adjusted for inflation. The 0% long-term capital gains rate now applies up to $47,025 for single filers and $94,050 for married couples filing jointly in 2024. For taxpayers near these thresholds, strategic timing of asset sales — particularly appreciated securities or real estate — can produce meaningful tax savings without any change in investment strategy.

The SALT deduction cap of $10,000 remains in place through the TCJA's current expiration date. For taxpayers in high-tax states, this cap continues to affect itemization decisions and has created renewed interest in workarounds like pass-through entity (PTE) elections available in many states.

Changes in Tax Law That Directly Impact Business Owners

Section 179 expensing and bonus depreciation rules have shifted meaningfully. Bonus depreciation, which allowed 100% first-year deductions on qualifying property, phased down to 60% in 2024 and continues declining — dropping to 40% in 2025 and 20% in 2026 before expiring entirely. Business owners who purchased equipment assuming full expensing may face a different deduction than anticipated if they haven't tracked the phase-down schedule.

The Section 199A qualified business income (QBI) deduction — which allows eligible pass-through entity owners to deduct up to 20% of qualified business income — is also tied to the TCJA sunset. Unless Congress acts, this deduction disappears after 2025. For S-corporation owners, sole proprietors, and partners in qualifying businesses, this represents a significant change in effective tax rates that requires advance structural planning, not a last-minute adjustment.

Corporate alternative minimum tax (CAMT) returned under the Inflation Reduction Act of 2022, applying a 15% minimum tax on the adjusted financial statement income of corporations with average annual income exceeding $1 billion. While this threshold doesn't affect most small businesses directly, it signals a broader policy direction worth monitoring for mid-market and growing companies.

Research and development (R&D) expense treatment changed starting in 2022, requiring businesses to capitalize and amortize domestic R&D costs over five years rather than deducting them in the year incurred. This shift increased taxable income for many businesses engaged in product development, software creation, or technical innovation — often without any change in actual cash spending.

Planning Strategies That Account for Future Tax Law Changes

The TCJA sunset after 2025 creates a defined planning window. Individual income tax rates are currently lower than they were pre-TCJA, and if Congress doesn't extend the provisions, rates revert to 2017 levels. For taxpayers with flexibility in timing income — business owners, investors, retirees drawing from multiple account types — accelerating income into 2024 and 2025 while rates are lower is a strategy worth modeling against projected future income.

Roth conversions deserve particular attention in this window. Converting traditional IRA or 401(k) balances to Roth accounts generates taxable income now but eliminates future required minimum distributions and produces tax-free growth. With current rates potentially lower than post-2025 rates, the math on conversions has shifted in favor of acting before the sunset.

Estate and gift tax exemptions also face a sunset. The current federal exemption of $13.61 million per individual (2024) reverts to roughly half that amount — adjusted for inflation from the pre-TCJA baseline — if Congress doesn't act. For high-net-worth individuals, 2024 and 2025 represent the last opportunity to use the elevated exemption through gifting strategies, trust structures, or other transfer techniques before the window closes.

State tax planning has grown more complex as states diverge from federal treatment on several issues, including conformity to bonus depreciation, treatment of pass-through entity income, and R&D expense rules. A federal tax strategy built without accounting for state-level treatment can produce unexpected results, particularly for businesses operating across multiple states.

How to Stay Current With Changes in Tax Law Year-Round

The IRS releases guidance through revenue rulings, revenue procedures, notices, and announcements throughout the year — not just during filing season. Significant changes in tax law often come with transition rules, safe harbors, or clarifications that affect how a provision applies in practice. Relying solely on year-end tax prep to absorb these changes means decisions made in January through November may not account for updated rules.

Quarterly estimated tax payments create natural checkpoints for reviewing tax position. Rather than treating estimated payments as a mechanical calculation, each quarterly deadline is an opportunity to assess whether income projections, deduction strategies, and withholding elections still align with current law. Adjustments made in Q2 or Q3 are far more effective than scrambling in December.

Mid-year tax projections — not just year-end reviews — give taxpayers the information needed to make decisions while there's still time to act. A projection completed in June or July identifies whether a Roth conversion makes sense, whether a capital asset sale should happen before or after year-end, and whether a business should accelerate or defer income. By December, most of those decisions have already been made by default.

Changes in tax law don't wait for convenient timing, and neither should the response to them. The planning window created by the TCJA sunset is concrete and time-limited — the decisions made in 2024 and 2025 around income timing, retirement accounts, business structure, and asset transfers will carry consequences well past the expiration date. The taxpayers who come out ahead aren't necessarily the ones with the most complex strategies; they're the ones who reviewed their position while there was still time to act on it.