Changes in Tax Law: What You Need to Know Now

Key Takeaways

• Recent changes in tax law affect deduction limits, bracket thresholds, and retirement contribution rules simultaneously — review all three before filing.
• The expiration of key Tax Cuts and Jobs Act provisions in 2025 creates planning windows that close faster than most taxpayers expect.
• Proactive mid-year tax reviews — not just year-end scrambles — are the most reliable way to avoid surprises when tax law shifts.

Why Changes in Tax Law Demand Proactive Planning

Tax law doesn't sit still. Congress amends the Internal Revenue Code regularly, and each change carries downstream consequences for individuals, small business owners, and self-employed professionals alike. Waiting until April to assess the impact of those changes is a costly habit — by then, most planning opportunities have already closed.

The period between 2023 and 2026 is particularly consequential. Several provisions from the Tax Cuts and Jobs Act (TCJA) of 2017 are scheduled to sunset after December 31, 2025, unless Congress acts to extend them. That includes the near-doubled standard deduction, the reduced individual income tax rates, and the $10,000 cap on state and local tax (SALT) deductions. Each of these affects how much tax a household owes, and each requires a different planning response.

Understanding the timeline of these changes — not just their content — is what separates reactive tax compliance from genuine tax strategy. A CPA who tracks legislative calendars and IRS guidance releases can identify the right moves before the window closes, not after.

Key Changes in Tax Law Affecting Individuals and Families

For individual filers, the most immediate changes in tax law involve inflation adjustments to tax brackets and contribution limits. The IRS updates these figures annually, and the adjustments for 2024 and 2025 are more significant than in prior years due to elevated inflation readings from the previous cycle. The standard deduction for married filing jointly rose to $29,200 for tax year 2024, up from $27,700 in 2023. These shifts alter the calculation of whether itemizing deductions produces a better outcome than taking the standard deduction.

Retirement contribution limits also changed. The 401(k) elective deferral limit increased to $23,000 for 2024, with the catch-up contribution for those 50 and older holding at $7,500. For IRAs, the contribution limit rose to $7,000. These aren't trivial figures — maxing out tax-advantaged accounts is one of the most direct ways to reduce taxable income within the rules Congress has set.

The SECURE 2.0 Act, signed into law in late 2022, introduced a phased rollout of changes that continues through 2025 and beyond. Among the provisions taking effect: expanded access to emergency savings accounts linked to retirement plans, updated required minimum distribution (RMD) ages, and new rules for Roth accounts inside employer plans. Families with inherited IRAs also face stricter distribution timelines under rules that the IRS has continued to clarify through ongoing guidance.

How Changes in Tax Law Affect Small Business Owners

Small business owners face a distinct set of tax law considerations, particularly around the Section 199A qualified business income (QBI) deduction. This deduction — which allows eligible pass-through entities to deduct up to 20% of qualified business income — is one of the TCJA provisions scheduled to expire after 2025. If Congress doesn't act, pass-through businesses will lose a deduction that significantly reduces their effective tax rate.

Depreciation rules are another active area. Bonus depreciation, which allowed businesses to immediately expense 100% of qualifying asset purchases, phased down to 60% in 2024 and is set to drop further in subsequent years. Businesses that relied on full expensing to offset equipment costs need to adjust their capital expenditure timing accordingly. Section 179 expensing remains available as an alternative, though it carries its own limitations and phase-out thresholds.

Payroll tax obligations have also shifted. The Social Security wage base increased to $168,600 for 2024, which affects both employer and employee contributions for higher-earning workers. Self-employed individuals, who pay both halves of FICA taxes, feel this adjustment directly in their quarterly estimated tax calculations. Missing or underestimating those payments triggers underpayment penalties that compound across the year.

The 2025 Sunset: Planning Around the Biggest Tax Law Change in Years

The scheduled expiration of TCJA provisions at the end of 2025 represents the most consequential changes in tax law since the act's original passage. If no legislative extension occurs, individual income tax rates revert to pre-2018 levels, the standard deduction drops roughly in half, personal exemptions return, and the alternative minimum tax (AMT) exemption thresholds contract sharply — pulling more middle-income households into AMT territory.

For high-income earners, the estate and gift tax exemption is particularly significant. The current unified exemption sits near $13.6 million per individual for 2024. After 2025, that figure is projected to drop to approximately $7 million (adjusted for inflation), absent congressional action. Families with taxable estates near or above that threshold have a finite window to make gifts, fund trusts, or restructure ownership in ways that lock in the current exemption amount.

The uncertainty itself is a planning variable. Congress may extend some provisions, modify others, or allow the sunset to proceed entirely. A tax strategy built on only one outcome is fragile. The more durable approach is to model multiple scenarios — what happens if rates revert, what happens if they don't — and make decisions that hold up reasonably well across both paths.

Structuring Your Tax Review Around Changes in Tax Law

Annual tax filing and proactive tax planning are not the same activity. Filing is backward-looking — it accounts for what happened. Planning is forward-looking — it shapes what will happen. When tax law changes at the pace seen over the last several years, the gap between those two activities widens, and the cost of staying in reactive mode grows.

A mid-year tax review typically covers four areas: estimated tax payments (are they calibrated to current-year income and the latest rates?), retirement contribution pace (is the household on track to hit limits before year-end?), deduction timing (should large charitable gifts, medical expenses, or business purchases be accelerated or deferred?), and entity structure (does the current business structure still produce the lowest tax outcome given current law?).

For business owners, that last question deserves particular attention as 2025 approaches. The QBI deduction's potential expiration changes the calculus on whether operating as an S-corporation, partnership, or sole proprietorship produces the best outcome. A CPA who models these comparisons with current-law and post-sunset assumptions gives clients a clearer picture of where they stand under each scenario — not a guess, but a documented projection they can act on.

Changes in tax law don't affect every taxpayer equally, and the difference between those who benefit from them and those who don't usually comes down to timing. The 2025 TCJA sunset is a fixed deadline, not a vague future concern. Business owners with pass-through income, families with taxable estates, and individuals relying on current deduction structures all have specific decisions to make before that date arrives. The most actionable step right now is a documented projection of your tax position under current law versus post-sunset law — with that comparison in hand, every subsequent decision has a foundation.