Navigating the 2026 Tax Sunset: Strategic Planning After TCJA

The American tax landscape is standing on the precipice of one of the most significant shifts in decades. The Tax Cuts and Jobs Act (TCJA) of 2017, which fundamentally altered individual and corporate tax structures, contains a series of sunset provisions scheduled to expire on December 31, 2025. Unless Congress acts to extend these provisions, January 1, 2026, will usher in a return to pre-2018 tax rules, albeit adjusted for inflation.

For high-net-worth individuals, business owners, and proactive taxpayers, the next 24 months represent a critical window for strategic financial maneuvering. Understanding the nuances of the post-TCJA era is essential for preserving wealth and minimizing tax liability. This guide explores the major changes coming in 2026 and the strategies you can implement today to prepare.

Understanding the 2026 Tax Cliff

The TCJA was structured with temporary individual provisions to comply with Senate budget reconciliation rules. While corporate tax cuts were made permanent, the relief provided to individuals and pass-through entities was designed to expire. This creates a "tax cliff" where most taxpayers will see an automatic increase in their effective tax rates without any new legislation being passed.

The Return of Higher Individual Tax Rates

Perhaps the most visible change will be the reversion of tax brackets. The current TCJA brackets—10%, 12%, 22%, 24%, 32%, 35%, and 37%—will revert to the old structure: 10%, 15%, 25%, 28%, 33%, 35%, and 39.6%. For many middle and high-income earners, this represents a 3% to 4% increase in their marginal tax rate. For example, the current 24% bracket, which covers a wide range of income for professionals, will jump to 28%.

The Standard Deduction and Personal Exemptions

The TCJA nearly doubled the standard deduction while eliminating personal exemptions. In 2026, the standard deduction will be cut roughly in half (adjusted for inflation), and personal exemptions will return. While this may benefit large families, many single filers and couples with fewer dependents may find that their taxable income increases significantly as the standard deduction shrinks.

Key Strategies for Income Acceleration

Because tax rates are widely expected to be higher in 2026 than they are in 2024 or 2025, the traditional tax wisdom of "defer income, accelerate deductions" is being flipped on its head for many taxpayers.

Accelerating Income into 2024 and 2025

If you expect to be in a higher tax bracket in 2026, it may make sense to pull income into the current years. This could include:

• Exercising non-qualified stock options.
• Taking bonuses in December 2025 rather than January 2026.
• Selling appreciated assets to lock in current capital gains rates, especially if there is a risk of capital gains rate changes.
• Distributing funds from traditional IRAs or 401(k)s if you are of age and in a lower bracket now than you will be in 2026.

The Roth Conversion Window

One of the most powerful tools available right now is the Roth IRA conversion. By converting a traditional IRA to a Roth IRA in 2024 or 2025, you pay taxes at today’s lower rates. Once the funds are in the Roth account, they grow tax-free, and qualified distributions are tax-free. This effectively "locks in" the current TCJA rates for a portion of your retirement savings, shielding that wealth from the 2026 increases.

Business Owner Considerations: The Death of Section 199A

For small business owners and partners in pass-through entities (S-corps, LLCs, Partnerships), the expiration of the Section 199A Qualified Business Income (QBI) deduction is a major concern. Currently, eligible business owners can deduct up to 20% of their qualified business income from their taxes. This deduction is scheduled to vanish entirely in 2026.

Strategic Moves for Pass-Through Entities

Business owners should consult with tax professionals to evaluate if their current entity structure remains optimal. While the 21% flat corporate tax rate for C-corps is permanent, the loss of the 20% QBI deduction might make the C-corp structure more attractive for some businesses that intend to reinvest profits rather than distribute them. Additionally, accelerating business income and equipment purchases before the sunset could maximize the utility of current deductions.

Estate Planning: The Sunsetting Exemption

The TCJA significantly increased the lifetime gift and estate tax exemption. In 2024, an individual can transfer up to $13.61 million ($27.22 million for married couples) without triggering federal estate or gift taxes. On January 1, 2026, this exemption is expected to drop by approximately 50%, likely landing around $7 million per individual after inflation adjustments.

"Use It or Lose It" Gifting

For individuals with estates exceeding $7 million, the next two years are a "use it or lose it" period. The IRS has clarified that taxpayers who take advantage of the higher gift tax exclusion now will not be adversely impacted when the exclusion drops in 2026. Strategies to consider include:

• Establishing Spousal Lifetime Access Trusts (SLATs).
• Funding Irrevocable Life Insurance Trusts (ILITs).
• Making large direct gifts to heirs or into Dynasty Trusts.

By gifting assets now, you remove not only the current value from your taxable estate but also all future appreciation on those assets.

The Return of SALT and Miscellaneous Deductions

While many changes in 2026 involve tax increases, there are a few "silver linings." The $10,000 cap on the State and Local Tax (SALT) deduction is scheduled to expire. For residents of high-tax states like California, New York, and New Jersey, the ability to once again deduct the full amount of state income and property taxes could provide significant relief, potentially offsetting some of the other rate increases.

Furthermore, miscellaneous itemized deductions (such as investment fees and unreimbursed employee expenses), which were suspended by the TCJA, are slated to return. Taxpayers should prepare to track these expenses more diligently starting in 2026.

Conclusion: Proactive Planning is Mandatory

The transition to the post-TCJA tax environment is not a matter of "if" but "when." While political shifts could lead to new legislation that extends some provisions, relying on Congressional action is a risky financial strategy. The most prudent approach is to plan based on the law as it is currently written.

Successful tax planning for 2026 requires a multi-year perspective. You must balance the immediate cost of accelerating income or making large gifts against the long-term benefit of avoiding higher future rates and lower exemptions. Because these strategies often involve complex legal instruments like trusts or significant liquidity events, starting the conversation with your financial advisor and tax professional today is essential to ensure you are positioned for success when the sunset arrives.