The 5 Biggest Tax Concerns Investors Need to Prepare for Heading Into 2026

Big Changes Could Be Looming

As 2025 winds down, investors are looking ahead to a tax landscape that may change more in 2026 than in any year of the past decade. With several provisions from the 2017 Tax Cuts and Jobs Act (TCJA) set to expire, higher-income investors, retirees, and business owners could face a very different environment. Whether you manage a sizable portfolio or simply want to preserve more of your gains, understanding what’s coming will be critical.

Here are the five biggest tax concerns investors should prepare for heading into 2026, and why planning now may save you significantly later.

1. The Potential Return of Higher Income Tax Rates

Unless Congress takes action, many of the tax brackets currently in place will revert to pre-2018 levels starting January 1, 2026. That means:

  • Higher marginal tax rates for most income levels

  • The top rate jumping back up to 39.6%

  • Thresholds for each bracket shifting downward

For high-income investors, the difference could be substantial, especially for those with pass-through business income, equity compensation, rental income, or large RMDs. This puts strategies like income smoothing, Roth conversions, and thoughtful harvesting of gains or losses at the top of the priority list for 2025.

2. Estate and Gift Tax Exemptions Are Set to Drop Dramatically

Perhaps the largest concern for wealthy families: the federal estate and gift tax exemption is scheduled to be cut roughly in half in 2026.

With today’s exemption at over $13 million per person, many families are currently outside estate tax territory. But when the exemption drops back to an estimated ~$6–7 million per person, suddenly a much larger percentage of investors will face estate tax exposure.

For families with:

  • Real estate holdings

  • Concentrated stock positions

  • Business ownership

  • Large retirement accounts

The reduction could translate into a seven-figure tax bill without proactive planning. Strategies like gifting, SLATs, GRATs, and family partnerships may become more valuable than ever in 2025.

3. Capital Gains Management Will Become More Important

Capital gains taxes aren’t scheduled to change in 2026, but the knock-on effects of higher income brackets could push more investors into higher capital gains tiers.

If your taxable income increases due to expiring TCJA provisions, you may unintentionally:

  • Trigger the 20% long-term capital gains rate

  • Fall into the 3.8% Net Investment Income Tax (NIIT) bracket

  • Push gains into higher ordinary income brackets if you sell short-term holdings

Investors with significantly appreciated assets, or who regularly rebalance large taxable portfolios, will need to take a more strategic, multi-year view of gain realization.

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4. The Increased Standard Deduction Is Set to Shrink

The TCJA nearly doubled the standard deduction, which led many investors to stop itemizing entirely. Once that deduction falls in 2026, many taxpayers may once again:

  • Itemize deductions

  • Become more impacted by SALT limitations

  • See reduced tax efficiency from charitable giving strategies

For charitably inclined investors, planning ahead, such as bunching donations in 2025, using donor-advised funds, or exploring qualified charitable distributions (QCDs), could restore lost tax efficiency.

5. Retirement Withdrawals May Become More Tax-Heavy

Higher tax brackets starting in 2026 could increase the tax burden on distributions from:

  • IRAs

  • 401(k)s

  • 403(b)s

  • SIMPLE and SEP accounts

Investors approaching retirement or already taking required minimum distributions (RMDs) are particularly vulnerable. Many are now considering:

  • Accelerating withdrawals in 2025

  • Performing Roth conversions while rates are still relatively low

  • Reassessing their long-term withdrawal strategy

When rates rise, once-small withdrawal decisions can compound into significant lifetime tax differences.

Final Thoughts

2026 has the potential to reshape the tax landscape for investors more than any year in recent memory. The investors who benefit most will be the ones who start planning in 2025, while current rates, deductions, and exemptions are still in place. Multi-year tax planning, strategic timing of income and gains, and thoughtful estate considerations could make the difference between keeping more of your wealth or handing it over unnecessarily.

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