If you haven’t looked closely at the tax code changes taking effect this year, your next filing could come with a painful surprise. The Tax Cuts and Jobs Act (TCJA) provisions that lowered rates for most Americans are sunsetting, and the impact on your wallet is more significant than most people realize.
Here’s what’s changing, who gets hit hardest, and the moves you can still make to protect your bottom line.
The TCJA Sunset Is Here
When Congress passed the TCJA in 2017, most individual tax provisions had an expiration date: December 31, 2025. That means your 2026 income is taxed under a fundamentally different structure than last year’s.
The most immediate change is the return of higher marginal tax rates. The 12% bracket reverts to 15%. The 22% bracket climbs back to 25%. The 24% bracket becomes 28%. And the top rate moves from 37% back to 39.6%. Learn more about 2026 tax bracket changes from the Tax Foundation.
For a married couple filing jointly with $150,000 in taxable income, this shift alone could add roughly $3,000 to $4,500 to their annual tax bill — before accounting for any other changes.
The Standard Deduction Shrinks
The TCJA nearly doubled the standard deduction, which was one of its most popular provisions. In 2025, married couples could claim $30,000. In 2026, that number drops back to approximately $16,300 (adjusted for inflation from the pre-TCJA baseline).
This is the change that will affect the most people. Roughly 90% of taxpayers currently take the standard deduction. When it shrinks by nearly half, many will either face higher taxable income or need to start itemizing deductions for the first time in years.
If you own a home, pay state and local taxes, or make charitable contributions, itemizing might now work in your favor. But it requires more record-keeping and planning than most people are used to.
Personal Exemptions Return — With a Catch
The TCJA eliminated personal exemptions in exchange for the larger standard deduction. Now that the standard deduction is shrinking, personal exemptions return to roughly $5,300 per person. For a family of four, that’s an additional $21,200 in deductions.
On the surface, that sounds like it offsets the reduction in the standard deduction. But the math doesn’t work out evenly for everyone. Single filers and couples without children lose ground because the personal exemption doesn’t fully compensate for the smaller standard deduction.
Three Income Scenarios
To make this concrete, here’s how the changes play out for three common household profiles:
Scenario 1: Single filer earning $75,000. Under the 2025 rules, federal tax liability was approximately $9,100. Under the 2026 reverted brackets and reduced standard deduction, estimated liability rises to roughly $11,400. That’s an increase of about $2,300.
Scenario 2: Married couple, two kids, earning $150,000. Their 2025 tax bill was around $14,800. With the reverted rates, smaller standard deduction, and restored personal exemptions factored in, their 2026 liability comes to approximately $17,600 — about $2,800 more.
Scenario 3: High earner, single, earning $400,000. This taxpayer moves from a 35% marginal rate to 39.6% on income above the threshold. Combined with other changes, their tax increase could exceed $8,000.
The State and Local Tax Deduction Cap
The $10,000 cap on state and local tax (SALT) deductions was one of the TCJA’s most controversial provisions, and its future is uncertain. If the cap expires alongside the rest of the TCJA, taxpayers in high-tax states like California, New York, and New Jersey could see significant relief — potentially deducting $20,000 to $50,000 or more in state and local taxes.
However, Congressional negotiations may extend or modify the cap. This is one area where the final outcome remains unclear as of this writing, so it’s worth monitoring closely.
What You Can Do Right Now
The good news is that several strategies can help offset these increases, but most require action well before December.
Maximize retirement contributions. Every dollar you contribute to a traditional 401(k) or IRA reduces your taxable income. For 2026, the 401(k) contribution limit is $23,500 ($31,000 if you’re 50 or older). See the IRS 2026 tax inflation adjustments and contribution limits. If your employer offers a match, you’re leaving money on the table by not contributing at least to that threshold.
Consider a Roth conversion. If you have traditional IRA assets, converting some to a Roth now lets you pay taxes at current rates rather than potentially higher future rates. The key is converting just enough to fill your current bracket without pushing into the next one.
Bunch your charitable giving. If you’re close to the itemization threshold, consider concentrating two years of charitable donations into one year using a donor-advised fund. This lets you itemize in the high-giving year and take the standard deduction in the off year.
Review your withholding. If your employer is still withholding based on 2025 rates, you could face a large balance due at filing time. Update your W-4 now to reflect the higher 2026 rates and avoid an unpleasant surprise next April.
Accelerate income or deductions strategically. Depending on your situation, it may make sense to pull income into 2026 (if you expect rates to rise further) or push deductions into 2026 (to offset the higher rates). A tax professional can model both scenarios for your specific situation.
The Bottom Line
The 2026 tax landscape represents the most significant shift in individual taxation in nearly a decade. Read the Tax Policy Center’s analysis of the biggest 2026 tax stories. While Congress could still act to extend some or all of the TCJA provisions, waiting for that outcome is risky. The taxpayers who come out ahead will be the ones who plan proactively — adjusting withholding, maximizing deductions, and positioning their income strategically before December 31.
If you haven’t reviewed your tax situation since last year, now is the time. The changes are real, they’re substantial, and they affect nearly every taxpayer in the country.
