IRS Adjusts 2027 Tax Brackets: Estate Exclusion Climbs to $15.48 Million

High-income taxpayers and business owners are looking at a significantly revised landscape for the 2027 tax year, as the Internal Revenue Service has officially released its annual inflation-adjusted figures. These adjustments, detailed in Revenue Procedure 2026-35, provide a crucial roadmap for financial planning, offering more room for earnings before top federal tax rates take hold. As inflationary pressures continue to reshape the economy, the IRS updates ensure that taxpayers are not inadvertently pushed into higher tax brackets simply due to cost-of-living salary increases.

The new guidance confirms that the threshold for the top 37% tax bracket has been raised. For married couples filing jointly, this top rate will now apply to taxable income exceeding $793,650. For single filers, the threshold has been pushed to $661,375. These adjustments are largely in line with earlier projections provided by Bloomberg Tax, which had estimated an inflationary shift of approximately 3.2% earlier this fall. The actual IRS figures differ from these estimates by only a marginal rounding error, confirming that the agency’s calculations remain consistent with the broader economic environment.

The Impact on Top Earners and Tax Planning

Beyond the top bracket, the IRS has recalibrated the thresholds for the 35% and 32% rates. For joint filers, the 35% bracket now begins at taxable income over $529,100, while the 32% rate kicks in above $416,650. Single filers will see these thresholds set at $264,550 and $208,325, respectively.

For many professionals, these shifts are more than just numbers on a page; they represent a meaningful change in how year-end financial decisions are handled. The 32% tax band for single filers is particularly narrow, covering only about $56,000 of taxable income. Because this bracket is so compressed, a single client can easily be pushed through two different tax brackets by a standard year-end bonus, a large Roth conversion, or the proceeds from a partial business sale. While joint filers enjoy roughly double the width in their brackets, the risk of "bracket creep" remains a constant consideration for those managing high-income portfolios.

The complexity of these shifts is further compounded by the existing limitations on itemized deductions for those in the 37% bracket. Following the tax laws established in 2025, there is a cap on the benefit of these deductions for high earners. Consequently, advisors are increasingly recommending that clients revisit the timing of large charitable contributions. As income levels continue to rise to keep pace with inflation, taxpayers who have not updated their financial strategies since the IRS last reset these brackets for 2026 may find themselves falling into the top tax bracket for the first time, necessitating a more proactive approach to tax-loss harvesting and charitable planning.

Navigating Capital Gains and Trust Taxation

The 2027 adjustments also provide clarity on the taxation of long-term capital gains, which remain a primary concern for investors. For joint filers, the 0% long-term capital gains rate now applies to taxable income up to $102,100. The 15% rate applies to income up to $633,600, with the 20% rate taking effect for income above that level. For single filers, the thresholds are $51,050 and $563,200.

Trusts, however, continue to be treated as an outlier in the tax code, often facing much harsher treatment than individual taxpayers. A non-grantor trust reaches the 37% ordinary income rate once its taxable income exceeds just $16,500, and it hits the 20% capital gains rate at $16,750. This significant disparity often forces trustees to make difficult decisions regarding the timing and volume of distributions. Given the low thresholds, it is often prudent to model the tax implications of distributing income to beneficiaries in lower brackets before that income accumulates within the trust and becomes subject to the highest possible tax rates.

Furthermore, clients holding incentive stock options must be mindful of the alternative minimum tax (AMT). The AMT exemption for joint filers has been increased to $144,700 for 2027, with the phase-out range beginning at $1,031,900. Failure to run updated AMT projections can result in unexpected tax liabilities for executives and employees who exercise large amounts of stock options.

Evolving Benefits for Business Owners

The 2027 IRS guidance provides notable relief for the business community, particularly regarding deductions and expensing limits. The Qualified Business Income (QBI) deduction, which has been a staple of tax planning for pass-through entities, will see its phase-in limits adjusted upward. For joint filers, the phase-in range now begins at $416,600 and ends at $566,600. For most other filers, the range is $208,300 to $283,300. This is a critical area of focus for owners of professional practices—including attorneys, consultants, and physicians—who are most likely to have income falling within these specific ranges and are therefore most sensitive to the phase-in rules.

Business investment is also encouraged through higher Section 179 expensing limits. For 2027, the limit has been raised to $2,640,000, up from $2,560,000 in the previous year. This allows businesses to write off a larger portion of the cost of qualifying equipment and property placed in service during the tax year. However, the benefit begins to shrink dollar-for-dollar once the total investment in qualifying property exceeds $4,230,000.

Perhaps the most significant development for startup founders and business owners is the indexing of Qualified Small Business Stock (QSBS) limits under Section 1202. Following the 2025 legislative changes, these figures are now tied to inflation. In 2027, the per-issuer gain exclusion cap will rise to $15,480,000, and the gross-asset ceiling for companies to qualify for this status will increase to $77,390,000. For entrepreneurs planning an exit or a liquidity event in the coming years, these higher thresholds provide a greater incentive to hold onto qualifying stock, but they also require careful verification of the company’s asset levels to ensure continued eligibility.

Estate Tax Exclusions and Gifting Strategies

For individuals focused on multi-generational wealth transfer, the estate tax exclusion has seen a meaningful increase. For the estates of those who pass away in 2027, the basic exclusion rises to $15,480,000, up from the $15 million level seen previously. This same figure applies to the generation-skipping transfer tax exemption. Because these exemptions can be aggregated for married couples, a husband and wife can effectively shelter a combined $30.96 million from federal estate taxes.

The annual gift exclusion has also been adjusted to keep pace with inflation, rising to $20,000 per recipient from $19,000. This provides a more flexible tool for families looking to reduce the size of their taxable estates incrementally. By utilizing gift splitting, couples can transfer up to $40,000 to each child or grandchild annually without ever tapping into their lifetime estate tax exclusion.

In announcing these changes, IRS leadership emphasized the broader benefits of the adjustments. "American individuals and businesses will see increased tax benefits next tax year ranging from an increase in the standard deduction and the Child Tax Credit for families, and a boost to the amount that can be expensed by businesses," said IRS Chief Executive Officer Frank J. Bisignano. These adjustments, coupled with the new benefits under the Working Families Tax Cuts (WFTC), aim to provide a buffer for taxpayers against the ongoing effects of inflation. As the 2027 tax year approaches, taxpayers are encouraged to consult with their financial advisors to integrate these updated thresholds into their long-term planning, ensuring they maximize the available deductions and credits while minimizing exposure to the highest tax brackets.