Higher Tax Thresholds Projected for 2027 to Help Protect Earnings from Inflation
Washington, Wednesday, 16 September 2026.
Bloomberg Tax projects a 3.2% increase in federal tax bracket thresholds for 2027, driven by inflation. This shift expands tax limits to help prevent bracket creep for American earners.
Economic Drivers and Methodology
Bloomberg Tax & Accounting released its 2027 Projected U.S. Tax Rates report on September 14 and 15, 2026, forecasting a 3.2% inflation adjustment for the upcoming tax year [3][4]. This projected increase is higher than the 2.7% adjustment implemented between 2025 and 2026, reflecting persistent inflationary pressures in the economy [1][3]. The calculations for this cycle utilized an 11-month average for the chained Consumer Price Index because the Bureau of Labor Statistics did not report data for October 2025 [3][4]. These adjustments are incorporated into the framework of the One Big Beautiful Bill Act, which was signed into law on July 4, 2025, and permanently extended the Tax Cuts and Jobs Act rate structure [3][4].
Economic Drivers and Methodology
The primary intent of these annual adjustments is to combat bracket creep, a phenomenon where income rises faster than tax thresholds, potentially increasing tax bills without real purchasing power gains [1][2]. By aligning tax brackets with inflation, the system aims to ensure that cost-of-living raises do not inadvertently push workers into higher tax rates [2]. The 3.2% projection provides corporate leaders, tax professionals, and high-net-worth individuals with an early baseline for multi-year financial and estate planning before official figures are confirmed [1][3].
Specific Threshold Adjustments
Under the forecast, the standard deduction for married couples filing jointly is projected to rise to $33,200 in 2027 from $31,500 in 2026 [2][3]. For single filers, the standard deduction is expected to increase to $16,600 from $15,750 in the current year [2][4]. This represents a percentage increase of 5.397 for married couples, providing additional taxable income buffer for households [3]. Additionally, the income limits for the top 37% tax bracket are projected to reach $793,650 for married joint filers and $661,375 for single filers [1][4].
Specific Threshold Adjustments
Lower tax brackets will also see upward adjustments, with the 10% bracket threshold for single filers rising to $12,800 and $25,600 for married joint filers in 2027 [1][4]. This compares to $12,400 and $24,800 respectively in 2026 [1]. For the 12% bracket, married couples filing jointly could see coverage for taxable income from $25,601 to $104,050, while single filers may see limits from $12,801 to $52,025 [2]. It is important to note that moving into a higher bracket does not mean all income is taxed at the higher rate, as federal income taxes use a progressive system [2].
Advisory and Timeline
The Internal Revenue Service is expected to announce the official 2027 tax filing season brackets in early October 2026 [1][2]. Until that announcement is made, the 2027 bracket and deduction amounts remain estimates based on the available inflation data [2]. Wealth managers and advisors are currently utilizing these September 2026 projections to begin modeling Roth conversions, income deferral strategies, and asset location decisions ahead of the fourth quarter [3]. The tax filing deadline for the 2027 tax season is set for April 15, 2027 [1].