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The Internal Revenue Service (IRS) has announced the new federal tax brackets and standard deduction amounts applicable to the 2027 tax year in the United States. The announcement, published on November 5, 2026, confirms that marginal rates remain unchanged, while income thresholds have been raised to account for inflation. This annual update is a standard procedure carried out by the federal agency each year to adjust tax parameters to changes in prices and wages in the country.
Why it matters
The update to income thresholds serves to prevent the involuntary shifting of taxpayers into higher tax brackets, a phenomenon known as ‘bracket creep’. By increasing income thresholds alongside prices and wages, the system maintains the progressivity of taxation without penalizing those who have not seen a real increase in their purchasing power. For American citizens, this means that a larger portion of their income will be taxed at lower rates compared to the previous year, assuming equal nominal earnings. This mechanism is fundamental to ensuring that inflation does not automatically result in an increased effective tax burden on middle- and low-income earners.
The numbers
According to data provided by Kiplinger, the standard deduction for single filers and married individuals filing separately is set at $16,600. For married couples filing jointly, the amount rises to $33,200, while for heads of household, the deduction is $24,950. Marginal tax rates remain unchanged from the current tax year: 10%, 12%, 22%, 24%, 32%, 35% and 37%. MarketWatch highlights that the bracket adjustment for 2027 is more pronounced than in the current year, due to persistent inflation. This steeper adjustment reflects recent economic changes that have influenced costs and incomes in the preceding period.
What remains to be understood
Sources agree on the stability of tax rates and the increase in standard deductions. No further details emerged regarding specific modifications to medical expense or mortgage interest deductions, which are not the subject of this specific release. Tax returns for the 2027 tax year will typically be filed at the beginning of 2028, when taxpayers can verify the concrete impact of the new thresholds on their final tax burden.
Sources: CNBC Top News, Kiplinger, MarketWatch.
This article is for informational purposes only and does not constitute financial advice or an investment recommendation.
* Content created with the assistance of artificial intelligence systems.