Single Filers — 2027 Tax Brackets (Projected)
| Taxable Income | Tax Rate | 2026 Upper Limit |
|---|---|---|
| $1 – $12,300 | 10% | $11,925 |
| $12,301 – $49,950 | 12% | $48,475 |
| $49,951 – $106,500 | 22% | $103,350 |
| $106,501 – $203,200 | 24% | $197,300 |
| $203,201 – $258,050 | 32% | $250,525 |
| $258,051 – $645,450 | 35% | $626,350 |
| $645,451+ | 37% | — |
Married Filing Jointly — 2027 Tax Brackets (Projected)
| Taxable Income | Tax Rate | 2026 Upper Limit |
|---|---|---|
| $1 – $24,600 | 10% | $23,850 |
| $24,601 – $99,850 | 12% | $96,950 |
| $99,851 – $212,900 | 22% | $206,700 |
| $212,901 – $406,450 | 24% | $394,600 |
| $406,451 – $516,100 | 32% | $501,050 |
| $516,101 – $1,290,300 | 35% | $1,252,700 |
| $1,290,301+ | 37% | — |
Head of Household — 2027 Tax Brackets (Projected)
| Taxable Income | Tax Rate | 2026 Upper Limit |
|---|---|---|
| $1 – $17,050 | 10% | $16,550 |
| $17,051 – $65,000 | 12% | $63,100 |
| $65,001 – $106,500 | 22% | $103,350 |
| $106,501 – $203,200 | 24% | $197,300 |
| $203,201 – $258,050 | 32% | $250,500 |
| $258,051 – $645,450 | 35% | $626,350 |
| $645,451+ | 37% | — |
2027 Standard Deduction (Projected)
| Filing Status | 2027 Projected | 2026 Confirmed |
|---|---|---|
| Single | ~$15,450 | $15,000 |
| Married Filing Jointly | ~$30,900 | $30,000 |
| Married Filing Separately | ~$15,450 | $15,000 |
| Head of Household | ~$23,150 | $22,500 |
Key 2027 Numbers (Projected)
| Item | 2027 Projected | 2026 Confirmed |
|---|---|---|
| Social Security Wage Base | ~$181,500 | $176,100 |
| 401(k) Employee Limit (Under 50) | ~$24,000 | $23,500 |
| 401(k) Employee Limit (50+) | ~$31,500 | $31,000 |
| Roth IRA Contribution Limit (Under 50) | $7,000 (likely unchanged) | $7,000 |
| Roth IRA Contribution Limit (50+) | $8,000 (likely unchanged) | $8,000 |
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Open Tax Calculator →How the Inflation Adjustment Works
Each year, the IRS adjusts tax bracket thresholds, standard deductions, and contribution limits for inflation using the Chained Consumer Price Index (C-CPI-U). The adjustments prevent "bracket creep" — the phenomenon where wage increases push taxpayers into higher brackets even though their real purchasing power has not changed.
For 2027, we have applied an estimated 3% adjustment to confirmed 2026 limits and rounded to the nearest $50 or $100 as the IRS typically does. Actual 2027 adjustments will depend on the C-CPI-U data from July–September 2026, which is used to calculate the official adjustment factor.
See Also: Confirmed 2026 Limits
For confirmed IRS-published figures, see our 2026 Federal Tax Brackets page.
Frequently Asked Questions
When will official 2027 tax brackets be announced?
The IRS typically announces inflation-adjusted tax figures for the upcoming year in October or November. For 2027 tax year brackets, expect the official announcement in October or November 2026. These will be published in an IRS Revenue Procedure document.
How were these 2027 projections calculated?
These projections apply an estimated 3% inflation adjustment to confirmed 2026 IRS limits, then round to the nearest $50 (for bracket thresholds) or $100 (for larger numbers). This mirrors the methodology the IRS uses, though the actual adjustment will depend on C-CPI-U data from mid-2026.
Will the 7-bracket structure change in 2027?
Barring new legislation, the seven-bracket structure (10%, 12%, 22%, 24%, 32%, 35%, 37%) will remain in place for 2027. The TCJA brackets are permanent provisions — only the thresholds adjust for inflation each year.