📌 Quick Answer Summary (Updated Sept 15, 2026)
Projected 2027 federal ordinary income tax brackets (Bloomberg Tax & Thomson Reuters Checkpoint consensus, ~3.2% C-CPI-U adjustment) keep the permanent rates of 10%, 12%, 22%, 24%, 32%, 35%, and 37%.
- Key Single Filer Thresholds: 10% up to $12,800 · 12% to $52,025 · 22% to $109,125 · 24% to $208,325 · 32% to $264,550 · 35% to $661,375 · 37% above $661,375.
- Standard Deduction: ≈ $16,600 (Single) / $33,200 (MFJ) / $24,900 (HoH).
- Long-Term Capital Gains 0% Threshold: Applies up to ≈ $51,050 (Single) / $102,100 (MFJ).
- AMT Exemption: ≈ $93,000 (Single) / $144,700 (MFJ).
- Social Security Wage Base: Projected at ≈ $190,200 (up from $184,500).
- Official IRS Release: Official forthcoming IRS Revenue Procedure (anticipated Autumn 2026) expected late Autumn 2026.
| Tax Rate | Single Filers | Married Filing Jointly (MFJ) | Head of Household (HoH) |
|---|---|---|---|
| 10% | $0 – $12,800 | $0 – $25,600 | $0 – $18,250 |
| 12% | $12,801 – $52,025 | $25,601 – $104,050 | $18,251 – $69,650 |
| 22% | $52,026 – $109,125 | $104,051 – $218,250 | $69,651 – $109,125 |
| 24% | $109,126 – $208,325 | $218,251 – $416,650 | $109,126 – $208,300 |
| 32% | $208,326 – $264,550 | $416,651 – $529,100 | $208,301 – $264,500 |
| 35% | $264,551 – $661,375 | $529,101 – $793,650 | $264,501 – $661,375 |
| 37% | Over $661,375 | Over $793,650 | Over $661,375 |
*Note: Married Filing Separately (MFS) thresholds are generally half of the Married Filing Jointly amounts across all ordinary brackets (with standard statutory rounding applied).
Our projections reflect consensus models published on September 11, 2026 by Bloomberg Tax and Thomson Reuters Checkpoint. Under Internal Revenue Code §1(f)(3), federal tax brackets are indexed using the Chained Consumer Price Index for All Urban Consumers (C-CPI-U) over a 12-month measurement period ending August 31.
- Addressing the 2025 Reporting Anomaly: Due to a data reporting hiatus in late 2025, professional models calculate inflation using an adjusted 11-month annualized Chained CPI-U average (~3.20%).
- Statutory Rounding Rules: By federal statute, all ordinary bracket thresholds are rounded down to the nearest $50 increment (or $25 for Married Filing Separately).
- Official Release Timeline: The official IRS parameters will be published in forthcoming IRS Revenue Procedure (anticipated Autumn 2026) in late Autumn 2026. Historically, consensus models from Bloomberg Tax and Thomson Reuters deviate from final IRS figures by less than $50.
⚡ Quick 2027 Tax Bracket & Relief Estimator
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Tip: If you itemize deductions, enter your estimated taxable income directly after your deductions.
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Did the TCJA Tax Brackets Sunset? (The 2025 Permanent Law)
The single biggest question surrounding the 2027 tax year was whether the individual rate cuts enacted under the 2017 Tax Cuts and Jobs Act (TCJA) would expire at the end of 2025. They did not.
With the enactment of the One Big Beautiful Bill Act (OBBBA / Pub. L. 119-21) in July 2025, Congress made the seven-bracket individual tax structure (10%, 12%, 22%, 24%, 32%, 35%, 37%) permanent. Taxpayers will not revert to the pre-TCJA structure of 15%, 25%, 28%, 33%, and 39.6%.
Consequently, planning for 2027 is not about preparing for a catastrophic rate cliff. Instead, it revolves around annual inflation adjustments to bracket breakpoints and standard deductions to prevent "bracket creep."
Note: Married Filing Separately (MFS) thresholds match half of the Married Filing Jointly figures across all brackets.
Projected Standard Deductions for 2027
The standard deduction indexes annually alongside bracket thresholds. For 2027, the baseline comparison between official 2026 numbers and projected 2027 figures is as follows:
| Filing Status | 2026 Official (Rev. Proc. 2025-32) | 2027 Projected (~3.1% C-CPI-U) |
|---|---|---|
| Single | $16,100 | ~$16,600 |
| Married Filing Jointly | $32,200 | ~$33,200 |
| Head of Household | $24,150 | ~$24,900 |
Historical Comparison: Permanent Law vs. What Sunset Would Have Looked Like
To understand the practical impact of the permanent rate extension, compare the actual permanent structure against the pure TCJA sunset scenario that would have occurred without congressional action:
| Provision | Actual: TCJA Made Permanent (via OBBBA) | Counterfactual: Pure TCJA Sunset |
|---|---|---|
| Individual Tax Rates | 10%, 12%, 22%, 24%, 32%, 35%, 37% (Permanent) | 10%, 15%, 25%, 28%, 33%, 35%, 39.6% |
| Top Marginal Rate | 37% | 39.6% |
| Standard Deduction | Indexed higher (~$16,600 / $33,200) | Roughly halved to pre-TCJA levels |
| Section 199A (QBI Deduction) | 20% pass-through deduction preserved | Expired completely |
Beyond Ordinary Income: 2027 Capital Gains, AMT, NIIT & Payroll Thresholds
While ordinary income brackets widen by approximately 3.2% to relieve bracket creep, high-income earners, investors, and business owners must model the full tax stack. Several high-impact thresholds move under different statutory mechanisms—or remain completely frozen by law.
| Tax Rate | Single Filers / MFS | Head of Household (HoH) | Married Filing Jointly (MFJ) |
|---|---|---|---|
| 0% Rate | $0 – $51,050 | $0 – $68,350 | $0 – $102,100 |
| 15% Rate | $51,051 – $563,200 | $68,351 – $598,400 | $102,101 – $633,600 |
| 20% Top Rate | Over $563,200 | Over $598,400 | Over $633,600 |
*Projected 2027 long-term capital gains and qualified dividends thresholds aligned with Thomson Reuters Checkpoint and Bloomberg Tax consensus (September 2026). The 3.8% NIIT applies on top once MAGI exceeds the fixed statutory thresholds ($200,000 Single / $250,000 MFJ).
| Filing Status | Projected Exemption | Phase-Out Threshold |
|---|---|---|
| Single / Head of Household | $93,000 | $516,200 |
| Married Filing Jointly (MFJ) | $144,700 | $1,032,400 |
| Married Filing Separately (MFS) | $72,350 | $516,200 |
*Projected 2027 AMT exemption amounts and phase-out thresholds based on September 2026 professional consensus. Phase-out rate remains accelerated (50%) under current law.
📊 Key 2027 Benefit & Payroll Caps (Official & Projected Consensus)
- Social Security (OASDI) Wage Base: Projected at ~$190,200 (up from $184,500 in 2026). Earnings above this ceiling are exempt from the 6.2% Social Security tax.
- 401(k), 403(b), & 457 Elective Deferrals: Projected at ~$25,000 – $25,500 (catch-up for age 50+ estimated at ~$8,000–$8,500).
- Defined Contribution Plan Overall Limit (§415(c)): Projected at ~$75,000 (up from $72,000 in 2026), expanding Solo 401(k) deduction capacity.
- Health Savings Account (HSA) Limits (Official Rev. Proc. 2026-24): Self-only $4,500 | Family $9,000 (Age 55+ catch-up fixed at $1,000).
- Net Investment Income Tax (NIIT 3.8%): Statutorily unindexed. Stays fixed at $200,000 (Single) and $250,000 (MFJ).
- Lifetime Estate & Gift Tax Basic Exclusion: Projected at ~$15.4M – $15.5M per individual under permanent OBBBA indexing.
Critical 2027 Tax Planning Traps to Avoid
⚠️ Trap 1: The NIIT & Medicare Surtax Mismatch
Because ordinary tax brackets adjust upward annually while NIIT ($200k/$250k) and Additional Medicare Tax (0.9% over $200k/$250k) are permanently frozen, more upper-middle-income filers fall into these surtaxes each year despite staying inside moderate ordinary tax brackets.
⚠️ Trap 2: Accelerated AMT Phase-Out Under OBBBA
Under the permanent 2025 tax reform, the rate at which the AMT exemption phases out was accelerated to 50% (up from 25%). While phase-out thresholds receive annual inflation adjustments ($516,200 Single / $1,032,400 MFJ in 2027), high earners crossing the line will lose their exemption twice as rapidly.
⚠️ Trap 3: Higher Social Security Ceiling on S-Corp Reasonable Salary
With the OASDI wage base projected to climb to ~$190,200, S-Corporation owner-employees setting competitive reasonable compensation will pay full 12.4% Social Security taxes on a higher slice of wages before reaching the salary distribution arbitrage zone.
Actionable 2027 Planning for Freelancers & Small Business Owners
For independent contractors (1099), solopreneurs, and small business owners, wider 2027 brackets present distinct tax optimization opportunities:
1. Q1 2027 Estimated Tax Calibration (Due April 15, 2027):
Because bracket thresholds will expand by over 3%, your effective tax rate on equivalent revenue will decrease slightly. Model your estimated tax payments using our Quarterly Tax Calculator to avoid over-withholding cash needed for working capital.
2. Safe Harbor Compliance:
To prevent IRS underpayment penalties (Form 2210), ensure your four quarterly payments equal either 100% of your 2026 tax liability (110% if 2026 AGI exceeded $150,000) or 90% of your projected 2027 liability calculated with these updated tables.
3. SEP-IRA & Solo 401(k) Limits:
Defined contribution limits will adjust upward for inflation in 2027. Freelancers earning substantial 1099 revenue should maximize pre-tax contributions to keep top-bracket dollars out of the 24% or 32% marginal tiers.
4. S-Corporation Reasonable Salary Optimization:
With the 20% Section 199A QBI deduction preserved and wider brackets in place, S-Corp owners should review their salary vs. distribution splits. Calculate exact payroll tax savings using our S-Corp Tax Savings Calculator.
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Quick Answer Summary
Projected 2027 federal income tax brackets maintain the permanent 10%, 12%, 22%, 24%, 32%, 35%, and 37% rates (established under the 2025 OBBBA). Based on ~3.1% Chained CPI-U inflation adjustments, the projected single brackets are: 10% up to $12,750; 12% ($12,751–$51,950); 22% ($51,951–$108,950); 24% ($108,951–$208,025); 32% ($208,026–$264,150); 35% ($264,151–$660,450); and 37% over $660,450. Projected standard deductions are ~$16,600 (Single) and ~$33,200 (MFJ). Official IRS figures will be published in late 2026.