Federal income tax is not a flat rate. The U.S. uses a progressive system where only the income within each layer is taxed at that layer's rate. For 2026, there are seven brackets ranging from 10% to 37%, with thresholds set by IRS Rev. Proc. 2025-32.
How Marginal Brackets Actually Work
Each bracket applies only to the income within its range. If you are in the 22% bracket, that rate applies solely to the income between $48,475 and $103,350. Everything below $48,475 is still taxed at 10% and 12%.
Example: A single filer with $75,000 of taxable income owes:
- 10% on $11,925 = $1,192.50
- 12% on $36,550 (the range from $11,926 to $48,475) = $4,386.00
- 22% on $26,525 (the range from $48,476 to $75,000) = $5,835.50
- Total tax: $11,414. Effective rate: 15.2%.
The 22% rate applies to just $26,525 of income, not the full $75,000.
2026 Tax Brackets: Single Filer vs. Married Filing Jointly
Source: IRS Rev. Proc. 2025-32. Head of Household thresholds fall between Single and MFJ.
How the Standard Deduction Affects Your Bracket
Before the brackets apply, most filers subtract the standard deduction from adjusted gross income. For 2026, the standard deduction is:
- Single: $16,100
- Married Filing Jointly: $32,200
- Head of Household: $24,150
- Age 65+ or blind: Add $2,050 (single/HoH) or $1,650 per qualifying spouse (MFJ)
This means a single filer needs gross income above about $32,000 before any income touches the 12% bracket (after factoring in the standard deduction). See our standard deduction vs. itemizing guide for when itemizing produces a better outcome.
Strategies to Reduce Your Bracket Exposure
A few moves can legally reduce taxable income and keep more of your earnings in lower brackets:
- Pre-tax retirement contributions: 401(k) and traditional IRA contributions reduce taxable income dollar for dollar, potentially pushing income from the 22% into the 12% bracket
- Health savings account (HSA) contributions: Triple-tax-advantaged and deductible above the line
- Timing capital gains: Long-term gains are taxed at 0% if taxable income stays below $47,025 (single) or $94,050 (MFJ) in 2026
- Roth conversions in low-income years: Converting traditional IRA funds while in a lower bracket locks in today's rates before income rises
Have questions about how the 2026 brackets affect your situation? Contact TS CPA for a free consultation. We respond within the same day.