Retirement Tax Bracket Calculator
Estimate your federal tax bracket in retirement based on planned withdrawals from Social Security, pre-tax retirement accounts, Roth, and taxable brokerage.
US Income Tax Calculator
Working bracket walker with full retirement income modeling.
Open US Income Tax Calculator →About this tool
A retirement tax bracket calculator estimates your federal marginal and effective tax rates in retirement by mapping each income source (Social Security, Traditional 401(k) and IRA withdrawals, Roth distributions, brokerage dividends, and long-term capital gains) onto its specific tax treatment, then walking the result through the 2026 ordinary-income and preferential-rate brackets. Retirees almost never sit cleanly in one bracket: ordinary income from pre-tax accounts stacks on top of taxable Social Security, while qualified dividends and LTCG sit on a separate parallel rate schedule.
The output you actually plan against is the marginal rate, not the effective rate. Marginal tells you the cost of the next $1,000 you withdraw and drives every Roth conversion, Required Minimum Distribution (RMD) timing, and tax-loss harvesting decision. Effective just tells you the average rate you paid last year, which is less useful for forward planning.
How it works
Provisional income = AGI + (0.5 x SS) + tax-exempt interest Taxable SS portion = 0%, 50%, or 85% based on provisional income vs thresholds Taxable income = Wages + Trad withdrawals + Taxable SS + Interest - Std Deduction Federal tax = walk taxable income through 2026 ordinary brackets LTCG/QDiv tax = walk preferential-rate stack on top of ordinary income Marginal rate = bracket the NEXT $1,000 of ordinary income would fall into Effective rate = Total tax / Total gross income
- Roth withdrawals = excluded from AGI and provisional income; do not push SS into taxability.
- Traditional 401(k) / IRA withdrawals = 100 percent ordinary income; included in AGI.
- Social Security = 0, 50, or 85 percent taxable depending on the provisional-income formula.
- Brokerage LTCG / qualified dividends = preferential-rate stack (0/15/20 percent), but counted in AGI for SS purposes.
- Standard deduction 2026 = $15,750 single, $31,500 MFJ, plus $2,000 extra age-65 bonus per spouse.
Worked example
Consider a single 67-year-old in 2026 with $30,000 of Social Security, $40,000 in pre-tax 401(k) withdrawals, $10,000 from a Roth IRA, and $8,000 of long-term capital gains:
- Provisional income: $40,000 (Trad) + $8,000 (LTCG) + 0.5 x $30,000 (SS) = $63,000.
- Taxable SS: Above the $34,000 single threshold, so 85 percent of SS is taxable = $25,500.
- Ordinary taxable income: $40,000 + $25,500 - $17,750 (std + age 65 bonus) = $47,750.
- Ordinary federal tax (2026 single): $1,192.50 on first $11,925 at 10% + $4,386 on next $36,550 at 12% = approximately $5,540.
- LTCG tax: $8,000 sits in the 0 percent LTCG bracket (taxable income under $48,350), so $0 owed.
- Total federal tax: approximately $5,540.
- Effective rate: $5,540 / $88,000 = 6.3 percent.
- Marginal rate: next $1,000 of 401(k) withdrawal stays in the 12 percent ordinary bracket BUT each $1 also makes $0.85 more of SS taxable, so the actual marginal rate is roughly 22.2 percent (the tax torpedo).
2026 federal tax brackets for retirees (single filer)
| Bracket | Ordinary income (10/12/22%) | LTCG / Qualified Div | Notes |
|---|---|---|---|
| 10% | $0 to $11,925 | 0% up to $48,350 | Covered by std deduction for many retirees |
| 12% | $11,925 to $48,475 | 0% | Sweet spot for Roth conversions |
| 22% | $48,475 to $103,350 | 15% kicks in at $48,350 | Most middle-income retirees land here |
| 24% | $103,350 to $197,300 | 15% | Common at RMD age for high savers |
| 32% | $197,300 to $250,525 | 15% | NIIT 3.8% surtax applies above 200K |
| 35% | $250,525 to $626,350 | 15% to $533,400 | IRMAA Medicare premium surcharge zone |
| 37% | Above $626,350 | 20% above $533,400 | Highest IRMAA Part B/D premium |
Common mistakes
- Confusing marginal with effective. A 6 percent effective rate can sit on top of a 22 percent marginal rate. Always plan future withdrawals against marginal.
- Ignoring the SS tax torpedo. Each $1 of Traditional withdrawal makes $0.50 to $0.85 of SS taxable, so true marginal rates in the SS phase-in zone can be 22.2, 27.0, or 40.7 percent (not the headline 12, 22, or 24 percent).
- Forgetting IRMAA Medicare surcharges. AGI above $106,000 single ($212,000 MFJ) in 2026 triggers higher Medicare Part B and D premiums. The cliffs are step functions, so $1 of extra income can cost $700+/yr in surcharges.
- Skipping state tax. Nine states (FL, TX, NV, WA, TN, AK, WY, SD, NH) have no income tax. California taxes Roth withdrawals as ordinary income for early distributions. Always layer state on top.
- Underestimating RMDs. A $1.5M pre-tax IRA at age 73 forces a 3.77 percent first-year RMD = $56,550. This is taxable as ordinary income regardless of whether you need it.
- Missing the QCD strategy. Qualified Charitable Distributions up to $108,000 (2026) directly from an IRA satisfy RMDs and are excluded from AGI, dropping you below SS and IRMAA thresholds.
Related tools and concepts
Frequently asked questions
How much of my Social Security is taxable?
Up to 85 percent. Combined income (AGI plus half of SS plus tax-exempt interest) below 25,000 USD single / 32,000 USD MFJ: zero taxed. Between 25,000 and 34,000 single (32,000 to 44,000 MFJ): up to 50 percent of SS taxed. Above 34,000 single / 44,000 MFJ: up to 85 percent taxed. These thresholds have not been indexed for inflation since 1984, so more retirees hit them each year.
Will my taxes be lower in retirement?
Usually yes for middle earners. Effective federal rates often drop from 18 to 24 percent during working years to 8 to 14 percent in retirement because earned income is replaced by partially-taxable Social Security, preferential-rate qualified dividends and LTCG, and tax-free Roth distributions. High earners with large pre-tax 401(k) and IRA balances can see RMD-driven taxes RISE in retirement (the tax torpedo), especially after age 73.
Should I use Roth or Traditional given my retirement bracket?
Roth if you expect your retirement bracket to be HIGHER than your current bracket. Traditional if lower. Most current workers underestimate their retirement bracket because they forget that RMDs at 73, Social Security taxation, and the loss of standard deduction stacking can push effective marginal rates 10 to 15 percentage points above headline brackets at certain income levels. A mix of both account types provides withdrawal flexibility.
What are 2026 federal income tax brackets for retirees?
2026 single filer ordinary income brackets: 10 percent up to 11,925 USD, 12 percent to 48,475 USD, 22 percent to 103,350 USD, 24 percent to 197,300 USD, 32 percent to 250,525 USD, 35 percent to 626,350 USD, 37 percent above. Long-term capital gains and qualified dividends: 0 percent up to 48,350 USD, 15 percent to 533,400 USD, 20 percent above. Standard deduction: 15,750 USD single, 31,500 USD MFJ, plus 2,000 USD extra for age 65+.
Sources
- IRS (2026) Revenue Procedure 2025-32, inflation adjustments for tax year 2026.
- IRS Publication 915 (2025) Social Security and Equivalent Railroad Retirement Benefits.
- IRS Publication 590-B (2025) Distributions from Individual Retirement Arrangements (IRAs) - RMD tables.
- Social Security Administration (2026) Cost of Living Adjustment announcement.
- Centers for Medicare and Medicaid Services (2026) Income-Related Monthly Adjustment Amount (IRMAA) tables.