Analysis by 
Oregon’s state income tax claims more than $7,000 from a $100,000 earner — before a single federal dollar is withheld. Nine states take nothing. That $7,000-plus gap between the highest-burden and no-burden states is the clearest argument for understanding exactly where your income falls on each state’s rate schedule.
Scope & Disclaimer: All figures reflect tax year 2026 for a single filer earning $100,000 in gross wage income, taking the standard deduction under each state’s own rules. Effective state rates are computed from each state’s applicable standard deduction and bracket schedule as published by the Tax Foundation (February 2026), cross-referenced against state Department of Revenue withholding tables. Figures represent state income tax on wages only; they exclude local income taxes (such as New York City’s or Portland metro’s), payroll taxes (FICA), property taxes, and sales taxes. States with no income tax on wages are listed at 0%, though some (Washington, Tennessee, New Hampshire through 2024) taxed investment income under separate rules. Federal calculations use the 2026 standard deduction of $16,100 (single filer) per IRS Revenue Procedure 2025-32. This is not tax advice; individual liability depends on deductions, credits, and income composition beyond the scope of this analysis.
Key Numbers at a Glance
| Metric | Figure | Source |
|---|---|---|
| Highest marginal state rate at $100k income | 8.75% (Oregon) | Oregon DOR, 2026 Withholding Formulas |
| States with 0% income tax on wages | 9 states | Tax Foundation, Feb. 2026 |
| Finluxy State Tax Differential (Oregon vs. Florida, $100k) | ~$7,056/year (7.1% of income) | Computed; Tax Foundation + Oregon DOR 2026 |
| Federal effective rate at $100k (single, 2026 std. deduction) | ~13.2% | IRS Rev. Proc. 2025-32; Tax Foundation 2026 |
| States that cut individual income tax rates since 2021 | 26 states | Tax Foundation, Feb. 2026 |
Why $100k Is the Right Benchmark
At $100,000, a single filer in most states sits at or near a marginal inflection point — above the middle brackets but below the “millionaire” surcharges that dominate headlines. California’s 13.3% top rate applies above $1 million; that number is irrelevant at $100k, where the state’s effective rate lands near 5.84% on taxable income (per Tax Foundation 2026 bracket schedules). The headline rate tells you almost nothing about the actual tax cost at this income level. The effective rate and the marginal rate applying at $100k tell you everything.
The article title uses $100k as gross income. Each state’s computation starts from that gross figure, subtracts the state’s own standard deduction (which varies significantly — Oregon’s is $2,910 for a single filer in 2026 versus Hawaii’s $4,400 and New York’s $8,000), then applies progressive brackets. States that conform their standard deduction to the federal amount ($16,100 in 2026 per IRS Rev. Proc. 2025-32) produce lower taxable income and therefore lower effective rates than states with narrow own-law deductions. Oregon is the clearest example: its $2,910 deduction leaves $97,090 taxable to the state versus the $83,900 that would be taxable if it conformed to federal rules — a $13,190 difference that the 8.75% marginal rate converts into roughly $1,154 in additional state tax.
All 50 States Ranked: Marginal State Rate at $100k Income (2026)
The table below shows the applicable marginal state income tax rate on the last dollar of $100,000 in wage income for a single filer. Effective state rate (actual tax as a share of $100k gross) is shown for states where state-specific bracket and deduction data was confirmed through Tax Foundation’s February 2026 tables and state DOR sources. Where exact effective rate computation required state-specific data not confirmed at publication, the marginal rate is shown with an effective rate range derived from the nearest available segment average. States are grouped by rate tier; within each tier, alphabetical order applies.
| Rank | State | Marginal State Rate at $100k | Approx. Effective State Rate at $100k | Structure |
|---|---|---|---|---|
| 1 (tied) | Alaska | 0% | 0% | No income tax |
| 1 (tied) | Florida | 0% | 0% | No income tax |
| 1 (tied) | Nevada | 0% | 0% | No income tax |
| 1 (tied) | New Hampshire | 0% | 0% | No income tax on wages (I&D tax repealed 2025) |
| 1 (tied) | South Dakota | 0% | 0% | No income tax |
| 1 (tied) | Tennessee | 0% | 0% | No income tax on wages |
| 1 (tied) | Texas | 0% | 0% | No income tax |
| 1 (tied) | Washington | 0% | 0% | No income tax on wages (capital gains taxed separately) |
| 1 (tied) | Wyoming | 0% | 0% | No income tax |
| 10 | Arizona | 2.5% | ~2.5% | Flat rate (2026) |
| 11 | North Dakota | 2.5% | ~2.0% | Graduated; 2.5% top rate |
| 12 | Indiana | 3.0% | ~3.0% | Flat rate |
| 13 | Ohio | 2.75% | ~2.3% | Flat on income above $26,050; 2026 change |
| 14 | Pennsylvania | 3.07% | ~3.1% | Flat rate |
| 15 | Iowa | 3.8% | ~3.8% | Flat rate (consolidated 2025) |
| 16 | Kentucky | 4.0% | ~4.0% | Flat rate |
| 17 | Missouri | 4.7% | ~3.8–4.2% | Graduated; capital gains exempt |
| 18 | Georgia | 5.19% | ~5.19% | Flat rate (phasing down) |
| 19 | Mississippi | 4.7% | ~4.0% | Graduated; lower brackets partially exempt |
| 20 | Colorado | 4.40% | ~4.4% | Flat rate |
| 21 | Alabama | 5.0% | ~4.0–4.5% | Graduated; low standard deduction |
| 22 | North Carolina | 3.99% | ~3.99% | Flat rate (final step-down to 3.99% in 2026) |
| 23 | Oklahoma | 4.5% | ~4.0% | Graduated; simplified to 3 brackets in 2026 |
| 24 | Michigan | 4.25% | ~4.25% | Flat rate |
| 25 | Louisiana | 3.0% | ~2.5–3.0% | Graduated; 2025 rate cuts |
| 26 | Utah | 4.55% | ~4.55% | Flat rate |
| 27 | Nebraska | 4.55% | ~4.0–4.4% | Graduated; top rate dropped to 4.55% in 2026 |
| 28 | New Mexico | 4.9% | ~4.5% | Graduated |
| 29 | Arkansas | 4.4% | ~4.0% | Graduated; 2-bracket system; 2025 rate cuts |
| 30 | Illinois | 4.95% | ~4.95% | Flat rate |
| 31 | Massachusetts | 5.0% | ~5.0% | Flat rate (5% base; 4% surtax applies above ~$1.08M only) |
| 32 | Kansas | 5.7% | ~4.5–5.2% | Graduated; 2-bracket system |
| 33 | West Virginia | 5.12% | ~4.5–5.0% | Graduated; rate cuts ongoing |
| 34 | South Carolina | 6.2% | ~5.0–5.5% | Graduated; top rate 6.2% (reverts to 6.2% July 2026) |
| 35 | Montana | 5.65% | ~5.0–5.4% | Graduated; top rate reduced to 5.65% in 2026 |
| 36 | Delaware | 6.6% | ~5.2–5.8% | Graduated |
| 37 | Idaho | 5.8% | ~5.2–5.5% | Flat rate |
| 38 | Virginia | 5.75% | ~5.3–5.6% | Graduated; top bracket reached at only $17,000 |
| 39 | Maryland | 5.75% | ~5.0–5.5% | Graduated + county local tax (not included here) |
| 40 | Rhode Island | 5.99% | ~5.2–5.6% | Graduated |
| 41 | Vermont | 6.6% | ~5.4–6.0% | Graduated |
| 42 | Wisconsin | 5.3% | ~4.8–5.2% | Graduated |
| 43 | Maine | 7.15% | ~5.5–6.2% | Graduated; conforms to pre-OBBBA federal std. deduction ($8,350 single) |
| 44 | Connecticut | 6.0% | ~5.0–5.5% | Graduated; personal exemption phases out at $30k |
| 45 | New Jersey | 5.525% | ~4.5–5.0% | Graduated |
| 46 | Minnesota | 7.05% | ~5.8–6.4% | Graduated; 7.05% bracket begins ~$89k single |
| 47 | New York | 5.5% | ~4.9–5.7% | Graduated; $8k state std. deduction; NYC adds up to 3.876% |
| 48 | California | 8.0% | ~5.84% | Graduated; state std. deduction only $5,202 single |
| 49 | Hawaii | 8.25% | ~7.6–8.0% | Graduated; 12 brackets; $4,400 std. deduction |
| 50 | Oregon | 8.75% | ~7.1–8.2% | Graduated; top bracket starts $125k; $2,910 std. deduction |
Sources: Tax Foundation, “2026 State Individual Income Tax Rates and Brackets,” February 2026; Oregon Department of Revenue, Oregon Withholding Tax Formulas 2026; Hawaii Department of Taxation, Tax Year 2025 bracket data (Act 46, SLH 2024); New York State Department of Taxation and Finance, 2026 withholding tables; IRS Revenue Procedure 2025-32. Effective rate ranges for states marked with “~” reflect the spread between calculations using each state’s own standard deduction vs. the applicable taxable income baseline; exact liability varies by credits and filing details.
Finluxy State Tax Differential at $100k Income
The Finluxy State Tax Differential quantifies the annual dollar difference in state income tax between the highest-burden comparable state and any reference state, at a specific income level. At $100,000 in wages, the differential between Oregon and a no-income-tax state like Florida, Texas, or Nevada is the clearest illustration of what state tax policy actually costs.
Oregon’s effective state income tax at $100k — using the state’s own $2,910 standard deduction — produces a liability of approximately $7,056 (7.1% effective rate on gross income, per CountryTaxCalc and Tax Foundation 2026 bracket verification). Florida’s liability: $0. The differential is $7,056 per year, or 7.1% of gross income. That is not a trivial rounding error. Over a ten-year horizon, compounded at even a modest 5% investment return, that annual difference becomes roughly $88,700 in foregone capital — before accounting for any investment income that differential could generate. For context on how relocation math actually works at higher incomes, the annual savings from moving to a low-tax state depend heavily on this base differential scaling with income.
| State | Approx. Annual State Tax ($100k) | Finluxy State Tax Differential vs. Florida | Differential as % of Gross Income |
|---|---|---|---|
| Oregon | ~$7,056 | $7,056/year | 7.1% |
| Hawaii | ~$7,600–$8,000 | $7,600–$8,000/year | 7.6%–8.0% |
| California | ~$5,842 | $5,842/year | 5.84% |
| Minnesota | ~$5,800–$6,400 | $5,800–$6,400/year | 5.8%–6.4% |
| New York (state only) | ~$4,950–$5,714 | $4,950–$5,714/year | 5.0%–5.7% |
| Massachusetts | ~$5,000 | $5,000/year | 5.0% |
| Illinois | ~$4,950 | $4,950/year | 4.95% |
| North Carolina | ~$3,990 | $3,990/year | 3.99% |
| Indiana | ~$3,000 | $3,000/year | 3.0% |
| Florida | $0 | $0 (baseline) | 0% |
Sources: Tax Foundation, February 2026; Oregon DOR 2026 Withholding Formulas; CountryTaxCalc Oregon 2026 calculator; IRS Rev. Proc. 2025-32. Hawaii range reflects uncertainty in 2026 bracket thresholds (Act 46 phased implementation); exact figures require state DOR calculation for individual filer. New York range reflects the difference between using taxable income vs. gross income as the calculation base and excludes NYC/Yonkers local tax.
What the Data Shows That Most Coverage Overlooks
Oregon outranks California as the highest-burden state at $100,000 — and almost no coverage acknowledges this. California’s 13.3% headline rate fires the imagination, but a $100k single filer in California faces an 8.0% marginal state rate and roughly a 5.84% effective state rate (Tax Foundation 2026 brackets, ustax.tools calculation). Oregon’s 8.75% marginal rate applies at $100k — before the $125k threshold that triggers the 9.9% top rate — and its nearly useless $2,910 state standard deduction keeps taxable income high. The result: Oregon is the more expensive state at this income level, not California.
Hawaii compounds this further. With 12 brackets and a state standard deduction of just $4,400, the effective rate at $100k sits in the 7.6%–8.0% range — higher than California’s confirmed 5.84%. The Oregon and Minnesota income tax cost for high earners is consistently underreported relative to California, which captures disproportionate media attention for its top rate that most $100k earners never approach.
The second overlooked data point: Virginia. Its top bracket of 5.75% triggers at just $17,000 in taxable income — meaning a $100k earner in Virginia faces the same marginal rate as someone earning $25,000. The bracket cliff is extreme. For the comparison at $120k income, Virginia barely moves, while states with more progressive structures see meaningful rate differences between $100k and $120k.
The third: the 2026 wave of rate reductions is real and measurable. Tax Foundation’s February 2026 update confirms that 26 states have reduced individual income tax rates since 2021. At $100k, this includes North Carolina dropping to a flat 3.99% (its scheduled final step-down), Nebraska’s top rate falling to 4.55%, Montana to 5.65%, and Oklahoma simplifying to a 4.5% top rate. These are meaningful shifts for earners in those states, not marginal adjustments.
The High-Burden States: What $100k Actually Costs
Three states separate themselves at the top of the burden ranking for a $100k earner: Oregon, Hawaii, and — depending on methodology — Minnesota. The mechanics differ by state.
Oregon’s structural problem is its standard deduction. At $2,910 for a single filer in 2026 (Oregon DOR Withholding Formulas 2026), Oregon taxes $97,090 of a $100k earner’s income. That contrasts sharply with the federal baseline of $16,100. The 8.75% bracket kicks in above $10,200 and runs all the way to $124,999 — meaning nearly the entire gross income sits in the third bracket. Portland-area residents stack Multnomah County (1.5%–3%) and Metro SHS (1%) taxes on top, pushing combined local-plus-state marginal rates to 11.25%–12.25% at $100k–$125k. Those local taxes are not reflected in the state-only ranking above. The effective burden comparison for Oregon is materially worse in the Portland metro than the statewide rate implies.
Hawaii’s 12-bracket design produces a similar effect through a different mechanism. The state’s standard deduction of $4,400 is larger than Oregon’s but still far below the federal level. The personal exemption credit ($1,144 for a single filer) reduces final liability, but 12 brackets means the income climbs through multiple rates before plateauing. At $100k gross, effective Hawaii state tax lands in the $7,600–$8,000 range — confirmed directionally by multiple calculators cross-referenced with Hawaii DOR data (Act 46, SLH 2024, which restructured brackets effective January 1, 2025 through a phased implementation running to 2031). This makes Hawaii, along with Oregon, a materially higher-cost state at $100k than California despite California’s famous headlines.
Minnesota is the subtler case. Its 7.05% bracket begins at approximately $89,000 for single filers (2025 threshold; 2026 thresholds not published at time of research). At $100k, a Minnesota filer sits near the bottom of that third bracket, producing an effective state rate in the 5.8%–6.4% range. The state income tax guide for high earners shows that Minnesota’s burden increases sharply at higher incomes — the 9.85% bracket above $198,630 (2025 threshold) is one of the steepest rate cliffs in the country for the $150k–$250k range.
No-Income-Tax States: A Cleaner Picture Than the Headlines
Nine states impose no income tax on wages in 2026: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. New Hampshire completed the repeal of its narrow interest-and-dividends tax as of January 1, 2025, making it a full no-income-tax state on wages for the first time (Tax Foundation, February 2026). Washington taxes capital gains income under a separate structure — a 7% rate on gains above $278,000 (2025 standard deduction; adjusted annually), with a 9.9% rate on gains above $1 million added retroactively from January 2025 via SB 5813 — but wages remain untaxed. For a $100k W-2 earner, Washington is effectively a zero-income-tax state.
The honest caveat: no-income-tax states often offset lost revenue through higher property taxes and sales taxes. Texas and New Hampshire carry above-average property tax burdens; Tennessee and Washington lean heavily on sales tax. The true savings in no-income-tax states require accounting for those offsets — they are real but smaller than the $7,000 state-income-tax differential at $100k implies when viewed in isolation.
For the $150k+ earner evaluating a move, the relevant question is not whether the no-income-tax advantage exists — it clearly does — but how the savings scale with income. At $100k, Oregon’s burden is approximately $7,056 compared to Florida’s $0. At $200k, that gap widens as Oregon’s 8.75% bracket absorbs more income approaching the $125k threshold (above which 9.9% applies). The California vs. Texas annual tax difference at $300k and the New York vs. Florida gap for $250k earners show how dramatically these differentials compound as income rises.
Combined Federal + State Rate at $100k
The federal effective rate at $100,000 gross income (single filer, 2026 standard deduction of $16,100) is approximately 13.2%. The arithmetic: taxable income of $83,900; tax of $1,240 at 10% on the first $12,400, $4,493 at 12% on the next $37,440, and $7,493 at 22% on the remaining $34,060; total federal income tax of approximately $13,226. That rate is confirmed by multiple sources cross-referencing IRS Rev. Proc. 2025-32 data via Tax Foundation and Congress.gov’s CRS report (April 2026).
Stack the state layer on top:
| State | Federal Effective Rate | Approx. State Effective Rate | Combined Effective Rate |
|---|---|---|---|
| Oregon | ~13.2% | ~7.1%–8.2% | ~20.3%–21.4% |
| Hawaii | ~13.2% | ~7.6%–8.0% | ~20.8%–21.2% |
| California | ~13.2% | ~5.84% | ~19.0% |
| Minnesota | ~13.2% | ~5.8%–6.4% | ~19.0%–19.6% |
| New York (state only) | ~13.2% | ~5.0%–5.7% | ~18.2%–18.9% |
| Illinois | ~13.2% | ~4.95% | ~18.2% |
| North Carolina | ~13.2% | ~3.99% | ~17.2% |
| Florida / Texas / Nevada | ~13.2% | 0% | ~13.2% |
Sources: Federal rate computed from IRS Rev. Proc. 2025-32 via Tax Foundation, “2026 Federal Tax Brackets,” April 2026. State rates sourced as noted in the full ranking table above. Combined rate = federal effective rate + state effective rate (FICA taxes excluded; these add approximately 7.65% employee share for most W-2 employees). NYC local tax excluded from New York figure. For context on how these rates evolve at higher incomes, see combined federal and state rates at $400k income.
For a $100k earner in Oregon, the combined federal and state income tax burden alone approaches 20.3%–21.4% of gross income. Add the employee FICA contribution (7.65%) and the all-in rate reaches 28%–29% — before property taxes, sales taxes, or any local levy. Florida or Texas residents at the same income face approximately 20.9% all-in (13.2% federal + 7.65% FICA), a gap of 7–8 percentage points. On $100,000, that is a $7,000–$8,000 annual cash difference purely from state income tax structure — the same figure the Finluxy State Tax Differential captures above.
The State Tax Trap for Remote Workers
State rankings based on domicile matter less if the state where you work controls. Six states — New York, Connecticut, Delaware, Nebraska, Pennsylvania, and New Jersey (for its own residents) — apply a “convenience of the employer” rule that can tax remote wages as if earned in the employer’s state, even when the employee lives elsewhere. A $100k remote worker employed by a New York firm but domiciled in Florida may owe New York state income tax if their remote arrangement is deemed for the employee’s convenience rather than the employer’s operational necessity. The state tax rules for remote workers determine whether your physical address actually controls your tax bill — and for New York employers, it frequently does not.
The same complexity applies when a household splits residency across two states during a year. The cost of part-year residency often eliminates the savings from a planned relocation when timing is not managed precisely.
What This Means for $150k+ Households
A $100k benchmark is useful for isolating state rate structures, but the $150k+ household faces a different arithmetic. At $150k, Oregon enters its 9.9% bracket on income above $125,000 — meaning 16.7% of that household’s income ($25,000) faces the state’s top rate plus the 8.75% rate on the income below that threshold. The Finluxy State Tax Differential vs. Florida at $150k would exceed $11,000 per year. The state-by-state comparison at $120k is the next logical step up from this analysis.
For households evaluating domicile decisions, the SALT cap change from the One Big Beautiful Bill Act — increasing the federal SALT deduction cap from $10,000 to $40,000 for most taxpayers in 2026 — partially offsets high-state-tax burdens for those who itemize. At $100k, a filer paying $7,000 in Oregon state income tax can now deduct most or all of it federally (assuming total SALT under $40,000), recovering approximately $1,540 in federal tax savings at the 22% marginal rate. The SALT cap impact on $100k households changes the net effective burden calculation meaningfully in 2026 compared to prior years. High earners phasing out of the SALT benefit above approximately $505,000 in MAGI (for single filers; the phase-out applies under the OBBBA) lose this offset entirely — a factor that makes state domicile decisions more consequential, not less, as income rises above $150k. The full California vs. Texas tax gap at $100k and the state capital gains tax comparison complete the picture for households with investment income beyond wages. Any relocation decision at this income level warrants precise modeling against the actual state DOR calculators listed in the methodology below — the ranges in this article reflect the genuine spread in how different computation approaches treat standard deductions and bracket thresholds, and a $500–$1,000 error in either direction matters at $150k+.
Which state has the highest income tax burden at exactly $100k income?
Oregon and Hawaii effectively tie for the highest burden at $100,000 in gross wages for a single filer in 2026. Oregon’s 8.75% marginal rate applies at this income level (the 9.9% rate kicks in above $125,000) and its $2,910 state standard deduction leaves most income taxable, producing an effective state rate of approximately 7.1%–8.2%. Hawaii’s 12-bracket system with a $4,400 state standard deduction yields an effective rate in the 7.6%–8.0% range. California, often cited as the highest-tax state, produces an effective rate of approximately 5.84% at $100k — notably lower than either Oregon or Hawaii at this income level. The headline 13.3% California rate applies only above $1 million for single filers.
Does New Hampshire still have an income tax in 2026?
No. New Hampshire repealed its narrow interest-and-dividends tax effective January 1, 2025, making it a full no-income-tax state on wage and salary income as of 2025 and 2026. This is confirmed in the Tax Foundation’s February 2026 state income tax rates publication. New Hampshire joins Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington (on wages), and Wyoming as states imposing no income tax on W-2 wage income.
How does the 2026 SALT cap change affect the net burden in high-tax states?
The One Big Beautiful Bill Act (OBBBA), enacted July 4, 2025, raised the federal SALT deduction cap from $10,000 to $40,000 for most taxpayers, effective 2026. For a $100k earner in a high-tax state paying $7,000 in state income tax and itemizing, the ability to deduct that full amount at a 22% federal marginal rate recovers approximately $1,540 in federal taxes — meaningfully reducing the net state burden. The phase-out starts at MAGI above approximately $505,000 for single filers (per Tax Foundation’s 2026 bracket analysis), so the benefit is fully intact at $100k but disappears for very high earners. This makes the raw state tax differential shown in this article an upper bound on actual after-tax cost for itemizers in 2026.
Are the effective rates in this article based on gross income or taxable income?
Effective rates throughout this article are expressed as state income tax liability divided by $100,000 in gross income. The underlying computations apply each state’s own standard deduction to arrive at state taxable income, then apply progressive brackets. Because state standard deductions vary widely — from Oregon’s $2,910 to the $8,000–$8,350 range for states partially conforming to federal law — the effective rate on gross income differs from the effective rate on state taxable income. Where a range is shown (e.g., “7.1%–8.2%”), it reflects the difference between computing the state tax on federal-adjusted taxable income ($83,900) versus the higher state taxable income resulting from the state’s lower own-law deduction.
Methodology
This analysis uses the Tax Foundation’s February 2026 state individual income tax rate and bracket publication as the primary source for all 50 states. That data was cross-referenced against Oregon Department of Revenue Withholding Tax Formulas 2026, Hawaii DOR Act 46 SLH 2024 bracket restructuring data, New York State Department of Taxation and Finance 2026 withholding tables (via nerdwallet.com and levyio.com compilation), and IRS Revenue Procedure 2025-32 for all federal figures. The federal effective rate computation was verified against Congress.gov CRS report RL34498 (April 2026), the Tax Foundation’s April 2026 federal bracket analysis, and multiple secondary calculators.
Effective state rates for key featured states (Oregon, California, Hawaii, New York) were computed directly from bracket arithmetic and cross-checked against the CountryTaxCalc.com Oregon calculator and the ustax.tools state income tax calculator — both of which cite Tax Foundation and state DOR schedules as primary inputs. Where effective rate computation for a state required bracket thresholds not confirmed through a primary source (e.g., 2026 inflation-adjusted thresholds not yet published at February 2026 research date), effective rate ranges are shown. These ranges represent the output difference under alternative standard deduction assumptions and should not be treated as a precise point estimate. Local income taxes (New York City, Portland Metro, Multnomah County) are excluded from all state-tier figures to maintain comparability; their omission materially understates burden for residents of those localities.
The Finluxy State Tax Differential compares the subject state’s estimated annual state income tax liability to Florida’s $0 liability at $100,000 gross income, expressed as a dollar amount and as a percentage of gross income, consistent with the Cluster Brief definition.
Sources & References
- Tax Foundation — 2026 State Individual Income Tax Rates and Brackets (February 2026)
- Tax Foundation — 2026 Federal Tax Brackets and Rates (April 2026)
- IRS — Revenue Procedure 2025-32: Tax Year 2026 Inflation Adjustments
- Congressional Research Service (Congress.gov) — Federal Income Tax Brackets, Standard Deductions 1988–2026 (April 2026)
- LegalClarity — Oregon Income Tax Rates and Brackets 2026, citing Oregon DOR Withholding Tax Formulas
- CountryTaxCalc — Oregon 2026 Income Tax Calculator ($100k effective rate figure)
- RemoteLaws — Hawaii Income Tax Rates and Brackets 2025 (Act 46, SLH 2024 restructuring)
- USTax.tools — State Income Tax Calculator 2025 & 2026 (California $100k effective rate)
- NerdWallet — New York State Income Tax Rates and Brackets 2025–2026
- Tax Foundation — 2026 State Tax Changes Taking Effect January 1 (January 2026)