What Changed
New Jersey holds the top combined corporate rate at 29.5 percent for 2026, the sum of the 21 percent federal rate and its 11.5 percent state levy. North Carolina sits at the bottom with a combined 23.5 percent rate as its state rate continues stepping down toward zero by 2030. The spread between the highest and lowest state is 9 percentage points on the same federal base.
The Numbers That Matter
| State | State Corporate Rate | Combined Rate (Fed + State) | Rank |
|---|---|---|---|
| New Jersey | 11.5% | 29.5% | 1st highest |
| Minnesota | 9.8% | 28.5% | 2nd highest |
| Illinois | 9.5% | 28.3% | 3rd highest |
| North Carolina | 2.5% | 23.5% | Lowest |
| No corporate tax (NV, OH, SD, TX, WA, WY) | 0.0% | 21.0% | Floor |
What This Means for Your Portfolio
For a $1.5M allocation to a closely held C-corp or a concentrated small-cap position domiciled in New Jersey, the 6-point rate gap against the no-tax states translates to roughly $90,000 in annual pre-distribution earnings that state tax claims before any dividend or capital gains layer at the shareholder level. State domicile creates a recurring annual tax difference of that magnitude, not a one-time impact.
Scenario Analysis
| Position Size | Pre-Tax Operating Income | Tax at NJ Combined Rate (29.5%) | Tax at NC Combined Rate (23.5%) | Annual Savings in Low-Rate State |
|---|---|---|---|---|
| $500K entity income | $500,000 | $147,500 | $117,500 | $30,000 |
| $1M entity income | $1,000,000 | $295,000 | $235,000 | $60,000 |
| $2M entity income | $2,000,000 | $590,000 | $470,000 | $120,000 |
Frequently Asked Questions
Q: What is the highest combined federal and state corporate tax rate in 2026? A: New Jersey, at 29.5 percent, combining the 21 percent federal rate with its 11.5 percent state rate.
Q: What is the lowest combined corporate tax rate among states that levy one? A: North Carolina, at 23.5 percent, the result of a state rate of 2.5 percent layered on the 21 percent federal rate.
Q: How many states impose no corporate income tax at all? A: Six states, Nevada, Ohio, South Dakota, Texas, Washington, and Wyoming, leaving the corporate rate at the 21 percent federal floor.
Q: Does the state corporate rate affect a pass-through entity like an S-corp or LLC? A: No, pass-through income is taxed at the individual rate, so this briefing applies specifically to C-corp structures and corporate holding vehicles.
Run the Numbers
Use CalcMoney's Calculate Payment at Current Rate to see your exact figures under the current tax threshold.
This article is for informational purposes only and should not be construed as professional financial, tax, or legal advice. Consult with a qualified tax advisor or attorney before making business structure or domicile decisions.
Run the Numbers: Capital Gains Tax Terminal on CalcMoney — see your exact figures under current market conditions.
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Data sourced from State Tax Policy Changes. Rates and thresholds are for informational purposes only. Consult a licensed financial advisor before making mortgage, investment, or tax decisions.
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