Nisource (NI) Tax Rate (2009 - 2026)
Nisource's Tax Rate came in at 10.09% for Q3 2026, down 7.41 percentage points from 17.50% a year earlier and down 25.20 percentage points from the prior quarter.
Powered by 
Analysis
Nisource (NI) Tax Rate (2009 - 2026) Analysis & Trends
Over the trailing twelve months to Sep 30, 2026, Nisource reported Tax Rate of 14.61%, down 2.70 percentage points year-over-year; for FY2025, it was 17.04%, up 0.19 percentage points from FY2024.
- Tax Rate carries a four-year change of -0.66 percentage points (FY2021 to FY2025).
- Going back by year, Tax Rate was 16.85% in FY2024 (-0.46 pp), 17.31% in FY2023 (-0.89 pp), 18.20% in FY2022 (+0.51 pp) and 17.69% in FY2021.
- The Q3 2026 figure represents the lowest quarterly Tax Rate since Q3 2023.
- Year-over-year, Tax Rate increased in four of the last eight quarters, with an average year-over-year change of +0.96 percentage points.
- The fastest year-over-year change in Tax Rate over five years came in Q2 2026 (a gain of 16.07 percentage points), and the weakest in Q4 2021 (a drop of 29.05 percentage points).
- Business Quant data shows NI's Tax Rate at 35.29% (Q2 2026), 13.67% (Q1 2026) and 16.36% (Q4 2025) in the three quarters before Q3 2026.
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Tax Rate (Qtr) |
|---|---|---|---|---|---|
| 1 | Wisconsin Electric Power | 99,216.00 Bn | 99,215.99 Bn | 911.30 Mn | 14.89% |
| 2 | Enel Chile | 301.57 Bn | 301.57 Bn | 1.33 Bn | - |
| 3 | Nextera Energy | 180.93 Bn | 179.04 Bn | - | 13.16% |
| 4 | Southern | 109.04 Bn | 101.70 Bn | 7.31 Bn | 18.54% |
| 5 | Duke Energy | 100.59 Bn | 99.24 Bn | 6.37 Bn | 15.34% |
| 6 | National Grid | 86.94 Bn | 59.27 Bn | - | - |
| 7 | American Electric Power | 69.61 Bn | 68.67 Bn | 4.75 Bn | 9.48% |
| 8 | Entergy | 53.37 Bn | 42.94 Bn | - | 22.76% |
| 9 | Sempra | 51.29 Bn | 84.11 Bn | - | - |
| 10 | Nisource | 21.72 Bn | 23.31 Bn | 1.14 Bn | 8.61% |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Sep 30, 2026 | 8.61% |
| Jun 30, 2026 | 21.66% |
| Mar 31, 2026 | 13.36% |
| Dec 31, 2025 | 16.17% |
| Sep 30, 2025 | 16.14% |
| Jun 30, 2025 | 19.15% |
| Mar 31, 2025 | 16.71% |
| Dec 31, 2024 | 16.59% |
| Sep 30, 2024 | 14.08% |
| Jun 30, 2024 | 14.58% |
| Mar 31, 2024 | 15.96% |
| Dec 31, 2023 | 15.72% |
| Sep 30, 2023 | 3.72% |
| Jun 30, 2023 | 23.34% |
| Mar 31, 2023 | 20.25% |
| Dec 31, 2022 | 15.63% |
| Sep 30, 2022 | 15.56% |
| Jun 30, 2022 | 17.70% |
| Mar 31, 2022 | 18.24% |
| Dec 31, 2021 | 13.57% |
API Access
Nisource Tax Rate API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=tax-rate&ticker=NI&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "tax-rate", "ticker": "NI", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=tax-rate&ticker=NI&period=max&api_key=YOUR_API_KEY");
const data = await res.json();