Growth Metrics

Nisource (NI) Tax Rate (2016 - 2026)

Nisource filings provide 17 years of Tax Rate readings, the most recent being 16.17% for Q4 2025.

  • On a quarterly basis, Tax Rate fell 42.0% to 16.17% in Q4 2025 year-over-year; TTM through Dec 2025 was 16.75%, a 99.0% increase, with the full-year FY2025 number at 16.75%, up 99.0% from a year prior.
  • Tax Rate hit 16.17% in Q4 2025 for Nisource, roughly flat from 16.14% in the prior quarter.
  • In the past five years, Tax Rate ranged from a high of 23.34% in Q2 2023 to a low of 3.72% in Q3 2023.
  • Median Tax Rate over the past 5 years was 16.38% (2025), compared with a mean of 16.43%.
  • The widest YoY moves for Tax Rate: up 4198bps in 2021, down -47284bps in 2021.
  • Nisource's Tax Rate stood at 13.57% in 2021, then rose by 15bps to 15.63% in 2022, then grew by 1bps to 15.72% in 2023, then rose by 6bps to 16.59% in 2024, then decreased by -3bps to 16.17% in 2025.
  • The last three reported values for Tax Rate were 16.17% (Q4 2025), 16.14% (Q3 2025), and 19.15% (Q2 2025) per Business Quant data.