Nisource (NI) Tax Rate (2009 - 2026)

Nisource has reported Tax Rate for 18 years, with the latest figure at 13.36% in Q1 2026.

• For the quarter ending Q1 2026, Tax Rate fell 335.0% year-over-year to 13.36%; the trailing twelve-month figure through Mar 2026 stood at 15.0% (down 121.0% YoY), and the FY2025 full-year result was 16.75%, up 99.0% from the prior year.
• Tax Rate for Q1 2026 stood at 13.36%, down from 16.17% in the prior quarter.
• The five-year high for Tax Rate was 23.34% in Q2 2023, with the low at 3.72% in Q3 2023.
• Historically, Tax Rate has averaged 16.05% across 5 years, with a median of 16.14% in 2025.
• Annual changes were most pronounced in 2023 — Tax Rate plunged 1184 bps — and 2024, when it jumped 1037 bps.
• Nisource's Tax Rate stood at 15.63% in 2022, then increased by 1 bps to 15.72% in 2023, then gained by 6 bps to 16.59% in 2024, then fell by 3 bps to 16.17% in 2025, then retreated by 17 bps to 13.36% in 2026.
• The last three Tax Rate figures came in at 13.36% (Q1 2026), 16.17% (Q4 2025), and 16.14% (Q3 2025), per Business Quant data.