Alliant Energy (LNT) Interest Expenses (2009 - 2025)

Alliant Energy has reported Interest Expenses for 17 years, with the latest figure at $140.0 million in Q4 2025.

• For the quarter ending Q4 2025, Interest Expenses rose 16.67% year-over-year to $140.0 million; the trailing twelve-month figure through Dec 2025 stood at $511.0 million (up 13.81% YoY), and the FY2025 full-year result was $512.0 million, up 14.03% from the prior year.
• Interest Expenses for Q4 2025 stood at $140.0 million, up from $128.0 million in the prior quarter.
• The five-year high for Interest Expenses was $140.0 million in Q4 2025, with the low at $68.0 million in Q3 2021.
• Historically, Interest Expenses has averaged $97.8 million across 5 years, with a median of $97.5 million in 2023.
• Annual changes were most pronounced in 2021 — Interest Expenses fell 1.43% — and 2023, when it climbed 27.03%.
• Alliant Energy's Interest Expenses stood at $71.0 million in 2021, then gained by 26.76% to $90.0 million in 2022, then rose by 16.67% to $105.0 million in 2023, then increased by 14.29% to $120.0 million in 2024, then rose by 16.67% to $140.0 million in 2025.
• The last three Interest Expenses figures came in at $140.0 million (Q4 2025), $128.0 million (Q3 2025), and $124.0 million (Q2 2025), per Business Quant data.