NiSource Long Term Debt

NiSource (NI) currently reports a long-term debt of $16B as of June 2026. That compares with $14B in the prior-year period — up 7.9% year over year. Use the charts on this page to explore NiSource's long-term debt history and peer comparisons.

NiSource's long-term debt increased from $14B to $16B — a 7.9% year-over-year increase (period ending June 2026). Watching multi-year history on the chart below helps separate one-off swings from a lasting trend.

NiSource reported $16B in long-term debt as of June 2026. That compares with $14B in the prior-year period — up 7.9% year over year. Absolute dollar amounts are most useful when compared with prior periods, peers, and related line items such as revenue, assets, or liabilities on Stockcircle.

Start with the current long-term debt of $16B, then check the historical chart for trend and the peer comparison chart for relative positioning. From there, open related valuation or income-statement pages for NiSource, and consider following NI for alerts when major investors trade the stock.

NiSource is classified in the Utilities sector. On long-term debt, it currently shows $16B. Sector peers often share similar capital intensity and growth regimes, so relative rankings inside Utilities are usually more informative than comparing NI with unrelated industries.