MerckInc's long-term debt is $51B.
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As of the most recent data (June 2026), MRK shows a long-term debt of $51B. That compares with $34B in the prior-year period — up 50.4% year over year. Scroll down for historical charts and peer comparison views.
Compared with the year-ago period, MRK's long-term debt is now $51B (was $34B) — a 50.4% year-over-year increase. Pairing that YoY change with peer averages gives a clearer picture of whether MerckInc is outperforming or lagging.
Tracking MRK's long-term debt over time shows whether MerckInc is scaling, shrinking, or reshaping that part of the business. The current reading is $51B That compares with $34B in the prior-year period — up 50.4% year over year. Multi-quarter patterns matter more than any single print, which is why this page emphasizes history and peer comparison charts.
Besides this long-term debt page, Stockcircle has MerckInc's full stock overview, other financial metrics, insider and congress trade tabs, and tools to follow the stock. Together they help you connect long-term debt (currently $51B) with ownership activity and broader fundamentals.
MerckInc's long-term debt is $51B; compare it with other Healthcare names on the peer chart. Typical ranges vary by sub-industry, so always sanity-check against the closest competitors, not just the whole sector bucket.