Markwayne Mullin has built a career that spans business, sports and politics. The Oklahoma senator first gained attention after taking over his family’s plumbing company at 20 years old and expanding it into a successful regional business. He later competed briefly as a professional mixed martial arts fighter before entering politics, serving in the U.S. House of Representatives for a decade and then winning election to the Senate in 2022.
Now, Mullin is back in the national spotlight after President Donald Trump announced that he plans to appoint him as the next U.S. Secretary of Homeland Security, replacing Kristi Noem. In a post on Truth Social, Trump wrote, “I am pleased to announce that the Highly Respected United States Senator from the Great State of Oklahoma, Markwayne Mullin, will become the United States Secretary of Homeland Security (DHS), effective March 31, 2026.” Trump also praised Mullin as “a MAGA Warrior, and former undefeated professional MMA fighter,” adding that he believes the senator will “work tirelessly to keep our border secure” and “make a spectacular Secretary of Homeland Security.”
With Mullin’s nomination drawing widespread attention, many are now curious about his background, career and financial standing. Learn more about Mullin’s net worth and how he built his fortune below.
How Much Money Did Markwayne Mullin Make From His MMA Career?
Before entering politics, Mullin briefly competed as a professional MMA fighter. He fought in a small regional promotion between 2006 and 2007 and finished his career undefeated. However, because he only had a handful of fights and competed outside of major organizations like the UFC, the earnings from his MMA career were relatively modest.
What Is Markwayne Mullin’s Net Worth?
Mullin is considered one of the wealthier members of Congress. Recent financial disclosures estimate his net worth at roughly $60 million to $65 million.
According to Fortune, Mullin built much of his wealth through his family’s plumbing business, Mullin Plumbing, which he took over at age 20 and helped grow into a large regional company. His assets also include a sizable cattle ranch in Oklahoma along with real estate holdings and other investments. His business background helped him accumulate substantial wealth before he entered politics.
How Much Money Does Markwayne Mullin Make Now?
As a U.S. senator representing Oklahoma, Mullin earns the standard congressional salary of about $174,000 per year.
In March 2026, Mullin was nominated to serve as Secretary of Homeland Security following the departure of Noem. If confirmed to the role, his salary would change to the cabinet-level pay scale set for federal executive officials.
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