Germ czar Anthony Fauci has nearly doubled his net worth since retiring from government service at the end of 2022 — raking in an estimated $12.5 million, a Post analysis reveals.

In just his first year of retirement, the government’s former COVID-19 commissar earned $3.5 million, according to a 141-page financial disclosure report obtained by government watchdog group Open The Books.

But Fauci’s war chest has only exploded since then, through book deals, speaking engagements, prestigious awards, and a $350,000 golden parachute from taxpayers.

Fauci stepped down from government work in December 2022 after leading the National Institute of Allergy and Infectious Diseases (NIAID) for 38 years, becoming highest paid federal employee in the nation, making $480,654-a-year at the time of his retirement — $80,000 more than the President’s salary.

A public records request from Minnesota’s Alpha News uncovered that Fauci was paid $75,000 to give a speech at the University of Minnesota in April. Industry estimates put a Fauci appearance between $50,000 to $100,000 a pop, and since 2024, Fauci has appeared at least 18 times for public speaking engagements, earning an estimated $900,000, at least.

Fauci’s next gig is booked for September in Wilton Manors, Florida — a beachside enclave popular with older gay men where seats are going for $160 each, roughly the same ticket price as seeing popstar Bad Bunny live.

“In the year since I stepped down as NIAID director, I have had the opportunity to lecture and engage in fireside chats and moderated discussions throughout the country,” Fauci wrote in his 2024 memoir, “On Call: A Doctor’s Journey in Public Service.”

Publishing insiders previously told The Post he sold that book to Penguin Random House’s Viking imprint for a whopping $5 million.

“When I decided to step down from my position as director of NIAID, I asked myself what I could do over the next few years while I am still filled with passion and energy and blessed with good health. The answer came to me quickly and clearly: to share my experiences with the world and particularly the younger generation,” he wrote in the tome.

That desire, he said in the book, brought him into his current top teaching job at Georgetown University, where the average professor salary is $233,000-a-year — although Fauci will undoubtedly get a higher salary as he holds multiple roles at the school and brings star power.

In addition to the $750,000 he’s since made from teaching (a low estimate), academia has showered Fauci with medals and monetary prizes since he stepped down, including $50,000 from Columbia University’s Calderone Prize and a $40,000 gift from the National Academy of Medicine’s Lienhard Prize.

He continues to get a hearty royalty check from McGraw-Hill publishers for a textbook he has edited since the 1980s, a yearly sum between $100,000 and $1,000,000, according to financial documents which do not disclose the exact amount.

Fauci’s six-figure government pension is estimated to be over $350,000 a year — the largest in government history, injecting a cool $1.5 million in taxpayer money into his pocket since he left the job.

All this adds up to a conservative estimate of $12.5 million, grossed since he retired in late 2022. That figure nearly doubles his net worth to a whopping $27.5 million today.

In 2019, the year prior to the COVID-19 outbreak, Fauci had a reported net worth of $7.6 million but that number skyrocketed to $15 million in 2023 after COVID, at a time when he was also receiving taxpayer-funded transportation and security details, according to financial reports.

Fauci’s longtime pal Lawrence Gostin, a friend and colleague at Georgetown, said Fauci remains deeply engaged with students, but has embraced a quieter personal routine.

“He is kind and generous with his time for students,” he told The Post.

He went on to describe the controversial, Fifth Amendment-pleading disease expert as “proud of his Catholic, Italian heritage” and “still super fit but walks rather than runs,” now that he’s 85. 

Fauci and his wife, Christine Grady, have become much more publicly visible together in recent years and are regularly seen attending Georgetown events and taking power walks near their $2.4 million Washington home.

Fauci — who did not return The Post’s request for comment — claimed he opted for a particularly humble retirement send-off, rejecting plans for a lavish bash organized by the National Institutes of Health.

“I opted instead for a no-bells-and-whistles, carrots-and-hummus affair on the top floor of a campus building,” he wrote, adding “affectionate remarks” from his colleagues were on the stopwatch.

“I insisted that no one go on for longer than three minutes,” he claimed.

However, those who knew Fauci in the 80s say he then appeared much more driven to show off.

Dr. Carole Lieberman used to book Fauci when she worked at the show Lifetime Medical Television as a host, writer and producer in the ‘80s, and said he was one of her most dependable guests.

“He always said yes [to coming on],” Lieberman told The Post. “Every single time I called him he said yes, but it wasn’t really my talent for booking him, it was his narcissism.”