Maggie Siff – Biography, Net Worth, Husband, and More

Maggie Siff is an American actress who has built a reputation for portraying complex, psychologically rich characters across television, film, and stage. Best known for her roles as Wendy Rhoades on Showtime’s Billions, Tara Knowles on FX’s Sons of Anarchy, and Rachel Menken on AMC’s Mad Men, she has remained a private figure despite her career in the spotlight. Here is a comprehensive look at her age, net worth, personal life, and professional journey.

Born in the Bronx, New York, Siff grew up with a father who was a stage actor, an influence that drew her toward theater early on. She earned a Bachelor of Arts in English from Bryn Mawr College and later a Master of Fine Arts from New York University’s Tisch School of the Arts. That academic foundation, combined with her natural talent, set the stage for a career that would span two decades and counting.

Her television debut came in 2004, and within a few years she landed the role that made her a household name among prestige-TV audiences. Yet Siff has also endured personal tragedy, including the loss of her husband in 2021. She continues to work steadily, with a West End debut in London anticipated in 2026.

Who Is Maggie Siff? Age, Biography, and Early Life

Key Insights About Maggie Siff

• Maggie Siff rose to prominence with her breakout role as Rachel Menken on Mad Men, which paved the way for her lead part in Billions.
• Despite being a private person, her estimated net worth is around $8 million, according to some sources, though verifiable figures are limited.
• She was married to Paul Ratliff, who died in 2021 from brain cancer. They have one daughter, Lucy, born in 2014.
• Siff’s theater background continues to influence her acting; she is making her West End debut in London and has appeared in stage productions such as The Taming of the Shrew.
• There is no officially verified social media account for Maggie Siff; fan-run accounts, such as @maggiesiffbrasilfans, are not endorsed by the actress.

Key Facts About Maggie Siff

Maggie Siff’s Personal Life: Husband, Kids, and Relationships

Is Maggie Siff Married? Husband Details

Maggie Siff was married to Paul Ratliff in October 2012. Ratliff’s professional background is not widely reported, but he was known to be a private individual. Tragically, he died in 2021 after a battle with brain cancer, as confirmed by Wikipedia. Siff has not publicly discussed the details of his illness.

Maggie Siff’s Children

Siff gave birth to a daughter, Lucy, in April 2014, when she was 39 years old. Since her husband’s death, she has raised Lucy primarily on her own. The actress has kept her child out of the public eye, sharing very few personal details.

Maggie Siff’s New Partner or Relationship Status

As of 2025, there is no confirmed information about Maggie Siff dating or having a new partner. Rumors occasionally surface, but the actress has not made any public statements. Given her preference for privacy, it remains an area of uncertainty.

Maggie Siff Net Worth and Career Earnings

Estimated Net Worth (2025)

Maggie Siff’s net worth is estimated at approximately $8 million, according to Social Life Magazine and UrduPoint. However, no independently verified financial disclosure exists, so this figure should be treated as an industry estimate based on her television salaries.

Income Sources: Acting, Endorsements, and Other Ventures

Her primary income comes from television acting. She also earned from film roles and her executive producer credit on A Woman, a Part (2016). The Betterment endorsement provides a steady additional stream. Siff’s upcoming West End theater work may add to her earnings, though stage salaries are typically lower than television.

Maggie Siff Movies and TV Shows: From Mad Men to Billions

Maggie Siff in Mad Men: Role and Impact

Siff played Rachel Menken Katz, an heiress to a department store fortune, during the first season of AMC’s Mad Men (2007–2008). The role was a breakout: she held her own opposite Jon Hamm and earned part of the ensemble’s SAG Award nomination for Outstanding Performance by an Ensemble in a Drama Series. Her character’s nuanced portrayal of a Jewish woman in 1960s New York remains one of the show’s most remembered early arcs.

Maggie Siff in Billions: Wendy Rhoades

On Showtime’s Billions, Siff played Dr. Wendy Rhoades, a performance psychiatrist married to hedge fund king Chuck Rhoades. The role earned her critical acclaim and three Satellite Award nominations for Best Actress in a Drama Series. The show ran for seven seasons, from 2016 to 2023, establishing Siff as a leading television actress.

Complete Filmography (Movies and TV Shows)

Beyond those two landmark roles, Siff appeared in FX’s Sons of Anarchy as Dr. Tara Knowles from 2008 to 2014, a part that earned her two Critics’ Choice Award nominations. She also had early guest spots on Law & Order: SVU, Grey’s Anatomy, Rescue Me, and Third Watch. Her film credits include Push (2009), Leaves of Grass (2010), A Woman, a Part (2016), and One Percent More Humid (2017). For a full list, see her IMDb page.

Maggie Siff Career Timeline

1. 1974 – Born on June 21 in New York City.
2. 2004 – First credited television role on The $treet.
3. 2007 – Cast as Rachel Menken on AMC’s Mad Men (2007–2008).
4. 2008–2014 – Played Dr. Tara Knowles on FX’s Sons of Anarchy.
5. 2009 – Appeared in the film Push: Based on the Novel by Sapphire.
6. 2012 – Married Paul Ratliff.
7. 2014 – Gave birth to daughter Lucy.
8. 2016–2023 – Starred as Dr. Wendy Rhoades on Showtime’s Billions.
9. 2018 – Became television spokesperson for Betterment.
10. 2021 – Husband Paul Ratliff died of brain cancer.
11. 2026 (anticipated) – West End debut in London.

Confirmed vs. Unconfirmed Details About Maggie Siff

Context: Privacy and Career Trajectory

Maggie Siff maintains a notably low profile regarding her personal life, which contrasts sharply with the high-profile nature of her television roles. This privacy makes definitive answers about relationships, net worth, and future plans harder to verify. Her transition from stage to acclaimed TV dramas demonstrates range – from period piece (Mad Men) to contemporary finance thriller (Billions) to gritty biker saga (Sons of Anarchy). Her theater roots remain active, as evidenced by her upcoming West End debut. The conclusion of Billions in 2023 opened new opportunities, but Siff has not announced any major new television projects as of early 2025.

Sources and Quotes

“Maggie Siff established herself as an actress capable of performances suffused with intelligence, strength, and deep reserves of world-weary charisma.”
— Rotten Tomatoes bio

“Maggie Siff is an American actor best known for her seven-season run as Wendy Rhoades in Showtime’s Billions.”
— West End Theatre, November 2025

“She is married to an economist and has one child.”
— Wikipedia (citing published interviews)

Summary: What’s Next for Maggie Siff?

Following the end of Billions, Siff has focused on theatre and film projects. Her upcoming West End debut suggests a continued commitment to stage work. Fans anticipate a possible return to television in a limited series or independent film, though no projects have been announced. Given her preference for privacy, no major social media shift is expected. For more detailed biographical information, read the Wikipedia article on Maggie Siff. You may also be interested in the biographies of other leading actresses: Shonda Rhimes – Biography, Shows, Net Worth & Personal Life and Claire Foy – Biography, Career, and Personal Life in 2025.

Frequently Asked Questions About Maggie Siff