Maggie Siff – Biography, Net Worth, and Career

What is Maggie Siff’s Net Worth and Career Earnings?

Maggie Siff, the American actress best known for her roles in Mad Men, Sons of Anarchy, and Billions, has built a substantial career in television and film. As of 2026, her estimated net worth stands at $8 million, according to multiple sources including Social Life Magazine and Tuko. This wealth has been primarily accumulated through her long-running television roles and film appearances.

Siff's financial success reflects her steady presence on high-profile cable dramas. She has often been described as an undervalued talent whose consistent work has gradually earned her prestige and financial stability. Before her acting breakthrough, she worked as a temp at a hedge fund, a background that adds an interesting layer to her portrayal of characters in finance-driven narratives.

Her earning power is also supported by film roles and occasional theater work. While exact salary figures for individual projects are not publicly disclosed, the longevity of her television commitments suggests a steady and substantial income stream over the past decade and a half.

Who is Maggie Siff Married To? Does She Have Children?

Maggie Siff was married to Paul Ratliff, a respected psychologist and mental health practitioner. They married in October 2012. Tragically, Ratliff passed away in 2021 due to brain cancer, a loss that Siff has handled with remarkable privacy and resilience. Despite this personal tragedy, she continued to star in critically acclaimed dramas.

Her Daughter and Family Life

The couple had one daughter together, Lucy Ratliff, born in April 2014 (some sources cite late 2013). Siff has consistently kept details about her child out of the public eye, rarely discussing her family in interviews. This commitment to privacy stands in contrast to many of her peers and has only increased public curiosity about her personal life.

Before her marriage, Siff was born in the Bronx, New York, to an Ashkenazi Jewish father who was a stage actor. She graduated from Bryn Mawr College in 1996 and later earned a Master of Fine Arts in acting from NYU's Tisch School of the Arts. This classical training laid the foundation for her nuanced performances.

How Old is Maggie Siff?

Maggie Siff was born on June 21, 1974 in the Bronx, New York, making her 51 years old as of 2026. She stands approximately 5 feet 5 inches (1.65 m) tall. Her age places her among a generation of actresses who came to prominence in the late 2000s and have since become fixtures of prestige television.

Her educational background includes a Bachelor of Arts from Bryn Mawr College and a Master of Fine Arts from NYU's Tisch School of the Arts. This academic grounding in the humanities and theater has informed her approach to character work, often bringing intellectual depth to roles that could be merely functional in other hands.

What Movies and TV Shows Has Maggie Siff Starred In?

Television Career

Siff's most defining television role is Dr. Wendy Rhoades on Showtime's Billions, which ran for seven seasons from 2016 to 2023. She played a psychiatrist and performance coach at a hedge fund, a role that earned her a Satellite Award for Best Actress in a Drama Series in 2018.

Before Billions, she portrayed Dr. Tara Knowles on FX's Sons of Anarchy from 2008 to 2014, appearing across six seasons as a surgeon drawn into the orbit of a motorcycle gang. This role brought her two Critics' Choice Television Award nominations for Best Supporting Actress in a Drama Series.

Her breakout role was Rachel Menken Katz on AMC's Mad Men in 2007–2008. Although she appeared in only nine episodes, her performance as a department store heiress and love interest of Don Draper left a lasting impression. The cast received a Screen Actors Guild Award nomination for Outstanding Performance by an Ensemble in a Drama Series.

Additional television credits include guest appearances on Law & Order: SVU, Grey's Anatomy, Nip/Tuck, Rescue Me, and Law & Order, as well as the TV movie Concussion.

Film Work

Siff has also appeared in several films, though her movie career is less prominent than her television work. Notable roles include:

• A Woman, a Part (2016) – starring as the main character
• Push (2009) – playing Teresa Stowe, a psychic surgeon (Stitch)
• Leaves of Grass (2010) – portraying Rabbi Renannah Zimmerman
• Then She Found Me (2007) – as Lily
• Funny People (2009) – as Rachel
• One Percent More Humid (2017) – minor role as Sam Bennet
• Concussion (2013) – as Sam Bennet (sources vary on whether this is a film or TV role)

In 2023, she starred in the Netflix film Leave the World Behind. Upcoming projects include the biographical drama Michael (2025), directed by Antoine Fuqua, about the life of Michael Jackson.

Does Maggie Siff Have an Instagram or Social Media?

Maggie Siff does not maintain any verified public social media accounts. There is no official Instagram, Twitter, or Facebook page under her name. Fan-run accounts exist, but they are unofficial and not curated by Siff or her representatives. This absence from social media is deliberate and aligns with her preference for privacy.

For fans seeking updates on her work, reliable sources include her Wikipedia page, IMDb profile, and entertainment news outlets. The West End Theatre profile provides information on her stage work, including her 2025 West End debut in London.

What is the Timeline of Maggie Siff's Life and Career?

1. 1974 – Born in the Bronx, New York on June 21.
2. 1996 – Earns a B.A. from Bryn Mawr College.
3. 2003 – Completes an M.F.A. in acting from NYU's Tisch School of the Arts.
4. 2007 – Lands the role of Rachel Menken Katz on AMC's Mad Men.
5. 2008 – Joins FX's Sons of Anarchy as Dr. Tara Knowles.
6. 2012 – Marries psychologist Paul Ratliff.
7. 2014 – Daughter Lucy Ratliff is born.
8. 2016 – Begins her seven-season run as Dr. Wendy Rhoades on Showtime's Billions.
9. 2018 – Wins a Satellite Award for Best Actress in a Drama Series for Billions.
10. 2021 – Husband Paul Ratliff passes away due to brain cancer.
11. 2023 – Billions series finale airs; stars in Netflix film Leave the World Behind.
12. 2025 – Makes her West End debut in London; upcoming film Michael is released.

What is Confirmed and Unconfirmed About Maggie Siff's Personal Life?

How Did Maggie Siff Build Her Career?

Maggie Siff's career trajectory demonstrates a strategic shift from supporting roles to leading a major cable series. Her breakout on Mad Men positioned her as a serious dramatic actress, leading to larger responsibilities on Sons of Anarchy and eventually Billions, where she was the sole female lead in a male-dominated financial drama. Her classical training at NYU and an Ivy League education at Bryn Mawr add depth to her performances, setting her apart from many contemporaries.

Privacy is a defining aspect of Siff's public persona. She deliberately avoids social media and does not leverage her personal life for publicity. This choice has arguably increased public curiosity about her family but also reinforces her image as a dedicated artist. She is part of a cohort of classically trained actresses who balance high-end television with theater work, a path that adds to her credibility as a serious performer.

Where Can I Find Reliable Information About Maggie Siff?

The most authoritative sources for Maggie Siff's biography and filmography are her Wikipedia page and IMDb profile. These provide verified details on her education, roles, and career milestones. For net worth estimates, Celebrity Net Worth offers third-party calculations based on industry data. Her West End Theatre profile provides updates on her stage work and upcoming projects. For aggregated ratings and reviews, Rotten Tomatoes is a useful reference.

One notable quote from her career summary describes her as "one of television's most undervalued assets who has corrected to prestige through her enduring performances in high-profile cable dramas." This sentiment captures the respect she commands within the industry despite maintaining a low public profile.

What is the Most Important Thing to Know About Maggie Siff?

Maggie Siff is a highly trained actress who has delivered memorable performances across three iconic television series—Mad Men, Sons of Anarchy, and Billions—while maintaining a fiercely private personal life. Her estimated net worth of $8 million reflects a career built on steady, quality work rather than flashy headlines. As she moves into theater and new film projects, she remains a respected figure in American drama.

For similar profiles, read about the Full cast of Billions: Where are they now? or explore the Best Mad Men guest stars ranked.

Frequently Asked Questions About Maggie Siff