[6][7] Peltz Beckham made her film debut as Mackenzie in the Christmas comedy Deck the Halls (2006).

[5] She later co-starred as Becki in the comedy film Harold (2008), and in June 2008, she appeared in the music video for Miley Cyrus's single "7 Things.

[10] In 2013, Peltz Beckham began appearing as part of the main cast in A&E's drama-thriller series Bates Motel.

[15] She then joined the cast of the dark comedy film Youth in Oregon (2016), playing Annie Gleason.

[17] Peltz Beckham was cast as Chrissy Monroe in the Hulu drama series When the Street Lights Go On, based on a Black List script of the same name.

[30] She has frequently mentioned on social media her friendship with American actress and singer Selena Gomez, with whom she shares a tattoo.