Kate Howarth grew up in Darlington (Sydney), Parramatta, and in Brewarrina in far western New South Wales. Her family, originally from the Nyngan, Bourke, and Cobar areas, had moved to Sydney during World War II in search of work.
Forced to leave school at fourteen, she followed an eclectic career: factory worker, Avon lady, corporate executive, and restaurateur, to name a few.
In her 50s, she began writing her memoir, Ten Hail Marys. Shortlisted for the David Unaipon Award in 2008 (when Marie Munkara won for Every Secret Thing), it was published by UQP, and went on to win the Age Book of the Year Award (Non-fiction) and be shortlisted for the Prize for Indigenous Writing (Victorian Premier's Literary Awards).
In late 2013, Howarth was interviewed for Dr Anita Heiss's In Conversation with BlackWords series, published on AustLit.
In 2015, she published the follow-up to Ten Hail Marys, Settling Day.