The 28-year-old actress is known to have earned 1.5 million pounds through her films and commercial deals with fashion firms, reported Sun online.
"Keira took home 20,000 pounds in dividends from the company in 2012 and a salary of 11,000 pounds. Her biggest expenditure put through the books was 41,000 pounds on security but she spent little else," a source said.
"Her travel costs were just over 4,000 pounds and she didn't pay for a personal trainer, despite spending almost 1,000 pounds on one the year before. The accounts also show that she did not shell out a penny on clothes and make-up," the source added.