Being a celebrity is no insulation against IRS penalties.

Actress Lindsay Lohan had a tax lien slapped against house in Encino, Calif., for failing to pay 2009 taxes. According to the lien, she owes $93,701,57 in back taxes and penalties.

Lohan's business manager refused to comment. But "sources close to Lindsay" told TMZ that the 25-year-old actress was unaware of the debt and would pay it as soon as possible. The sources said Lohan had recently changed management teams and the debt must have been lost in the shuffle.

Lohan has been in the news with a string of financial troubles in recent years, as well as facing criminal charges of shoplifting a necklace. She has been in and out of rehab since 2007 and did several short stints in jail over DUI arrests and probation violations. She apparently lost several film roles because producers said she was uninsurable.

She sued E-Trade in 2010 over a commercial featuring a "milkaholic" baby named Lindsay. The suit was settled out of court, and Lohan reportedly received some money.

This week, she was sued by a photographer who said he was hit by a car she was riding in.

She recently completed court-ordered community service at the Los Angeles County morgue.

Lohan should be able to find the cash to pay off Uncle Sam: She got $1 million for posing nude in the January-February issue of Playboy.

More from MSN Money:

• In defense of Kim Kardashian's taxes
• 5 tax breaks that help the rich get richer
• IRS offers deal on overseas cash
• Top tax tip: Open your mail
• IRS ups audits of millionaires
• Accountant accused of failing to pay heiress' taxes