The bills keep piling up at troubled Tenet ( THC). The struggling hospital chain faces a new tax bill -- on top of a big parachute for its ousted CEO -- even as its cash flow is eroding. And the liabilities, stemming from government investigations and patient lawsuits, could just keep on coming. "Our sense is that the government is a long way from resolving its investigations," said Stephens analyst Nancy Weaver, who rates the stock a hold. "Tenet's issues will not succumb to a quick fix." Already, the company has lost one big round with the feds. Tenet revealed Monday that it has come up short in its battle with Uncle Sam. The company has been ordered to repay $269 million in back taxes and penalties to satisfy alleged deficiencies dating back to 1995. That amount, equal to double the cash on Tenet's balance sheet, far exceeds the potential $100-million tax liability Tenet projected in past regulatory filings. In a new filing issued Monday, Tenet said it will fight the ruling, which was handed down late last week by the Internal Revenue Service. The ruling "contains several adjustments with which we disagree," Tenet stated. "We plan to appeal each of these disputed adjustments, and no payment will be due during the appeals process." But interest, which already accounts for $112 million of Tenet's tax bill, could swell in the meantime. Interest on the disputed taxes will jump from 5% to 7% by the end of this month. That rate will then be subject to quarterly revisions as Tenet moves through an appeals process that could stretch for more than a year. The IRS has taken exception to a tax deduction related to Tenet's old psychiatric division. Tenet exited the psychiatric business after being charged with locking up juvenile patients for treatment they didn't need. Roughly a decade later, Tenet is once again accused of providing unnecessary medical treatment and bilking federal agencies.