When Microsoft Corp. won a $94 million income tax refund from the California Office of Tax Appeals in February, it was considered one of the biggest victories for corporate taxpayers ever in California. Now it’s unclear if Microsoft will get that refund, or if other multinationals with similar claims will either. A law passed in June reversed the ruling upholding Microsoft’s refund, and the first two lawsuits challenging the reversal landed last week.

The intent of the new law (S.B. 167) is to avoid $1.3 billion in refunds to companies with similar claims pending for past tax years and $200 million a year in refunds going forward. The law does this by declaring that the California Franchise Tax Board’s position in Microsoft’s case pertaining to the tax treatment of income repatriated from abroad has been law since it issued a legal notice on the subject in 2006.

The newly filed lawsuits from the California Taxpayers Association and National Taxpayers Union make it unclear when the dust will settle.

On this episode of Talking Tax, Bloomberg Tax senior correspondent Laura Mahoney talks to Gina Rodriquez and Josh Booth, principals in the Sacramento office of global tax services firm Ryan LLC, about what the tax changes mean for other multinationals and for California.

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