UBS to hand over names of 4,450 clients to U.S.

The IRS said Americans would no longer be able to evade taxes so easily by hiding their assets in offshore accounts.

The agreement comes as U.S. tax authorities conduct a criminal investigation into Americans who used Swiss bank accounts at UBS to avoid paying U.S. taxes.

The settlement follows demands from the U.S. authorities that the bank hand over details on more than 50,000 customers. According to the settlement, U.S. tax authorities will gain access to 4,450 accounts of Americans who have accounts with UBS, and will drop a lawsuit against UBS in federal court demanding the names.

However, the agency expects to have access to hundreds of additional accounts through other agreements. An IRS official said the total number of names disclosed could be in the "high 5,000s."

"Wealthy Americans who have hidden their money offshore will find themselves in a jam," said IRS Commissioner Douglas Shulman. "You can expect us to continue to be aggressive with institutions that are helping Americans avoid taxes."

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