Tax havens cost the average Illinois taxpayer $508, a new report from Illinois PIRG says.

The havens allow corporations and wealthy individuals to shift their income offshore. That means other taxpayers have to make up the difference, the group says. So do businesses too small to have their own havens.

The small businesses pay an extra $2,556, PIRG says.

Read Illinois PIRG's press release here.

PIRG backs the Stop Tax Haven Abuse Act (H.R. 2669) and Cut Unjustified Tax Loopholes Act (S.2075) legislation, and is calling on U.S. Rep. Judy Biggert (R-Ill.) to back the House bill.

Read a summary of the Stop Tax Have Abuse Act here.

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Judy Biggert