Relating to: interest rates on late, nondelinquent taxes and on overpayments. (FE)

Summary

The bill revises Wisconsin tax statutes to require unpaid taxes during filing extensions to accrue interest at 12% per year, to charge 1% per month interest on estimated tax liabilities, and to obligate the Department of Revenue to pay 3% annual interest on any refunds. It affects individuals, corporations and pass‑through entities that file state returns, and aligns state extension periods with federal deadlines.

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