https://www.americanpayroll.org/news-resources/apa-news/news-detail/2022/12/16/three-indiana-counties-state-have-tax-rate-changes-on-january-1
Effective January 1, 2023, three Indiana counties—Greene, Montgomery, and Perry—will have tax rate changes. Also effective January 1, 2023, the state withholding tax rate will be reduced to 3.15%.
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