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CT-945 CSVfile specification
Business Use excel file specification
CT-OP-210 excel file specification
1099-NEC CSV file specification
1099-Misc CSV file specification
CT-472 OCC CSV file specification 09-02-2022 final version
SUTOS-114 CSV file specification
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2017Nonfiler
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AU-351
2018 Legislative Summary
Legislative Summary
2024 Connecticut State Tax Developments
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