Certain taxpayers must file an abatement/amended return with Form CA-6 and CA-6A pdf format of CA_6A.pdf
for additional tax periods. These filers include: Corporate excise (decreases); Fiduciary; Pass-through Entity Withholding; Performer Withholding; Lottery Annuity Withholding; Abandoned Deposits; Care & Custody; Controlled Substances; Deeds Excise; Fuels Excise; Motor Vehicle Sales/Use Tax; Cigarette/Tobacco Excise; CCF Surcharges; UBIT; Club Alcohol; Financial Institutions; Insurance; Urban Redevelopment; Ocean Marine; and Public Utilities.

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