The state of Connecticut requires both a Withholding Tax ID and a State Unemployment Tax ID, both formats and links to apply are below.
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Withholding Tax ID
Agency Contact Info: Commissioner of Revenue Services Department of Revenue Services 450 Columbus Boulevard Hartford, CT 06103 (860) 297-5650
Format: #######-000 or ########-000
Applied For: Not Accepted
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Unemployment Tax ID
Agency Contact Info: Connecticut Department of Labor Employment Security Division 200 Folly Brook Boulevard Wethersfield, CT 06109 860-263-6000
Format: ##-###-##
Applied For: Not Accepted