Version: 2.0.0

Update

Use this endpoint to update the information on existing CT UC-2 forms that are already created for a specific employer (payer).

POST StateFilings/UC2/Update

Run in Postman

Request Body

Field	Type	Description
SubmissionId	Guid	Optional Unique identifier created by TaxBandits for each submission. Leave empty when creating a new submission.
StateUIRecords	Object[]	Object to identify the records.
SequenceId	String	A unique identifier for this record. Size Range: ..50
RecordId	Guid	Optional A unique identifier generated by TaxBandits when a Form UC-2 return is created. Leave empty when creating a new return.
ReturnHeader	Object	Contains business information.
TaxYear	String	The tax year for which the Form UC-2 is to be filed. Allowed values 2025,2026
Qtr	String	The quarter for which the Form UC-2 is to be filed. Allowed values "Q1", "Q2", "Q3", "Q4"
Business	object	Object to identify the Business Details.
BusinessId	Guid	Optional Use the unique Business ID (Generated by TaxBandits) that you received in the response of the Business CREATE Endpoint. If you do not have a Business ID, ignore the field. By giving the Business ID, you do not have to provide all the business information again.
PayerRef	string	Optional Your unique identifier for the payer. Can replace BusinessId in future requests. Size Range: 50
IsDefaultBusiness	Boolean	When set to TRUE, this business will be set as the default across requests that do not specify a business.
TINDetails	object	TIN information for the business.
Format	string	Specifies how the TIN is passed. Allowed values "PLAIN_TIN" — Pass TIN directly, "TOKENIZED_TIN" — Pass tokenized TIN
TINType	string	Specify the TIN type of the business. Allowed values "EIN", "SSN", "QI-EIN", "ITIN", "WP-EIN", "WT-EIN", "NQI-EIN", "IRSN"
TIN	string	The TIN value according to the Format selected.
IndividualNm	object	Optional Required when TINType is SSN. Provide individual name fields instead of BusinessNm.
FirstNm	string	The first name of the individual. Size Range: 20
MiddleNm	string	Optional Middle name of the individual. Size Range: 20
LastNm	string	The last name of the individual. Size Range: 20
Suffix	string	Optional Suffix of the individual's name. Allowed values "Jr", "Sr", "I", "II", "III", "IV", "V", "VI", "VII"
BusinessNm	string	Legal name of the business. Required when TINType is EIN. Size Range: 75
NameCtrl	string	Name control of the business as registered with the IRS. Size Range: 3-4
DBADetails	object[]	Optional DBA (Doing Business As) information.
DBANm	string	Name of the DBA. Size Range: 75
DBARef	string	Unique identifier for the DBA. Size Range: 1-50
DBAId	Guid	TaxBandits-generated DBA identifier.
Address	object[]	Address information of the DBA.
Address1	string	Street address or PO Box. Size Range: 46
Address2	string	Optional Suite or apartment number. Size Range: 46
City	string	DBA's city. Size Range: 50
ProvinceOrState	string	DBA's province or state name. When the country code is US: Allowed values "AL", "AK", "AZ", "AR", "CA", "CO", "CT", "DE", "DC", "FL", "GA", "HI", "ID", "IL", "IN", "IA", "KS", "KY", "LA", "ME", "MD", "MA", "MI", "MN", "MS", "MO", "MT", "NE", "NV", "NH", "NJ", "NM", "NY", "NC", "ND", "OH", "OK", "OR", "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VT", "VA", "WA", "WV", "WI", "WY", "AS", "FM", "GU", "MH", "MP", "PW", "PR", "VI", "AA", "AE", "AP" When the country code is CA: Allowed values "AB", "BC", "MB", "NB", "NL", "NT", "NS", "NU", "ON", "PE", "QC", "SK", "YT" Note: The size range is set to 50 for all countries except the United States and Canada.
Zipcd	string	DBA's ZIP code. Size Range: 5-16
Country	string	DBA's 2-character country code. Allowed values "US","AF", "AX", "AL", "AG", "AQ", "AN", "AO", "AV", "AY", "AC", "AR", "AM", "AA", "AT", "AS", "AU", "AJ", "BF", "BA", "FQ", "BG", "BB", "BO", "BE", "BH", "BN", "BD", "BT", "BL", "BK", "BC", "BV", "BR", "IO", "VI", "BX", "BU", "UV", "BM", "BY", "CB", "CM", "CA", "CV", "CJ", "CT", "CD", "CI", "CH", "KT", "IP", "CK", "CO", "CN", "CF", "CG", "CW", "CR", "CS", "IV", "HR", "CU", "UC", "CY", "EZ", "DA", "DX", "DJ", "DO", "DR", "TT", "EC", "EG", "ES", "EK", "ER", "EN", "ET", "FK", "FO", "FM", "FJ", "FI", "FR", "FP", "FS", "GB", "GA", "GG", "GM", "GH", "GI", "GR", "GL", "GJ", "GQ", "GT", "GK", "GV", "PU", "GY", "HA", "HM", "VT", "HO", "HK", "HQ", "HU", "IC", "IN", "ID", "IR", "IZ", "EI", "IS", "IT", "JM", "JN", "JA", "DQ", "JE", "JQ", "JO", "KZ", "KE", "KQ", "KR", "KN", "KS", "KV", "KU", "KG", "LA", "LG", "LE", "LT", "LI", "LY", "LS", "LH", "LU", "MC", "MK", "MA", "MI", "MY", "MV", "ML", "MT", "IM", "RM", "MR", "MP", "MX", "MQ", "MD", "MN", "MG", "MJ", "MH", "MO", "MZ", "WA", "NR", "BQ", "NP", "NL", "NC", "NZ", "NU", "NG", "NI", "NE", "NF", "CQ", "NO", "MU", "OC", "PK", "PS", "LQ", "PM", "PP", "PF", "PA", "PE", "RP", "PC", "PL", "PO", "RQ", "QA", "RO", "RS", "RW", "TB", "RN", "WS", "SM", "TP", "SA", "SG", "RI", "SE", "SL", "SN", "NN", "LO", "SI", "BP", "SO", "SF", "SX", "OD", "SP", "PG", "CE", "SH", "SC", "ST", "SB", "VC", "SU", "NS", "SV", "WZ", "SW", "SZ", "SY", "TW", "TI", "TZ", "TH", "TO", "TL", "TN", "TD", "TS", "TU", "TX", "TK", "TV", "UG", "UP", "AE", "UK", "UY", "UZ", "NH", "VE", "VM", "VQ", "WQ", "WF", "WI", "YM", "ZA", "ZI"
Address	object	Primary address of the business.
Address1	string	Street address or PO Box of the business. Size Range: 46
Address2	string	Optional Suite or apartment number of the business. Size Range: 46
City	string	City of the business. Size Range: 50
ProvinceOrState	string	Province or state name of the business. When the country code is US: Allowed values "AL", "AK", "AZ", "AR", "CA", "CO", "CT", "DE", "DC", "FL", "GA", "HI", "ID", "IL", "IN", "IA", "KS", "KY", "LA", "ME", "MD", "MA", "MI", "MN", "MS", "MO", "MT", "NE", "NV", "NH", "NJ", "NM", "NY", "NC", "ND", "OH", "OK", "OR", "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VT", "VA", "WA", "WV", "WI", "WY", "AS", "FM", "GU", "MH", "MP", "PW", "PR", "VI", "AA", "AE", "AP" When the country code is CA: Allowed values "AB", "BC", "MB", "NB", "NL", "NT", "NS", "NU", "ON", "PE", "QC", "SK", "YT" Note: The size range is set to 50 for all countries except the United States and Canada.
ZipCd	string	ZIP code of the business. Size Range: 5-16
Country	string	2-character country code of the business. Allowed values "US","AF", "AX", "AL", "AG", "AQ", "AN", "AO", "AV", "AY", "AC", "AR", "AM", "AA", "AT", "AS", "AU", "AJ", "BF", "BA", "FQ", "BG", "BB", "BO", "BE", "BH", "BN", "BD", "BT", "BL", "BK", "BC", "BV", "BR", "IO", "VI", "BX", "BU", "UV", "BM", "BY", "CB", "CM", "CA", "CV", "CJ", "CT", "CD", "CI", "CH", "KT", "IP", "CK", "CO", "CN", "CF", "CG", "CW", "CR", "CS", "IV", "HR", "CU", "UC", "CY", "EZ", "DA", "DX", "DJ", "DO", "DR", "TT", "EC", "EG", "ES", "EK", "ER", "EN", "ET", "FK", "FO", "FM", "FJ", "FI", "FR", "FP", "FS", "GB", "GA", "GG", "GM", "GH", "GI", "GR", "GL", "GJ", "GQ", "GT", "GK", "GV", "PU", "GY", "HA", "HM", "VT", "HO", "HK", "HQ", "HU", "IC", "IN", "ID", "IR", "IZ", "EI", "IS", "IT", "JM", "JN", "JA", "DQ", "JE", "JQ", "JO", "KZ", "KE", "KQ", "KR", "KN", "KS", "KV", "KU", "KG", "LA", "LG", "LE", "LT", "LI", "LY", "LS", "LH", "LU", "MC", "MK", "MA", "MI", "MY", "MV", "ML", "MT", "IM", "RM", "MR", "MP", "MX", "MQ", "MD", "MN", "MG", "MJ", "MH", "MO", "MZ", "WA", "NR", "BQ", "NP", "NL", "NC", "NZ", "NU", "NG", "NI", "NE", "NF", "CQ", "NO", "MU", "OC", "PK", "PS", "LQ", "PM", "PP", "PF", "PA", "PE", "RP", "PC", "PL", "PO", "RQ", "QA", "RO", "RS", "RW", "TB", "RN", "WS", "SM", "TP", "SA", "SG", "RI", "SE", "SL", "SN", "NN", "LO", "SI", "BP", "SO", "SF", "SX", "OD", "SP", "PG", "CE", "SH", "SC", "ST", "SB", "VC", "SU", "NS", "SV", "WZ", "SW", "SZ", "SY", "TW", "TI", "TZ", "TH", "TO", "TL", "TN", "TD", "TS", "TU", "TX", "TK", "TV", "UG", "UP", "AE", "UK", "UY", "UZ", "NH", "VE", "VM", "VQ", "WQ", "WF", "WI", "YM", "ZA", "ZI"
ContactDetails	object[]	Details of the person the IRS can contact regarding the given business.
FirstNm	string	First name of the contact person. Size Range: 20
MiddleNm	string	Optional Middle name of the contact person. Size Range: 20
LastNm	string	Last name of the contact person. Size Range: 20
Suffix	string	Optional The suffix of the contact person. Allowed values "Jr", "Sr", "I", "II", "III", "IV", "V", "VI", "VII"
Phone	string	Optional Phone number of the contact person. Size Range: 10 digits
PhoneExtn	string	Optional Phone extension number. Size Range: 5
Email	string	Optional Email address of the contact person. Size Range: ..100
Fax	string	Optional Fax number of the contact person. Size Range: 10 digits
BusinessType	String	Legal structure of the business. Allowed values "ESTE", "PART", "CORP", "EORG", "SPRO", "SLGOV"
SigningAuthority	Object	Details of the person authorized to sign the return.
FirstNm	String	First name of the signatory. Size Range: 20
MiddleNm	String	Optional Middle name of the signatory. Size Range: 20
LastNm	String	Last name of the signatory. Size Range: 20
Suffix	String	Optional The suffix of the signatory. Allowed values "Jr", "Sr", "I", "II", "III", "IV", "V", "VI", "VII"
Phone	String	Optional Phone number of the signatory. Size Range: 10 digits
PhoneExtn	String	Optional Phone extension number of the signatory. Size Range: 5
BusinessMemberType	String	Optional Title or role of the signatory. Allowed values "CORPORATESECRETARY", "SECRETARYTREASURER", "PARTNER", "GENERALPARTNER", "LIMITEDPARTNER", "LLCMEMBER", "MANAGINGMEMBER", "MANAGER", "TAXMATTERPARTNER", "PRESIDENT", "VICEPRESIDENT", "CORPORATETREASURER", "TREASURER", "ASSISTANTTREASURER", "CHIEFACCOUNTINGOFFICER", "CHIEFEXECUTIVEOFFICER", "CHIEFFINANCIALOFFICER", "TAXOFFICER", "CHIEFOPERATINGOFFICER", "CORPORATEOFFICER", "EXECUTIVEDIRECTOR", "DIRECTOR", "CHAIRMAN", "EXECUTIVEADMINISTRATOR", "RECEIVER", "PASTOR", "ASSISTANTTORELIGIOUSLEADER", "REVEREND", "PRIEST", "MINISTER", "RABBI", "LEADEROFRELIGIOUSORGANIZATION", "SECRETARY", "DIRECTOROFTAXATION", "DIRECTOROFPERSONNEL", "ADMINISTRATOR", "EXECUTOR", "TRUSTEE", "FIDUCIARY", "OWNER", "SOLEPROPRIETOR", "MEMBER", "SOLEMEMBER", "REPORTINGAGENT"
ReturnData	Object	Contains the return information.
FormUC2	Object	Connecticut unemployment insurance contribution return.
UIIdNum	String	Connecticut unemployment insurance (UI) registration number. Sample Format: XX-XXXXX-X-XX
IsNoWageRptd	Boolean	Optional When true, indicates that no wages are reported for this quarter.
UITaxRate	Number	The employer's assigned UI contribution rate for the period.
TotGrossWages	Number	Total gross wages paid to all employees for the quarter. Size Range: 0-9999999999.99
TotExcessWages	Number	Total wages paid in excess of the Connecticut taxable wage base for the quarter. Size Range: 0-9999999999.99
TotTaxableWages	Number	Total wages subject to Connecticut unemployment insurance tax for the quarter. Size Range: 0-9999999999.99
UITaxDue	Number	Total unemployment insurance tax due for the quarter. Size Range: 0-9999999999.99
Penalty	Number	Optional Penalty amount due for the quarter. Size Range: 0-9999999999.99
Interest	Number	Optional Interest amount due for the quarter. Size Range: 0-9999999999.99
LateFilingPenalty	Number	Optional Penalty amount assessed for late filing of the return. Size Range: 0-9999999999.99
NumOfEmp	Object	Object that contains the number of employees reported for each month of the quarter.
TotMonth1Emp	Number	Number of employees reported for the first month of the quarter.
TotMonth2Emp	Number	Number of employees reported for the second month of the quarter.
TotMonth3Emp	Number	Number of employees reported for the third month of the quarter.
EmpDetails	Object[]	Object that contains the wage details reported for each employee for the quarter.
EmployeeSequenceId	String	A unique identifier for this employee record. Size Range: ..50
EmployeeId	Guid	Optional Use the unique Employee ID (Generated by TaxBandits) that you received in a previous response. If you do not have an Employee ID, ignore the field.
EmployeeRef	String	Optional Your unique identifier for the employee. Can replace EmployeeId in future requests. Size Range: 50
SSN	String	Social Security Number of the employee. Sample Format: XXX-XX-XXXX
FirstNm	String	First name of the employee. Size Range: 20
MiddleNm	String	Optional Middle name of the employee. Size Range: 20
LastNm	String	Last name of the employee. Size Range: 20
Suffix	String	Optional Suffix of the employee's name. Allowed values "Jr", "Sr", "I", "II", "III", "IV", "V", "VI", "VII"
GrossWages	Number	Gross wages paid to the employee for the quarter. Size Range: 0-9999999999.99

Response Body

Field	Type	Description
SubmissionId	Guid	Unique identifier for a submission.
SuccessRecords	object[]	Provides detailed information about the success status of Form UC-2 records.
SequenceId	string	A unique reference ID for the submission that can be used to identify a particular record. The Sequence ID will be returned in the response for your reference.
BusinessId	Guid	Unique identifier for the business (payer) generated by TaxBandits.
PayerRef	string	Unique identifier for the business (payer) provided by you.
RecordId	Guid	A unique identifier generated by TaxBandits when a Form UC-2 return is created.
FormType	string	Type of form.
EmployeeData	object[]	Returns the TaxBandits-generated Employee ID for each employee reported on the return.
EmployeeId	Guid	Unique identifier for the employee generated by TaxBandits.
EmployeeRef	string	Unique identifier for the employee provided by you.
Status	string	Returns the record status.
StatusTs	string	Returns the date and time when the return was created.
Info	string	Provides additional information about the return.
Errors	object[]	Displays error information related to the state returns of Form UC-2.
Id	string	Returns the validation error ID.
Name	string	Name of the validation error.
ErrorRecords	object[]	Provides detailed information about the error status of Form UC-2 records.
SequenceId	string	A unique reference ID for the submission that can be used to identify a particular record. The Sequence ID will be returned in the response for your reference.
RecordId	Guid	Unique identifier for the record.
Errors	object[]	Displays detailed error information.
Id	string	Returns the validation error ID.
Name	string	Name of the validation error.
Message	string	Description of the validation error.

Request JSON

Sample 1

{
"SubmissionId": null,
"StateUIRecords": [
  {
    "SequenceId": "001",
    "RecordId": null,
    "ReturnHeader": {
      "TaxYear": "2026",
      "Qtr": "Q3",
      "Business": {
        "IsDefaultBusiness": true,
        "TINDetails": {
          "Format": "PLAIN_TIN",
          "TINType": "EIN",
          "TIN": "487999804"
        },
        "IndividualNm": {
          "FirstNm": "James",
          "MiddleNm": "A",
          "LastNm": "Anderson",
          "Suffix": "Jr"
        },
        "BusinessNm": "Snowdaze LLC",
        "NameCtrl": "FIRE",
        "DBADetails": {
          "DBANm": "Iceberg Icecreams",
          "DBARef": "DBA1001",
          "DBAId": null,
          "Address": {
            "Address1": "123 Main St",
            "Address2": "Suite 1001",
            "City": "Rock Hill",
            "ProvinceOrState": "SC",
            "ZipCd": "29730",
            "Country": "US"
          }
        },
        "Address": {
          "Address1": "123 Main St",
          "Address2": "Suite 1001",
          "City": "Rock Hill",
          "ProvinceOrState": "SC",
          "ZipCd": "29730",
          "Country": "US"
        },
        "ContactDetails": {
          "FirstNm": "James",
          "MiddleNm": "A",
          "LastNm": "Anderson",
          "Suffix": "Jr",
          "Phone": "8035551234",
          "PhoneExtn": "101",
          "Email": "contact@snowdaze.com",
          "Fax": "8035555678"
        },
        "BusinessType": "ESTE",
        "SigningAuthority": {
          "FirstNm": "Ambrane",
          "MiddleNm": "A",
          "LastNm": "Cavil",
          "Suffix": "Jr",
          "Phone": "8035551000",
          "PhoneExtn": "111",
          "BusinessMemberType": "ADMINISTRATOR"
        }
      }
    },
    "ReturnData": {
      "FormUC2": {
        "UIIdNum": "05-61345-5-98",
        "IsNoWageRptd": false,
        "UITaxRate": "2",
        "TotGrossWages": 20000.00,
        "TotExcessWages": 6000,
        "TotTaxableWages": 14000,
        "UITaxDue": 280,
        "Penalty": 100,
        "Interest": 200,
        "LateFilingPenalty": 100,
        "NumOfEmp": {
          "TotMonth1Emp": 1,
          "TotMonth2Emp": 1,
          "TotMonth3Emp": 0
        },
        "EmpDetails": [
          {
            "EmployeeSequenceId": "01",
            "EmployeeId": null,
            "EmployeeRef": "Emp690",
            "SSN": "001-45-6924",
            "FirstNm": "John",
            "MiddleNm": "S",
            "LastNm": "Smith",
            "Suffix": "Jr",
            "GrossWages": 10000.00
          },
          {
            "EmployeeSequenceId": "02",
            "EmployeeId": null,
            "EmployeeRef": null,
            "SSN": "001-25-6925",
            "FirstNm": "Caleb",
            "MiddleNm": null,
            "LastNm": "Lesnar",
            "Suffix": "Jr",
            "GrossWages": 10000.00
          }
        ]
      }
    }
  }
]
}

Response JSON

Success Response - This is a sample response for successful API requests.

{
"SubmissionId": "01a0e6fd-d1fc-751b-b715-66fafcb9d8e2",
"SuccessRecords": [
  {
    "SequenceId": "001",
    "BusinessId": "16deedbd-4e22-4366-b85a-a209f00425bc",
    "PayerRef": null,
    "RecordId": "01a0e6fd-d6fd-752b-a006-75a718c940f8",
    "FormType": "UC2",
    "EmployeeData": [
      {
        "EmployeeId": "73e73fd8-739b-4914-bdfc-c2a6c6c91a05",
        "EmployeeRef": "Emp690"
      },
      {
        "EmployeeId": "1a0baafd-f18d-45f8-9624-2a508cf19292",
        "EmployeeRef": null
      }
    ],
    "Status": "CREATED",
    "StatusTs": "2026-09-28 03:49:50 -04:00",
    "Info": null,
    "Errors": null
  }
],
"ErrorRecords": null,
"Errors": null
}

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1099 Automation

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W-2 Automation

941/940 Automation

1098-T Automation

ACA Automation

Extension Automation

1042-S Automation

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HOA Software

Reselling Platform

HCM Providers

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Request Body

Response Body

Request JSON​

Response JSON​

Request JSON

Response JSON