New York State Department of Taxation and FinanceCorporation Tax MeF Acceptance Testing System for Tax Year 2025

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Test 3—CT-5C

Blank or zero field values are not included. Fields requiring software calculations are not provided. Automated Clearing House debit payment is required if test results in a balance due. Please use the two-digit codes provided to you to replace the 6th and 7th digits in each test Employer Identification Number.

Test Scenario

Extension request for first tax year being added to an existing combined group filing

Extension form: CT-5
Liability period: 01-01-2025–12-31-2025
Employer Identification Number: 00219XX03
Legal Name: CTEF5C (followed by a space, then your software ID)*
* For this test only, choose and enter additional characters from "2025 Test corporation with 75
character limit for Legal Name Testing" to produce a total of 75 characters.
File number: Software calculated 
Telephone number: 518-555-2626
Address: 5 WA Harriman Campus Blvd Unit 538, Albany, NY 12227
State of incorporation: New York State
Date of incorporation: 06-01-2016
Main returns: CT-33, CT33-M
Employer Identification Number of combined group’s designated Agent: 002190342
Line D. If this extension request is for the first tax year that you are being added to an existing combined group filing a combined return, mark an X in the box: (check this box)