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Department of Taxation and Finance

Corporation tax e-file information for software developers

Important updates for tax year 2020

CT-400 Business object (BO) for tax year 2020: we removed the TOT_PYMT_ENCSD_AMT field. If your software is approved for tax year 2020, you must update and use tax year 2020 software to submit these estimated payments. If your software is not approved for tax year 2020, we will give partial approval for CT-400.

We will use the address provided in the tiCorp business object address fields for mailing; it is imperative that a complete and accurate address is provided. In addition, you must display the Tax Department address fields on any New York State tax return filers view or print. The Tax Department uses MAIL_LN_2_ADR as the primary address line, and MAIL_LN_1_ADR to capture any address data overflow from MAIL_LN_2_ADR, followed by In Care Of Name (omit the care of name if there is not enough space). The address overflow should not simply cut off at character position 30 and overflow the remaining characters to MAIL_LN_1_ADR; the overflow data must be a logical unit, for example, overflow APT 5A instead of APT on one line and 5A on another.

The New York State Department of Taxation and Finance participates in the Fed/State 1120 Corporation Tax e-file program, under the IRS MeF architecture. Electronic return originators (EROs) authorized by the IRS to e-file federal corporation tax returns are also authorized to e-file corporation tax returns with New York State. 

All corporation tax software must pass a series of tests each year. Using the New York State test packet, software developers must: 

  • submit returns via the IRS assurance test system (ATS) test site for every return the software supports, and
  • provide a separate software vendor identification (ID) for each software product.

The New York State Tax Department will approve the software vendor ID once all forms testing is completed successfully.

For the current status of MeF production systems, see MeF Status Page.

Tax year 2021

Tax year 2020

Tax year 2019

Tax year 2018

Resources

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