CT-2658-ATT: Attachment to Report of Estimated Tax for Corporate Partners; Payments due April 15, June 16, September 15, 2025, and January 15, 2026 (2025)

Who files this form

Form CT-2658-ATT is a partnership attachment for allocating estimated tax payments to corporate partners. It is for payments on behalf of C corporations only.

What you'll need

Have the following information ready:

• The partnership’s legal name and employer identification number (EIN).
• Each corporate partner’s legal name and EIN.
• Each partner’s business address, including city, state, and ZIP code.
• Each partner’s contact name and telephone number.
• Each partner’s percentage of ownership, New York source income, and amount of estimated tax paid.

The form also asks for page totals for New York source income and estimated tax paid.

Common mistakes

• Do not use this attachment for payments on behalf of partners other than C corporations. The form states that it is for C corporations only.
• Do not leave out additional attachments when needed. The form directs you to attach additional Forms CT-2658-ATT if necessary.

Questions people ask

What is Form CT-2658-ATT used for?

It is an attachment to the Report of Estimated Tax for Corporate Partners. It shows the allocation of estimated tax to corporate partners and is for payments on behalf of C corporations only.

What if I need more space for corporate partners?

Attach additional Forms CT-2658-ATT if necessary.

Which amounts do I report for each partner?

The form asks for each partner’s New York source income and amount of estimated tax paid. It also asks for the partner’s percentage of ownership.

Do I need totals for each page?

Yes. The form has page-total fields for New York source income and the amount of estimated tax paid.

Official sources

• https://www.tax.ny.gov/pdf/2025/corp/ct2658att_2025_fill_in.pdf