Form ST-220-TD at a glance
What it is: Form ST-220-TD is the Department of Taxation and Finance Contractor Certification pursuant to Tax Law Section 5-a, as amended, effective April 26, 2006.
Who signs: Form ST-220-TD must be signed by a person authorized to make the certification on behalf of the contractor, and the acknowledgement on page 4 of this form must be completed before a notary public.
Tax Law section 5-a, as amended, effective April 26, 2006, requires certain contractors awarded certain state contracts valued at more than $100,000 to certify to the Tax Department that they are registered to collect New York State and local sales and compensating use taxes, if they made sales delivered by any means to locations within New York State of tangible personal property or taxable services having a cumulative value in excess of $300,000, measured over a specified period. In addition, contractors must certify to the Tax Department that each affiliate and subcontractor exceeding such sales threshold during a specified period is registered to collect New York State and local sales and compensating use taxes. Contractors must also file Form ST-220-CA, Contractor Certification to Covered Agency, certifying to the procuring state entity that they filed Form ST-220-TD with the Tax Department and that the information contained on Form ST-220-TD is correct and complete as of the date they file Form ST-220-CA. (checked November 2, 2026)
A filled-in Form ST-220-TD example: a contractor fills in the top of the form

How to fill out Form ST-220-TD, box by box
Contractor name, principal place of business and mailing address
Federal employer identification number, sales tax ID, covered agency and contract number

Enter the Contractor's federal employer identification number (EIN), the Contractor's sales tax ID number (if different from contractor's EIN), the Contractor's telephone number, the Covered agency or state agency, the Contract number or description, the Covered agency telephone number, and the Covered agency address with City, State and ZIP code.
Estimated contract value
Mark Yes, No or Unknown at this time for: Is the estimated contract value over the full term of the contract (but not including renewals) more than $100,000? (checked November 2, 2026)
Your name and title
After I, enter your (name); you hereby affirm, under penalty of perjury, that you are (title) of the named contractor, and that you are authorized to make this certification on behalf of such contractor.
Complete Sections 1, 2, and 3 on page 2. Make only one entry in each section.
Section 1 - Contractor registration status
Section 1 - Contractor registration status: mark this box if the contractor has made sales delivered by any means to locations within New York State of tangible personal property or taxable services having a cumulative value in excess of $300,000 during the four sales tax quarters which immediately precede the sales tax quarter in which this certification is made. The contractor is registered to collect New York State and local sales and compensating use taxes with the Commissioner of Taxation and Finance pursuant to Tax Law sections 1134 and 1253, and is listed on Schedule A of this certification. (checked November 2, 2026)
Mark this box if the contractor has not made sales delivered by any means to locations within New York State of tangible personal property or taxable services having a cumulative value in excess of $300,000 during the four sales tax quarters which immediately precede the sales tax quarter in which this certification is made. (checked November 2, 2026)
Section 2 - Affiliate registration status
Section 2 - Affiliate registration status: mark this box if the contractor does not have any affiliates.
Mark this box if, to the best of the contractor's knowledge, the contractor has one or more affiliates having made sales delivered by any means to locations within New York State of tangible personal property or taxable services having a cumulative value in excess of $300,000 during the four sales tax quarters which immediately precede the sales tax quarter in which this certification is made, and each affiliate exceeding the $300,000 cumulative sales threshold during such quarters is registered to collect New York State and local sales and compensating use taxes with the Commissioner of Taxation and Finance pursuant to Tax Law sections 1134 and 1253. The contractor has listed each affiliate exceeding the $300,000 cumulative sales threshold during such quarters on Schedule A of this certification. (checked November 2, 2026)
Mark this box if, to the best of the contractor's knowledge, the contractor has one or more affiliates, and each affiliate has not made sales delivered by any means to locations within New York State of tangible personal property or taxable services having a cumulative value in excess of $300,000 during the four sales tax quarters which immediately precede the sales tax quarter in which this certification is made. (checked November 2, 2026)
Section 3 - Subcontractor registration status
Section 3 - Subcontractor registration status: mark this box if the contractor does not have any subcontractors.
Mark this box if, to the best of the contractor's knowledge, the contractor has one or more subcontractors having made sales delivered by any means to locations within New York State of tangible personal property or taxable services having a cumulative value in excess of $300,000 during the four sales tax quarters which immediately precede the sales tax quarter in which this certification is made, and each subcontractor exceeding the $300,000 cumulative sales threshold during such quarters is registered to collect New York State and local sales and compensating use taxes with the Commissioner of Taxation and Finance pursuant to Tax Law sections 1134 and 1253. The contractor has listed each subcontractor exceeding the $300,000 cumulative sales threshold during such quarters on Schedule A of this certification. (checked November 2, 2026)
Mark this box if, to the best of the contractor's knowledge, the contractor has one or more subcontractors, and each subcontractor has not made sales delivered by any means to locations within New York State of tangible personal property or taxable services having a cumulative value in excess of $300,000 during the four sales tax quarters which immediately precede the sales tax quarter in which this certification is made. (checked November 2, 2026)
Sworn to and signed before a notary public
Sworn to: sign before a notary public.
Schedule A - Listing of each entity exceeding the cumulative sales threshold
Schedule A: List the contractor, or affiliate, or subcontractor in Schedule A only if such entity exceeded the $300,000 cumulative sales threshold during the specified sales tax quarters. (checked November 2, 2026)
Column A - Enter C in column A if the contractor; A if an affiliate of the contractor; or S if a subcontractor.
Column B - Name - If the entity is a corporation or limited liability company, enter the exact legal name as registered with the NY Department of State, if applicable. If the entity is a partnership or sole proprietor, enter the name of the partnership and each partner's given name, or the given name(s) of the owner(s), as applicable. If the entity has a different DBA (doing business as) name, enter that name as well.
Column C - Address - Enter the street address of the entity's principal place of business. Do not enter a PO box.
Column D - ID number - Enter the federal employer identification number (EIN) assigned to the entity. If the entity is an individual, enter the social security number of that person.
Column E - Sales tax ID number - Enter only if different from federal EIN in column D.
Column F - If applicable, enter an X if the entity has submitted Form DTF-17 to the Tax Department but has not received its certificate of authority as of the date of this certification.
Individual, Corporation, Partnership, or LLC Acknowledgment
Mark an X in the appropriate box and complete the accompanying statement.
If a corporation, he or she is the ____ of ____, the corporation described in said instrument; that, by authority of the Board of Directors of said corporation, he or she is authorized to execute the instrument on behalf of the corporation for purposes set forth therein.
Notary Public, Registration No.
More rules for Form ST-220-TD
All sections must be completed including all fields on the top of this page, all sections on page 2, Schedule A on page 3, if applicable, and Individual, Corporation, Partnership, or LLC Acknowledgement on page 4. If you do not complete these areas, the form will be returned to you for completion.
Common questions about Form ST-220-TD
Where do I file it?
Mail completed form to: NYS Tax Department, Data Entry Section, WA Harriman Campus, Albany NY 12227-0826.
Sources
[1] Form ST-220-TD (4/15), Contractor Certification, New York State Department of Taxation and Finance (the Official source link on this page).

