New York ST-119 and Contractor Exempt Purchase Certificates

In New York, a qualifying organization buys goods and taxable services tax-free by handing the vendor a completed Form ST-119.1, the Exempt Purchase Certificate, and a contractor doing work on that organization’s property buys materials tax-free by handing its supplier a completed Form ST-120.1, the Contractor Exempt Purchase Certificate. Both forms sit inside a single system built on Tax Law Sections 1115 and 1116, and both fail the same way: a missing field, the wrong number, or a late delivery pushes the tax, penalties, and interest onto whoever cannot produce clean paperwork.¹

Who Can Use Form ST-119.1

Tax Law Section 1116(a) lists the organizations that qualify. The main categories are New York State and its political subdivisions, the federal government, the United Nations and international organizations the U.S. belongs to, nonprofit organizations organized and operated exclusively for religious, charitable, scientific, literary, educational, or public safety testing purposes (or to prevent cruelty to children or animals), qualifying veterans’ organizations, and specifically named Indian nations and tribes residing in New York.²

Government entities are exempt automatically and do not use ST-119.1. They pay with official purchase orders or vouchers instead.³ Everyone else, including 501(c)(3) nonprofits, has to apply and be approved before a single tax-free purchase is legal.

The nonprofit category comes with real conditions. No part of the organization’s net earnings may benefit any private individual, the organization cannot devote a substantial part of its activities to lobbying or take sides in political campaigns, and on dissolution its assets must go to another exempt purpose or to government for a public use.⁴

Getting Approved: Form ST-119.2

An organization that isn’t automatically exempt applies on Form ST-119.2, the Application for an Exempt Organization Certificate. If you already hold a federal 501(c)(3) determination letter, attach it and you can skip the organizing documents. Without one, you’ll submit articles of incorporation or equivalent organizing documents, a detailed statement of current and planned activities, a statement of receipts and expenditures, and a statement of assets and liabilities. If someone other than an officer or trustee signs, a Form ST-119.4 power of attorney has to come along.⁴

The application goes to the Sales Tax Exempt Organizations Unit at the W.A. Harriman Campus in Albany. There is no filing fee. Once approved, the Department of Taxation and Finance issues Form ST-119, the Exempt Organization Certificate, which carries the organization’s six-digit exemption number, and mails copies of Form ST-119.1 with it.⁵

Using ST-119.1 at the Point of Sale

Form ST-119.1 is not downloadable. It arrives in the mail with your original certificate, and if you need more copies you have to contact the department’s sales tax information center directly.⁵

An authorized officer fills out the form with the organization’s legal name, address, six-digit exemption number, and a description of what is being purchased, then signs certifying that the purchase is for the organization’s exempt purpose. A common mistake is writing in the nine-digit federal employer identification number. Vendors need the six-digit state exemption number, and the two are not interchangeable.

Three limits catch organizations off guard:

The certificate cannot be used for personal purchases, even by an officer or board member.
The certificate cannot be lent to any other organization, no matter how closely related.
If an individual pays with personal funds, the purchase is taxable even if the organization reimburses that person afterward. The organization’s own payment method has to be used, and the certificate has to be presented at the time of purchase.⁵

Form ST-120.1 for Contractors

When a contractor buys materials for a project on behalf of an exempt organization, those materials can be purchased tax-free under Tax Law Section 1115(a)(15) and (16). Section 1115(a)(15) covers materials used to erect a new structure or to add to, alter, or improve real property owned by the exempt organization. Section 1115(a)(16) covers materials used to maintain, service, or repair that same property. In both cases the material has to become a permanent, integral part of the structure or real property. Anything that isn’t physically incorporated into the building doesn’t qualify.⁶

Before a contractor can use ST-120.1, the exempt organization has to hand the contractor a copy of its own ST-119.1, or, for a government project, a governmental purchase order or voucher.⁷ The contractor then fills out ST-120.1 with its own identifying information, the exempt organization’s name and exemption number, the project address, and a description of the materials being purchased. Whether the work is a capital improvement or repair and maintenance affects which box gets checked, so pick the one that matches the tax law section being claimed.

One Certificate Per Project

Each ST-120.1 is project-specific. A contractor running three jobs for three different exempt organizations needs three separate certificates. Every purchase order tied to the certificate has to show the project address and the project owner’s name and address, and the same information has to appear on invoices and delivery slips.⁷ That keeps the exemption tied to the specific qualifying work rather than floating across the contractor’s whole operation.

Passing the Exemption Down the Chain

A prime contractor can hand a completed ST-120.1 to a subcontractor to buy services tax-free on the same project. The retail seller of the services, usually the prime contractor billing the exempt organization, is responsible for collecting tax on the contract price unless the project owner provides a properly completed exemption certificate.⁷ If any link in the paperwork fails, the party that couldn’t produce a valid certificate is the one on the hook.

The 90-Day Rule

If a properly completed exemption certificate reaches the vendor within 90 days of the sale, the vendor is relieved of liability for uncollected sales tax on that transaction.¹ Best practice is still to present it at the time of the sale, but the 90-day window is the legal safe harbor.

Miss it and the ground shifts. After 90 days the vendor and the purchaser share the burden of proving the sale was legitimately exempt. If neither can, the vendor is personally liable for the tax plus penalties and interest.⁷ The regulations confirm the loss of safe harbor isn’t an automatic assessment, but the vendor no longer has an easy defense.⁸

Vendors that receive the certificate on time are expected to accept it in good faith, which means exercising reasonable due care. You don’t have to verify exempt status with the state, but you can’t accept a certificate you know or have reason to know is fraudulent or plainly wrong. A blank field in a critical spot, a mismatched organization name, or an exemption claim that doesn’t fit what is being sold is a red flag.⁹

Records Both Sides Have to Keep

The purchaser and the vendor each retain copies of every exemption certificate. Minimum retention is three years from the due date of the sales tax return the certificate relates to, or three years from the date the return was actually filed, whichever is later. A late-filed return pushes the retention clock out.¹⁰

For contractors, the same three-year rule applies, and the file also has to include purchase orders, invoices, and delivery slips that tie each purchase to the specific exempt project.⁷ Auditors expect to follow an unbroken line from the certificate to the project. Any gap can support an assessment on the full tax for every purchase in that gap.

What Noncompliance Costs

Tax Law Section 1145 sets a late-payment penalty of 10% of the tax due for the first month plus 1% for each additional month, capped at 30%. If a return is more than 60 days late, the minimum penalty is $100 or 100% of the tax due, whichever is less. Interest compounds daily at 14.5% per year or the underpayment rate set by the commissioner, whichever is greater.¹¹

Fraud is a different animal. If the failure to pay was due to fraud, the penalty is two times the tax due, and daily interest still runs on top of that. The fraud penalty replaces the graduated penalty rather than stacking with it.¹¹ An organization that knowingly uses its certificate for non-exempt buys, or a contractor who fabricates an ST-120.1 for a project that has no exempt owner, is exposed at that level and can also lose exempt status.

1
New York State Department of Taxation and Finance. Exemption Certificates for Sales Tax
2
New York State Senate. New York Tax Law 1116 – Exempt Organizations
3
New York State Department of Taxation and Finance. A Guide to Sales Tax in New York State for Exempt Organizations
4
New York State Department of Taxation and Finance. Instructions for Form ST-119.2 – Application for Exempt Organization Certificate
5
New York State Department of Taxation and Finance. Sales Tax Exempt Organizations
6
New York State Senate. New York Tax Law 1115 – Exemptions From Sales and Use Taxes
7
New York State Department of Taxation and Finance. Contractor Exempt Purchase Certificate ST-120.1
8
New York Codes, Rules and Regulations. 20 CRR-NY 532.4 – Presumption of Taxability
9
New York State Department of Taxation and Finance. Advisory Opinion TSB-A-16(28)S
10
New York State Department of Taxation and Finance. Record-Keeping Requirements for Sales Tax Vendors
11
New York State Senate. New York Tax Law 1145 – Penalties and Interest