Form IT-640: START-UP NY Telecommunication Services Excise Tax Credit (Tax Year 2025)

Form IT-640 is a New York State tax credit form for businesses participating in the START-UP NY program that incur excise tax on telecommunication services. If your business operates out of a tax-free NY area under this economic development initiative and pays the state’s excise tax on telecommunication services, this form lets you claim a credit to offset that cost against your personal income tax or corporation franchise tax liability.

The New York State Department of Taxation and Finance issues this form as part of a broader package of START-UP NY incentives designed to attract and retain businesses in designated tax-free zones, usually tied to college and university campuses across the state. The telecommunication excise tax credit is one of several benefits available to approved businesses, alongside others like the START-UP NY Tax Elimination Credit (Form IT-638), which addresses income tax elimination more broadly for qualified employees and businesses in the program.

Who Needs Form IT-640

This form applies specifically to businesses approved under the START-UP NY program that have been billed for New York’s excise tax on telecommunication services during the 2025 tax year. If your company operates telecommunications infrastructure or purchases telecommunication services as part of its operations within a designated tax-free NY area, you likely qualify to claim this credit.

Not every business in START-UP NY needs this particular form. It’s narrowly targeted at the telecommunication excise tax specifically, so companies that don’t have this tax liability won’t have a reason to file it. Check your approval letter and business certification from Empire State Development to confirm your eligibility for this credit before attempting to claim it.

When to Use This Form

You’ll file Form IT-640 alongside your annual New York State tax return for tax year 2025. Because the credit offsets either personal income tax or corporation franchise tax, the timing follows your regular filing deadline, whether you’re an individual, partnership, or corporation. If your business also claims other START-UP NY benefits or credits like the Manufacturer’s Real Property Tax Credit (Form IT-641), you’ll want to coordinate all these forms together since they’re often filed as part of the same overall tax package for START-UP NY participants.

Keep in mind that credits under this program are generally nonrefundable but can often be carried forward if they exceed your tax liability for the year. Review the specific carryforward rules noted in the form instructions, since they can affect how you plan your filings in subsequent years.

How to Get and Fill Out Form IT-640

The New York State Department of Taxation and Finance provides Form IT-640 as a fillable PDF, meaning you can complete it directly on your computer before printing or submitting it electronically with your return. This AcroForm functionality saves time compared to filling out a paper form by hand, and it reduces errors since you can review entries before finalizing them.

To complete the form accurately, you’ll need your START-UP NY certification details, documentation of the telecommunication excise tax you’ve paid, and your business’s tax identification information. The form will walk you through calculating your credit amount based on the excise tax paid during the tax year, and you’ll transfer that final figure to the appropriate line on your main tax return.

Businesses claiming multiple START-UP NY incentives, such as those also eligible for the Empire State Musical and Theatrical Production Credit or other related credits, should keep organized records of each program’s requirements since documentation standards can vary slightly between forms even within the same broader initiative.

Double-check that you’re using the correct tax year version of the form, since New York updates these documents annually and details like line numbers or specific instructions can shift from one year to the next. The version issued for 2025 reflects current program rules and should be used specifically for that tax year’s filing rather than any prior year’s edition.