If you expect to make taxable sales in New York State, you must register with the Tax Department at least 20 days before you begin business. This recorded live webinar event contains helpful information for new sales tax vendors in New York State (recorded 3-5-20).What about sales tax and other taxes? You should withhold enough from the purchase price of the business to cover any of the seller's unpaid tax. Information on the Foreign Investment in Real Property Tax Act of 1980 (FIRPTA) and how it affects a foreign person with real property interest. You need to file a quarterly withholding tax return and make payments. If you are trying to locate, download, or print state of New York state tax forms, you can do so on the New York Department of Taxation website. It helps us determine whether you should report sales tax, use tax, or withholding tax. If you live in the state of New York or earn income within the state, it's likely you will have to pay New York income tax. Tools, such as withholding tax calculators, can help you figure out what to fill in on the various steps of Form W4.