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Reviewed by: William McLee
Reviewed date:
January 16, 2026

What the New York Form ST-809 (2015) Is For

New York Form ST-809 (2015) is the monthly sales and use tax return required for certain businesses registered to collect sales tax in New York State. It is used to report total sales, taxable sales, purchases subject to use tax, and the sales tax collected during a single month. This NY sales tax return also serves as a payment voucher, enabling businesses to submit the tax owed directly to the New York State Department of Taxation and Finance as part of a quarterly tax filing.

When You’d Use New York Form ST-809 (2015)

This return is required in specific situations based on sales volume and filing status:

  • Monthly filing requirement based on sales volume: Businesses must file this form when their combined taxable sales and purchases subject to use tax meet or exceed the quarterly threshold established by New York State.

  • Part-quarterly tax filing schedule: The form is used for the first two months of each sales tax quarter, followed by a separate quarterly return that reconciles all three months.

  • Zero-tax activity months: Businesses are still required to file the return even when no taxable sales occurred during the month.

  • Late filing situations: The form must be filed as soon as possible after the due date if the original deadline is missed, even when penalties and interest apply.

Key Rules or Details for 2015

Several filing rules applied specifically to this return during the 2015 tax year:

  • Electronic filing requirement: Most monthly filers were required to submit their returns using the Sales Tax Web File system, unless they qualified for a specific exception.

  • Strict filing deadline: The return and any payment were due within twenty days after the end of the month being reported.

  • Calculation method selection: Filers could choose between the long method and the short method, but eligibility requirements had to be met before using the simplified option.

  • Credit substantiation rules: Any credits claimed had to be supported with written explanations and appropriate documentation.

  • Limited reporting scope: The form applied only to New York State and local sales and use taxes for the applicable filing period.

Step-by-Step (High Level)

Filing this return follows a consistent process regardless of the calculation method used:

  • Gather monthly records: Businesses must compile complete records of gross sales, taxable sales, exempt transactions, and purchases subject to use tax for accurate sales tax reporting.

  • Choose a calculation method: Filers must select either the long method or the short method based on eligibility and recent filing history.

  • Complete the applicable section: Only the calculation section for the chosen method should be completed on the return.

  • Apply credits and advance payments: Any prepaid sales tax, allowable credits, or advance payments must be deducted before determining the final tax due.

  • Sign and submit the return: An authorized individual must sign the return and submit it by the required deadline using the approved filing method.

Common Mistakes and How to Avoid Them

Monthly filers frequently make errors that can lead to penalties or processing issues:

  • Missing the filing deadline: Businesses should carefully track monthly due dates and submit the return within twenty days after the end of each month.

  • Failing to file no-tax-due returns: Filing is required for every period, even when no taxable sales occurred during the month.

  • Misreporting gross sales: Filers should clearly distinguish between total gross sales and taxable sales, and exclude collected sales tax from reported amounts.

  • Using the short method without qualifying: Eligibility requirements should be confirmed before selecting the short method to avoid underpayment issues.

  • Submitting incomplete returns: All required pages and schedules must be included, even if certain sections contain no entries.

What Happens After You File

After submission, the New York State Department of Taxation and Finance processes the return and applies any payment to the business’s sales tax account. Electronically filed returns receive confirmation immediately, while paper filings take longer to process. The reported information becomes part of the account’s compliance history and is later reconciled with the quarterly return. Discrepancies, missing documentation, or calculation errors may result in notices requesting clarification or additional information.

FAQs

Do I need to file if my business had no sales during the month?

Yes, a return must still be filed even when there are no taxable sales, because New York requires continuous sales tax reporting for every assigned filing period.

Can I change between the long method and the short method each month?

Yes, you may choose either method each month as long as you meet the eligibility requirements for the short method during that filing period.

How is New York Form ST-809 (2015) different from the quarterly return?

This form is used for part-quarterly tax filing during the first two months of a quarter, while the quarterly return reconciles all monthly activity.

What happens if I make a mistake on a filed return?

Errors must be corrected on the corresponding quarterly return rather than by filing an amended monthly NY sales tax return.

Does this form apply to taxes outside New York State?

No, New York Form ST-809 (2015) applies only to New York State and local sales and use taxes for the specified filing period.

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