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

What the New York Form ST-810 (March-May 2020) Is For

New York Form ST-810 (March-May 2020) is a Local Quarterly Sales and Use Tax Return used by monthly filers to reconcile their sales activity from March 1 through May 31, 2020. It applies to businesses with a Certificate of Authority that met the $300,000 threshold in a previous quarter and are required to report every month. The form consolidates taxable sales, use tax, purchases, and applicable credits for both New York State and local jurisdictions.

When You’d Use New York Form ST-810 (March-May 2020)

This form applies to specific business scenarios that require late, amended, or final filings for the March–May 2020 sales tax quarter:

  • Late Filing: This form is used if the June 20, 2020, deadline was missed due to oversight, classification issues, or operational disruptions during the quarter.

  • Amended Returns: You should file an amendment if there were errors in jurisdiction allocations, calculation errors, or unclaimed sales tax credits during the original submission.

  • Final Returns: Businesses that closed, sold, or reorganized during the covered period must use this form to mark the final return and include sales tax due on any taxable asset sales.

  • Threshold Reclassification: If your taxable receipts previously exceeded $300,000, you were required to begin monthly filings, and this quarterly return summarizes those filings.

Key Rules or Details for March–May 2020

Businesses must follow several key tax regulations and reporting rules when completing the New York Form ST-810 (March-May 2020):

  • $300,000 Threshold Rule: Once a business exceeds $300,000 in combined receipts, rents, or taxable purchases during any quarter, monthly filing becomes mandatory for at least four consecutive quarters below that threshold.

  • Jurisdiction Reporting: All taxable sales and use tax must be reported based on the exact jurisdiction where delivery occurred or where the item was used.

  • Vendor Collection Credit: This administrative credit is available only if the return is filed and paid in full by June 20, 2020; any late submission forfeits eligibility.

  • E-File Mandate: Businesses that self-prepare returns using a computer with internet access must file electronically using the NY DTF ST-810 system.

  • Recordkeeping Requirements: All sales records, tax-exempt purchase documentation, and invoices must be retained for at least six years, through June 2029, in case of audit or review by the Department of Taxation and Finance.

Step-by-Step (High Level)

Filing the New York Form ST-810 (March-May 2020) involves several clearly defined steps to ensure full compliance with state and local sales tax regulations:

  1. Enter Business Information: Begin by providing your business identification details, including your tax identification number, quarterly gross sales, and whether the return is final or includes credits.

  2. Mark Final Return if Closed: If your business was closed, sold, or restructured during the quarter, mark the return as final and explain the reason in the designated section.

  3. Report Tax by Jurisdiction: For each applicable jurisdiction, report taxable sales and purchases subject to tax; calculate the sales tax using the correct NY sales tax rates and jurisdiction codes.

  4. Report Special Taxes: Enter special taxes that apply to passenger car rentals and telephony or telegraphy entertainment services as outlined in the form instructions.

  5. Apply Tax Credits and Payments: List any prior overpayments, prepaid cigarette tax credits, and advance payments made through monthly or PrompTax filings.

  6. Calculate Tax Due: Add the total sales and use tax with special taxes, then subtract any payments or credits to determine net taxes owed.

  7. Add Penalties and Interest if Late: If filing after the deadline, calculate penalties and interest charges based on the date the filing is received and the outstanding balance.

  8. Sign and Submit: Submit the return electronically through the NY Department of Taxation and Finance portal or by mail, ensuring the appropriate signatures accompany it.

Common Mistakes and How to Avoid Them

These are frequent errors that businesses make when filing Form ST-810 and how to avoid them:

  • Wrong Jurisdiction: Reporting sales based on the business address rather than the delivery location can result in misallocated tax. Always verify jurisdiction codes using official NY tax resources.

  • Improper Credits: Claiming credits without documentation or placing them under the incorrect jurisdiction line can result in penalties. Use ST-810-ATT and file AU-11 with complete supporting documentation.

  • Missed Threshold Rule: Businesses sometimes fail to recognize when they've crossed the $300,000 threshold for mandatory monthly filing; monitor your taxable sales closely each quarter.

  • Including Sales Tax in Gross Sales: Reporting figures that include sales tax inflates revenue; configure accounting systems to separate taxable sales from collected tax.

  • Omitting Required Schedules: Failing to include relevant schedules (such as those for utilities, lodging, or motor fuel) can delay processing. Carefully review the instructions to confirm that all necessary attachments are included.

  • Late Filing Causes Credit Loss: Submitting even one day late disqualifies you from the vendor collection credit; calendar the due date and submit early if possible.

What Happens After You File

Once your New York Form ST-810 (March-May 2020) is filed, the New York State Department of Taxation and Finance will review your submission for accuracy and completeness. Electronic submissions receive immediate confirmation, while paper filings may require certified mail for proof. Approved credits or overpayments are either refunded or applied to your account. Any discrepancies may result in notices, assessments, or audit requests. 

Keep all related documents, including digital versions, stored securely in cloud storage systems for at least three years, in compliance with New York State record-keeping requirements.

FAQs

Do I need to file if my business closed during the sales tax quarter?

Yes, if your business closed between March 1 and May 31, 2020, you must file a final return and report all applicable sales, including any sales of covered items or business assets.

Can I claim a refund if I accidentally reported tax-exempt products as taxable?

Yes, you may file an amended Use Tax Return, along with Form AU-11 and supporting documentation, such as tax-exempt purchase documentation, to request a refund.

Are third-party marketplace sales included in the gross sales total?

Yes, marketplace facilitator laws require gross sales to include sales made through third-party platforms when the facilitator collects and remits the tax on your behalf.

Is a digital version of the form accepted if I file from a mobile device?

Yes, you may complete and submit the digital version of the return from a mobile device, as long as you meet the encryption protocols and file through an approved system, such as airSlate SignNow.

Did the Wayfair decision impact how I file this sales tax return?

Yes, following the Supreme Court’s Wayfair decision, remote sellers without a physical presence in New York may still be required to file based on economic nexus thresholds.

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