Personal and business Tax
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Understanding Your Filing Obligations for 2026 in Virginia

Knowing which taxes to file and when they are due is essential for avoiding penalties and interest. For individuals, businesses, and nonprofit organizations in Ashburn and across Northern Virginia, the 2026 tax filing season includes several important deadlines.

Individual Taxes to File (Form 1040)

For most individual taxpayers, the deadline to file a 2025 federal tax return is April 15, 2026. Virginia’s individual income tax deadline is May 1, 2026—a unique two-week buffer after the federal deadline .

Extension to File – Virginia allows an automatic 6-month extension to file your return (November 1 for most people), with no application required . However, an extension to file is not an extension to pay. Any taxes owed must be paid by May 1, 2026, regardless of whether you take the filing extension.

Estimated Tax Payments – If you are self-employed, receive significant investment income, or have taxes not fully withheld from your paycheck, you likely need to make quarterly estimated tax payments.

Business Taxes to File

Partnerships (Form 1065) – Due by March 15, with extension to September 15.

S-Corporations (Form 1120-S) – Due by March 15, with extension to September 15.

C-Corporations (Form 1120) – Due by April 15, with extension to October 15.

Payroll Taxes (Form 941) – Quarterly filings are due April 30, July 31, October 31, and January 31.

Sales Tax – Virginia has implemented changes to sales tax filing. Starting with April 2025 returns, the ST-1 consolidated form replaced the ST-8 and ST-9 file layouts . Businesses can use Web Upload for multiple sales tax types, including ST-6 and ST-7 . Virginia encourages businesses to download and use the new ST-1 file layout to avoid problems when the old layout is no longer available .

Nonprofit Taxes to File (Form 990)

Tax-exempt organizations must file Form 990 annually. For calendar-year organizations, the deadline is May 15, with a six-month extension to November 15.

The IRS Stay Exempt program provides resources for exempt organizations . The IRS notes that the terms “nonprofit,” “not-for-profit,” and “nonstock” describe how an organization incorporates under state law, while “tax exempt” refers to the status granted by the IRS to qualifying organizations .

Which Form Does Your Organization File?

  • Form 990-N (e-Postcard) – Gross receipts under $50,000

  • Form 990-EZ – Gross receipts under $200,000 AND total assets under $500,000

  • Form 990 (long form) – Gross receipts over $200,000 OR total assets over $500,000

  • Form 990-PF – Private foundations (any revenue level)

Maintaining Tax-Exempt Status

Organizations must comply with normal annual return filing requirements, including Form 990-N, unless they are otherwise not required to file a return . Failure to file for three consecutive years results in automatic revocation of tax-exempt status.

Four main activities can jeopardize a 501(c)(3)’s tax-exempt status: activity that results in private benefit or inurement; lobbying activity that constitutes a substantial part of overall activities; political campaign activity; and unrelated business activity that is substantial when compared with exempt-function activities .

Virginia Tax Filing Addresses

For paper filings, the Virginia Department of Taxation provides specific mailing addresses:

  • Tax Payments: P.O. Box 760, Richmond, VA 23218-0760

  • Tax Refunds: P.O. Box 1498, Richmond, VA 23218-1498

  • Estimated Payments: P.O. Box 1478, Richmond, VA 23218-1478 

At Nova Tax & Accounting Services , our expert tax solutions team helps clients file all required returns accurately and on time. Schedule your free consultation to ensure you meet every deadline.