TaxZerone urges S corps and partnerships to file extended 2025 returns by Sept. 15

TaxZerone is warning calendar-year S corporations and partnerships that filed Form 7004 in March that their extended deadline to submit 2025 federal returns is Tuesday, Sept. 15, 2026. The company is highlighting e-filing tools for Forms 1120-S and 1065, including automatic Schedule K-1 generation and secure delivery.

Why it matters: - Calendar-year S corporations and partnerships that took a 6-month extension in March have only days left to file their 2025 federal business tax returns. - The filing deadline is Tuesday, Sept. 15, 2026. - The extension gives extra time to file, but it does not extend the deadline to pay taxes owed.

What happened: - TaxZerone is urging S corporations, partnerships and tax professionals to complete and transmit extended returns before the deadline. - The reminder is aimed at businesses that filed Form 7004 in March 2026. - For those calendar-year businesses, Sept. 15 is the extended due date for the underlying 2025 return.

The details: - S corporations must file Form 1120-S and furnish applicable Schedule K-1s to shareholders. - Partnerships must file Form 1065 and furnish applicable Schedule K-1s to partners. - Tax professionals are being told to review all client returns extended through Form 7004 and prioritize any that still need preparation, review or approval. - TaxZerone supports electronic filing for Form 1120-S and Form 1065. - The platform includes automatic Schedule K-1 generation and secure sharing of K-1s with shareholders or partners. - TaxZerone says its filing package includes supporting forms and schedules at no extra cost. - Commonly used forms listed include Form 4797, Form 4562, Form 8825, Form 1125-A, Form 1125-E, Form 7205 and Form 8949. - For Form 1120-S filers, supported schedules include Schedule D, Schedule M-3, Schedule B, Schedule K, Schedule L, Schedule M-1 and Schedule M-2. - For Form 1065 filers, supported schedules include Schedule D, Schedule M-3, Schedule C, Schedule F, Form 8697, Form 8866, Schedule B-1, Schedule B-2 and Form 8825. - TaxZerone also says its system includes built-in validations, real-time IRS acknowledgment, industry-standard encryption and flexible K-1 delivery through ZeroneVault, email or postal mail. - The price for filing Forms 1120-S and 1065 is $179.99 per return. - The company says there are no recurring subscriptions, no additional module fees and no hidden costs. - Customer support is available through live chat, email and phone. - TaxZerone also supports other federal filings, including employment tax forms, information returns, business tax forms, extension requests, nonprofit filings, excise tax filings and essential forms such as W-9 and W-8BEN. - The company provides an online tax e-filing platform for individuals, businesses, tax professionals, nonprofits and other organizations. - To file business tax forms, users can visit TaxZerone or call (408) 444-7120 for assistance. - The company also lists social profiles on LinkedIn, Instagram, Facebook, YouTube, TikTok, X and Pinterest.

Between the lines: - The message is both a deadline reminder and a product pitch. - TaxZerone is positioning automated K-1 handling, integrated schedules and flat pricing as the main reasons to file through its platform instead of using multiple tools or paper filing. - The timing suggests the company is targeting last-minute filers and tax professionals working through extended returns.

What's next: - Businesses that received the extension need to finish returns and transmit them by Sept. 15, 2026. - S corporations and partnerships will also need to furnish Schedule K-1s to owners after the returns are completed. - Tax professionals are likely to focus on remaining extended returns before the deadline closes.

The bottom line: - For extended 2025 S corp and partnership returns, Sept. 15 is the finish line, not the starting point.