Filed an Extension (7004) in March? TaxZerone Urges S Corps and Partnerships to File Their 2025 Returns by September 15

TaxZerone helps S corporations, partnerships, and tax professionals e-file their 2025 returns with automatic Schedule K-1 generation and secure distribution.

SAN JOSE, CA, UNITED STATES, September 8, 2026 /EINPresswire.com/ -- U.S. businesses that requested a 6-month extension in March now have just days left to file their actual federal business tax returns. TaxZerone, a leading IRS-authorized e-file provider, is urging S corporations, partnerships and tax professionals to complete and transmit their returns before the deadline expires on Tuesday, September 15, 2026.

For eligible calendar-year businesses, this is the extended deadline to file the underlying 2025 federal business tax return. The extension provides additional time to prepare and submit the return, but it does not extend the deadline for paying any taxes owed.

Filed Form 7004 in March? September 15 Is the Deadline
Businesses that filed Form 7004 in March 2026 should now be preparing to meet the extended filing deadline. For many calendar-year S corporations and partnerships, September 15, 2026, is the deadline to file their 2025 federal business tax returns.

The additional time provided by Form 7004 can be used to:
✔️ Finalize financial statements and reconcile accounting records
✔️ Complete required tax schedules and supporting forms
✔️ Review shareholder or partner information
✔️ Verify income, deductions, credits, and other tax details
✔️ Review the completed return before electronic submission

Businesses and tax professionals should avoid waiting until the final day. Starting early provides additional time to review the return, resolve potential issues, and complete the electronic submission before the deadline.

Filing Requirements
☑️ S corporations: File Form 1120-S and furnish applicable Schedule K-1s to shareholders.
☑️ Partnerships: File Form 1065 and furnish applicable Schedule K-1s to partners.
☑️ Tax professionals: Review all client returns extended through Form 7004 and prioritize those that still require preparation, review, or approval.

TaxZerone Supports S-Corp and Partnership E-Filing
TaxZerone simplifies the federal business tax filing process for Form 1120-S and Form 1065, helping businesses complete and submit their returns electronically without relying on paper filing.

With TaxZerone, businesses can:
✔️ E-file Form 1120-S for S corporations
✔️ E-file Form 1065 for partnerships
✔️ Automatic Schedule K-1 generation
✔️ Securely share Schedule K-1s with applicable shareholders or partners

All Essential Forms & Schedules Included with Each Filing
When you file your S Corporation (Form 1120-S) or Partnership (Form 1065) return with TaxZerone, you gain access to a wide range of supporting forms and schedules required for accurate IRS filing — all included at no extra cost. This helps businesses and tax professionals prepare complete returns and submit them electronically.

Commonly Used Supporting Forms
✔️ Form 4797 – Report sales of business property
✔️ Form 4562 – Claim depreciation and amortization
✔️ Form 8825 – Report rental real estate income and expenses
✔️ Form 1125-A – Report cost of goods sold
✔️ Form 1125-E – Report compensation of officers
✔️ Form 7205 – Claim energy-efficient building deductions
✔️ Form 8949 – Report sales of capital assets

Additional Schedules — Form 1120-S Filers: TaxZerone also supports Schedule D (Form 1120-S), Schedule M-3 (Form 1120-S), Schedule B, Schedule K, Schedule L, Schedule M-1, Schedule M-2

Additional Schedules — Form 1065 Filers: TaxZerone also supports Schedule D (Form 1065), Schedule M-3 (Form 1065), Schedule C (Form 1065), Schedule F (Form 1040), Form 8697, Form 8866, Schedule B-1 (Form 1065), Schedule B-2 (Form 1065), Form 8825

By integrating these forms directly into the filing process, TaxZerone helps businesses avoid switching between multiple systems or software tools.

Prepare and Furnish Schedule K-1 on Time
Schedule K-1 is an important part of the federal tax reporting process for applicable businesses with shareholders or partners.
✔️ For an S corporation, Schedule K-1 reports each shareholder’s share of the corporation’s income, deductions, credits, and other applicable tax items.
✔️ For a partnership, Schedule K-1 reports each partner’s distributive share of the partnership’s income, deductions, credits, and other applicable tax items.

After completing the applicable business tax return, businesses generally must prepare and furnish Schedule K-1 to their applicable shareholders or partners. TaxZerone makes this process easier by allowing businesses to securely share Schedule K-1 through the secure portal (ZeroneVault) or by email.

A Modern Way to File Business Tax Returns
TaxZerone helps businesses and tax professionals streamline e-filing with automatic Schedule K-1 generation, built-in validations, and transparent pricing.
☑️ Automatic Schedule K-1 Generation: Generates Schedule K-1 for every shareholder or partner at no extra cost.
☑️ All Supporting Forms Included: All required IRS schedules and supporting forms are included.
☑️ Advanced Error Checks: Built-in validations catch errors before submission, helping reduce IRS rejections and follow-up notices.
☑️ Transparent Pricing: Flat-fee pricing with no hidden charges—what you see at checkout is exactly what you pay.
☑️ Real-Time IRS Acknowledgment: Receive confirmation as soon as the IRS accepts the return after successful e-filing.
☑️ Secure Filing: Industry-standard encryption protects your sensitive financial data throughout the entire filing process.
☑️ Flexible K-1 Delivery: Send Schedule K-1 securely to partners or shareholders via ZeroneVault or by postal mail.

Affordable Pricing for Business Tax Filing
Businesses can file Forms 1120-S and 1065 through TaxZerone for $179.99 per return, with secure, fast, and convenient e-filing.
✅ No recurring subscriptions
✅ No additional module fees
✅ No hidden costs

This straightforward pricing model allows businesses and tax professionals to complete their filings confidently without worrying about unexpected charges or complicated pricing structures.

Dedicated Support for Businesses and Tax Professionals
TaxZerone offers reliable support to ensure a smooth and hassle-free filing experience. Our team is available to assist businesses and tax professionals at every step of the e-filing process.
⭐ Live Chat Assistance
⭐ Email Support
⭐ Phone Support

“At TaxZerone, our mission is to make business tax filing simple, secure, and accurate. Whether you’re filing your own business or managing returns for multiple clients, our platform and support team are here to help you stay compliant with confidence.

Your All-in-One Solution for Year-Round Tax Filing
Beyond business income tax returns, TaxZerone supports a wide range of federal tax filings used by businesses, nonprofits, and payroll providers throughout the year. These include:
✔️ Employment tax forms, including Forms 941, 940, 943, 944, and 945
✔️ Information returns such as W-2, 1099, 1098, and 5498 series, as well as ACA forms
✔️ Business Tax Forms: Form 1120-S, California Form 100S, Form 1065, California Form 565, California Form 568
✔️ Extension requests such as Forms 7004, 4868, 8868, 8809, and 15397
✔️ Nonprofit filings within the Form 990 series, Form 5227, Form 1120 POL, California Form 199, and Form 109
✔️ Excise tax filings such as Form 2290 and Form 8849
✔️ Essential forms including W-9, W-8BEN, 8655, and BOI Reports

About TaxZerone
TaxZerone is an online tax e-filing platform that provides electronic filing solutions for individuals, businesses, tax professionals, nonprofits, and other organizations. The platform supports a broad range of federal tax and information returns and is designed to simplify the tax filing process through convenient online filing tools.

To file Business tax forms, visit TaxZerone or call (408) 444-7120 for assistance.

Alexia Zepeda
TaxZerone LLC
+1 408-444-7120
email us here
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