The IRS deadline for Multi-Member LLCs & Partnerships (Form 1065) and S-Corporations (Form 1120-S) is March 15, 2026 — only days away. Missing this date triggers automatic penalties, daily interest, and potential IRS notices. File on time or secure an extension — act before it's too late.
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The IRS charges $235 per partner/member per month for late LLC & partnership returns — penalties add up fast for multi-member entities.
Interest on unpaid taxes compounds daily from March 15 onward — even if you eventually file. It adds up fast.
Netfintax can file your return or secure a 6-month extension today — stopping penalties before they start.
All multi-member LLCs taxed as partnerships with a calendar tax year must file Form 1065 by March 15 — or file Form 7004 to extend.
S-Corps with a calendar tax year must also file by March 15. Missing this deadline triggers per-shareholder penalties.
All domestic partnerships filing Form 1065 share the same March 15 deadline regardless of size or number of partners.
An extension gives you until September 15 to file — but estimated taxes owed must still be paid by March 15 to avoid interest.
Since 2013, Netfintax has helped small business owners across all 50 states with tax filing, accounting, and small business consulting — done right, on time, every time.
Whether you're an LLC, S-Corp, or partnership needing a quick extension, our experienced team handles your filing from start to finish.
Available Mon–Fri, 8am–5pm EST.