When is my LLC Tax Return Due? ShareWhen is my LLC Tax Return Due? The due date of an LLC tax return depends on how the owner elected to be taxed. An LLC can be taxed as a Sole Proprietorship, S-Corporation, C-Corporation or Partnership. Frequently Asked Questions - Business Taxes5 Steps To Take Before You Prepare Your TaxesAre Employers Required To Report The Information That Employees Claim On Their Form W-4 To The Irs?Can I Deduct My Home Office On My Business Tax Return?How Do I Choose The Right Accounting Software For My Business?Do I Have to File Taxes If My Business Made No Money?Do I Need To Make Quarterly Estimated Tax Payments?Need An Employer Identification Number (EIN)?