LLC Tax Return: Forms 1065, 1120-S & 1120
Forms 1065, 1120-S and 1120 with all required schedules.

What's included
- Federal and state returns
- Partnership and LLC filings
- All required schedules
Delivered electronically by email. Government and state fees are separate unless stated.
On this page
Accurate and Reliable Tax Preparation for US Businesses
Every US business has tax responsibilities, regardless of its size or industry. Whether you operate an LLC, Partnership, S Corporation, or C Corporation, filing your business taxes correctly is essential to maintaining compliance and avoiding costly penalties. Missing deadlines, filing incorrect information, or misunderstanding your tax obligations can create unnecessary complications that impact your business operations.
At USBase, we help business owners prepare and file their US company tax returns accurately and efficiently, ensuring compliance with IRS requirements while providing peace of mind throughout the filing process.
Who Needs Business Tax Preparation Services?
US business entities are generally required to meet federal and, in some cases, state tax filing obligations each year.
Single-Member LLCs
Single-member LLCs may have specific reporting requirements depending on ownership structure and business activities.
Multi-Member LLCs
Partnership tax filings often involve additional reporting obligations and information returns.
S Corporations
S Corporations must file annual tax returns and report income, deductions, and shareholder information.
C Corporations
C Corporations are subject to separate tax filing requirements and corporate tax obligations.
Foreign-Owned US Companies
Many foreign-owned US entities have unique reporting requirements and compliance obligations that should be handled carefully.
Why Business Tax Filing Is Important
Proper tax preparation helps protect your company from compliance issues while ensuring required filings are submitted accurately and on time.
Maintain IRS Compliance
Timely and accurate tax filings help your company remain compliant with federal tax regulations.
Avoid Penalties and Late Fees
Missing filing deadlines or submitting incorrect returns can result in penalties, interest charges, and IRS notices.
Reduce Filing Errors
Professional preparation helps minimize common mistakes that can delay processing or trigger additional reviews.
Support Long-Term Business Growth
Maintaining proper tax records and compliance can make future business operations, financing, and expansion opportunities much easier.
Our Tax Preparation Process
At USBase, we simplify the tax filing process for business owners.
Business Review
We review your company structure, tax obligations, and filing requirements.
Financial Information Collection
Our team gathers and organizes the necessary financial documents and supporting information.
Tax Return Preparation
We prepare the required federal tax forms based on your entity type and business activities.
Compliance Review
Before filing, we carefully review the return to help ensure accuracy and compliance.
Why Choose USBase?
Business tax regulations can be complex, especially for companies with multiple owners, foreign ownership, or unique reporting requirements. Our experienced team understands the challenges business owners face and works to ensure every return is prepared accurately and professionally.
Whether your company is newly formed or well-established, USBase provides dependable tax preparation services designed to keep your business compliant and focused on growth.
How ordering works
- Tell us the details. Choose the service and send us the information and documents we ask for.
- We prepare and submit. Our team prepares your filing, checks it and submits it to the IRS or the relevant state agency.
- You get the result by email. We send your documents electronically. Agency processing times vary and are not controlled by us.
Frequently Asked Questions
In many cases, yes. Certain business entities are still required to file tax returns even if no revenue was generated during the year.
Most LLCs, Partnerships, S Corporations, and C Corporations have annual tax filing obligations.
Requirements vary depending on the entity type but may include financial statements, income records, expense reports, bank statements, and prior tax filings.
Late filings may result in IRS penalties, interest charges, and additional compliance issues.
Yes. Foreign-owned US entities often have specific reporting obligations even if little or no business activity occurred.
Yes. We assist with tax preparation for various entity types, including LLCs, Partnerships, S Corporations, and C Corporations.
The timeline depends on the complexity of the business and the availability of financial information.
Yes. In addition to tax preparation, we assist businesses with various compliance and reporting requirements throughout the year.
USBase is a private company and is not affiliated with the IRS or any government agency. Content is general information, not legal or tax advice. See our Terms of Service.
Questions before ordering?
Talk to a real person. We reply by email and WhatsApp, usually within one business day.
Chat on WhatsApp+1 949 527 8252Email us[email protected]Ready to Prepare Your Business Taxes?
Stay compliant, avoid costly filing mistakes, and ensure your company meets its tax obligations with confidence. Contact USBase today for professional US Company Tax Preparation services and let our team simplify your business tax filing process.