USA Tax Guide for Indian Entrepreneurs Federal 21%, State Taxes, LLC vs C-Corp, Pass-Through, FIRPTA & DTAA (2026)

Am I actually compliant with the IRS and my state?

Failing to file the right forms  even if your company made zero revenue  can trigger penalties as high as $25,000 per missed form. Missing state annual reports can cause your company to lose good standing, making it impossible to open accounts, sign contracts, or pass a due diligence check.

This 2026 USA Company Compliance Checklist covers every federal and state filing obligation you need to know: IRS tax returns, Form 5472, state annual reports, Delaware franchise tax, Wyoming annual reports, payroll taxes, sales tax nexus rules, and the Corporate Transparency Act BOI reporting requirements.

Whether you run a single-member foreign-owned LLC or a C-Corporation with investors, this guide will help you stay compliant, avoid penalties, and keep your US company in good standing.

Why US Company Compliance Matters in 2026

Registering a US company is the first step. Keeping it compliant is the ongoing job that most founders underestimate. The IRS, individual US states, and FinCEN (Financial Crimes Enforcement Network) all have separate reporting requirements  and they don’t coordinate with each other to notify you when something is due.

Here’s what non-compliance actually costs you:

The good news: all of this is manageable when you know the deadlines and have a system. That’s exactly what this guide gives you.

Federal Tax Filing Requirements (IRS)

Regardless of whether your company earned income, you are required to file annual tax returns with the IRS. The type of return depends on your entity structure.

C-Corporation: Form 1120

All US C-Corporations  regardless of revenue  must file IRS Form 1120, the US Corporation Income Tax Return.

• Deadline: April 15 (15th day of the 4th month after the tax year end)
• Extension deadline: October 15 with Form 7004 (automatic 6-month extension)
• Zero income filing: Required even if the company had no revenue, no employees, and no activity
• State equivalent: Most states also require a corporate income tax return filed separately

Single-Member Foreign-Owned LLC: Form 1120 + Form 5472

A disregarded entity LLC (single-member) owned by a foreign person or foreign entity is one of the most misunderstood structures in US tax law. The IRS treats it as a corporation for reporting purposes under Treasury Regulation 1.6038A-1, which means it must file:

• Form 1120 (pro forma): As a reporting vehicle, not a tax payment  the LLC is still a pass-through for income tax purposes
• Form 5472: For every reportable transaction between the LLC and its foreign owner (see Section 3)

Multi-Member LLC: Form 1065

If your LLC has two or more members, it is treated as a partnership and files Form 1065 (US Return of Partnership Income).

• Deadline: March 15 (15th day of the 3rd month after the tax year end)
• Extension: September 15 with Form 7004
• K-1 forms: The LLC also issues Schedule K-1 to each member showing their share of income, deductions, and credits

S-Corporation: Form 1120-S

S-Corps file Form 1120-S annually, also due March 15. Note: foreign individuals and foreign entities generally cannot be S-Corp shareholders, making this structure less common for non-US founders.

Form 5472: The $25,000 Penalty for Foreign-Owned LLCs

Form 5472 is the most dangerous filing requirement most foreign founders don’t know about until they receive an IRS notice.

What Is Form 5472?

Form 5472 (Information Return of a 25% Foreign-Owned US Corporation or a Foreign Corporation Engaged in a US Trade or Business) must be filed by:

• Any US corporation that is 25% or more foreign-owned, AND
• Had any reportable transactions with a related foreign party during the year

Since 2017, the IRS expanded the rule to include single-member LLCs owned by foreign persons  making this a critical requirement for the majority of foreign-owned US companies.

What Counts as a Reportable Transaction?

Almost everything is a reportable transaction, including.

• Capital contributions from the foreign owner to the LLC
• Loans between the owner and the LLC
• Payment of LLC expenses by the foreign owner
• Distributions or withdrawals from the LLC
• Rent, royalties, or service fees paid between the LLC and owner
• Any money movement between the LLC and its foreign owner

How to File Form 5472

• Step 1: Prepare a pro forma Form 1120 (the LLC’s ‘corporate return’ for filing purposes only)
• Step 2: Complete Form 5472 listing all reportable transactions
• Step 3: Attach Form 5472 to the Form 1120 and mail to the IRS (electronic filing not available for this combination)
• Step 4: File by April 15 or request an extension with Form 7004

Because this must be filed by mail, plan ahead  IRS processing times can be slow and proof of mailing matters.

Form 7004: How to Request a Filing Extension

If you need more time to prepare your federal tax return, Form 7004 (Application for Automatic Extension of Time to File Certain Business Income Tax Returns) gives you an automatic 6-month extension.

Key Points About Form 7004

• It is automatic: The IRS grants the extension without reviewing your reason
• It extends the filing deadline, NOT the payment deadline: If you owe taxes, estimated payments are still due on the original due date
• For C-Corps: Extends deadline from April 15 to October 15
• For Partnerships and S-Corps: Extends deadline from March 15 to September 15
• File before the original deadline: Late Form 7004 submissions are rejected
• Electronic filing available: Form 7004 can be e-filed through IRS-authorized e-file providers

State Annual Report Requirements

Every US state requires registered entities  LLCs, corporations, and often foreign-registered companies   to file annual reports with the Secretary of State. These are separate from your federal and state tax filings.

Annual reports typically confirm or update basic company information: registered agent, principal address, members/officers, and other public records. Failure to file results in late fees, and eventually your company is administratively dissolved  meaning it ceases to legally exist.

Note: Requirements change frequently. Always verify current deadlines and fees on your state’s Secretary of State website or with a registered agent service.

Delaware Franchise Tax and Annual Report

Delaware is the most popular state for US company formation  especially for startups and foreign-owned businesses. It has two separate annual compliance requirements that are often confused

Delaware LLC Annual Report

• Due: June 1 each year
• Fee: $300 flat annual tax (paid to Delaware Division of Corporations)
• Note: Delaware LLCs pay an annual tax, not a ‘franchise tax’ — this is a flat fee regardless of income or activity

Delaware C-Corporation Franchise Tax

Delaware C-Corps must file an Annual Report and pay Franchise Tax by March 1 each year. The amount owed depends on the calculation method you choose:

• Minimum franchise tax: $175 using Assumed Par Value Capital Method
• Minimum using Authorized Shares: Starting at $175 for up to 5,000 shares but can reach $200,000+ for companies with millions of shares
• Annual Report filing fee: $50 (separate from franchise tax)
• Late penalty: $200 flat penalty + 1.5% monthly interest on unpaid tax

Wyoming Annual Report ($60 Fee)

Wyoming is increasingly popular among foreign-owned LLC founders for its low costs, strong privacy protections, and no state income tax. Wyoming’s annual compliance requirements are among the simplest in the US.

• Annual Report: Required every year by the Wyoming Secretary of State
• Due date: First day of the anniversary month of formation (if you formed in March, it’s due March 1 every year)
• Fee: $60 minimum (based on assets in Wyoming  minimum applies to most foreign-owned companies with no Wyoming assets)
• Filing method: Online through the Wyoming Secretary of State portal  typically takes under 5 minutes
• Late fee: $50 late fee after the due date
• Dissolution: Companies that miss two consecutive years of annual reports are administratively dissolved

Payroll Tax Obligations: FICA, FUTA & State Taxes

If your US company has employees  including yourself if you are a US resident or green card holder receiving a salary  you are required to withhold and remit payroll taxes. This is one of the most serious compliance areas because unpaid payroll taxes can create personal liability for company owners.

Federal Payroll Taxes

State Payroll Taxes

Most states with income taxes require separate state income tax withholding, state unemployment insurance (SUI), and sometimes state disability insurance. Requirements vary significantly by state.

Do Foreign Owners Without US Employees Need Payroll Taxes?

If your company has no US employees and all work is performed outside the US by non-US persons, you generally do not have US payroll tax obligations. However, this analysis changes if:

• You pay a US resident contractor who is then reclassified as an employee
• You have a US-based director or officer receiving compensation
• You are a foreign owner who becomes a US resident and takes a salary

Always get professional advice before determining you have no payroll tax obligations  the IRS is increasingly auditing worker classification.

Sales Tax Collection & Nexus Rules

US sales tax is not a federal tax  it’s administered by individual states, and there are over 10,000 taxing jurisdictions across the US. Whether your company is required to collect and remit sales tax depends on whether you have ‘nexus’ in a state.

What Is Sales Tax Nexus?

Nexus means a sufficient connection to a state that triggers sales tax collection obligations. Following the 2018 Supreme Court decision in South Dakota v. Wayfair, Inc., states can impose economic nexus meaning you can be required to collect sales tax even with no physical presence in a state.

Types of Nexus

• Physical nexus: Office, warehouse, inventory, employees, or contractors in a state
• Economic nexus: Exceeding a state’s sales threshold  typically $100,000 in annual sales OR 200 transactions into that state
• Click-through nexus: Affiliate relationships in a state that drive sales to your business
• Marketplace nexus: Selling through Amazon FBA or similar platforms may create nexus

Do Online Businesses Need to Collect Sales Tax?

Yes  if you sell taxable goods or services into states where you have nexus. Digital products, SaaS, and software have varying rules by state. Services are generally not taxable in most states, but this varies widely.

If you’re selling physical products through Amazon FBA, you almost certainly have nexus in multiple states through Amazon’s fulfillment centers. Use a sales tax automation tool like TaxJar, Avalara, or Quaderno to manage compliance automatically.

Corporate Transparency Act / BOI Reporting (2025–2026)

The Corporate Transparency Act (CTA) created a new Beneficial Ownership Information (BOI) reporting requirement administered by FinCEN (Financial Crimes Enforcement Network). This is separate from all IRS and state filings.

What Is BOI Reporting?

BOI reporting requires most US companies to disclose information about their beneficial owners  individuals who own 25% or more of the company, or who exercise substantial control directly to FinCEN.

2025–2026 BOI Reporting Status

After significant legal challenges and regulatory uncertainty, here is the current BOI status as of 2026.

• Existing companies (formed before January 1, 2024): Required to file initial BOI report  check current FinCEN deadlines as these shifted repeatedly during litigation
• Companies formed in 2024 or later: Must file within 30 days of formation or registration
• Updates required within 30 days: Any change in beneficial ownership, address, or ID documents

Who Is Exempt from BOI Reporting?

Large operating companies (20+ full-time US employees, $5M+ in annual revenue, physical US office), publicly traded companies, banks, credit unions, registered investment advisers, and certain other regulated entities are exempt. Most small foreign-owned LLCs and C-Corps are NOT exempt.

Good Standing Certificate What It Is and Why You Need It

A Certificate of Good Standing (also called a Certificate of Existence or Certificate of Status) is an official document issued by a state’s Secretary of State confirming that your company:

• Is currently registered and active in that state
• Has paid all required fees and taxes (including franchise taxes and annual report fees)
• Has not been dissolved, revoked, or otherwise administratively cancelled

When Do You Need a Good Standing Certificate?

• Opening a US bank account: Most banks require it before opening a business account
• Applying for business loans or credit: Lenders require proof of good standing
• Signing major contracts: Enterprise clients and investors often require it as part of due diligence
• Registering as a foreign entity: Required when expanding to do business in additional states
• Selling your business: Acquirers require good standing in all states where you’re registered

How to Get a Good Standing Certificate

Most states issue certificates through their Secretary of State website for a small fee ($10–$50). Processing times range from immediate (online) to several weeks (certified paper copies). Some states only issue paper certificates by mail.

Your registered agent service can typically order this on your behalf if you need a certified copy urgently.

Complete USA Compliance Checklist

Federal IRS Compliance

• Determine correct entity tax classification (disregarded entity, partnership, C-Corp, S-Corp)
• File annual tax return by deadline (Form 1120 / 1065 / 1120-S)
• File Form 5472 if you are a foreign-owned single-member LLC (attached to Form 1120)
• File Form 7004 if you need a filing extension (before original due date)
• Obtain an EIN (Employer Identification Number) if you haven’t already
• Apply for ITIN if you are a foreign individual who needs to sign tax returns

State Compliance

• Identify annual report requirements and deadlines for your state(s) of registration
• File state annual report on time each year
• Pay Delaware franchise tax / annual LLC tax if registered in Delaware
• Pay Wyoming annual report fee if registered in Wyoming
• Register as a foreign entity in any state where you have physical nexus
• Confirm your registered agent is active and will receive state correspondence

BOI / FinCEN Reporting

• File initial BOI report with FinCEN within required timeframe
• Update BOI report within 30 days of any change in ownership or control
• Keep copies of all BOI submissions with your company records

Payroll Tax (If Applicable)

• Confirm whether your company has employees who trigger US payroll tax obligations
• Set up payroll system to withhold and remit FICA, FUTA, and state payroll taxes
• File quarterly payroll tax returns (Form 941) if you have employees
• File Form W-2 for employees and Form 1099-NEC for US contractors by January 31

Sales Tax (If Applicable)

• Determine whether you have physical or economic nexus in any US state
• Register for sales tax permits in states where nexus exists
• Set up sales tax collection on your website or platform
• File sales tax returns on required schedule (monthly, quarterly, or annual by state)

Good Standing & Records

• Keep your registered agent active and address current in all states
• Maintain your company’s operating agreement / shareholder agreements
• Keep records of all bank accounts, transactions, and financial statements
• Order a Good Standing Certificate before any major business transaction
• Store all IRS correspondence, state notices, and tax returns for minimum 7 years

Frequently Asked Questions (FAQ)

Final Thoughts: Build Compliance Into Your Calendar

US company compliance is not complicated once you know the system but it requires attention to deadlines and an understanding that federal, state, and FinCEN requirements are completely separate from each other.

The most common mistake foreign founders make is assuming that because they paid to form their company, compliance is handled. It never is. Formation is day one. Compliance is every year after that.

Use the free compliance calendar PDF to set annual reminders for every deadline that applies to your company structure. Build a relationship with a US CPA who understands international tax. And if you’re unsure whether a filing applies to you, err on the side of filing the penalties for over-filing are zero, while the penalties for under-filing are steep.