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Form Your U.S. Business
With Confidence

IRS-authorized experts helping global entrepreneurs launch and grow U.S. companies — from formation to full tax compliance.

IRS Authorized Acceptance Agent · Licensed & Compliant
US Business Formation — USBase

Formations This Year

1,200+

Client Satisfaction

4.9 / 5.0
Specialists In U.S. Company & Tax Services
10+ Years Industry Experience
Over 5,000 Satisfied Clients Worldwide
Support by Email Dedicated Account Manager
Our Expertise

Everything You Need to
Operate in the U.S.

US Business Formation — USBase
Company Formation

Launch Your U.S. LLC or Corporation in Days

Whether you're an international entrepreneur or a U.S. resident, we handle every step of your company formation — from choosing the right state to delivering your official documents.

LLC, C-Corp, and S-Corp formations in all 50 states
Operating agreements and articles of organization prepared
Registered Agent service included
EIN application filed on your behalf
Documents delivered digitally within 3–5 business days
Start Formation
US Business Formation — USBase
EIN & ITIN

Get Your IRS Tax Numbers Fast & Correctly

As an IRS Authorized Acceptance Agent, we prepare and submit your EIN and ITIN applications directly to the IRS — no rejections, no delays.

EIN (Employer Identification Number) for your business
ITIN (Individual Taxpayer Identification Number) for non-residents
IRS Authorized Acceptance Agent — no rejection risk
EIN typically issued within 1–2 business days
Full support for ITIN renewal and corrections
Apply for EIN/ITIN
US Business Formation — USBase
Tax Filing

U.S. Tax Compliance Made Simple for Everyone

From individual returns to complex corporate tax filings, our licensed professionals ensure full IRS compliance — whether you live in the U.S. or abroad.

Federal and state tax return preparation
Non-resident (1040-NR) and resident tax returns
S-Corp, Partnership, and LLC tax filings
FBAR and international reporting compliance
Year-round tax advice and planning
File Your Taxes
Simple Process

Get Started in 4 Simple Steps

We make U.S. business formation and compliance as simple as possible. Our streamlined process takes care of everything, so you can focus on building your business.

1

Choose Your Service

Select the service you need — company formation, EIN/ITIN, tax filing, or any of our 20+ services.

2

Submit Your Info

Fill out a secure online form with your details. No jargon, no confusion — we guide you every step.

3

We Handle Everything

Our licensed experts file your documents directly with the IRS, Secretary of State, or other agencies.

4

Receive Your Documents

Get your official documents delivered digitally. Your business is officially up and running in the U.S.

What We Offer

A Full Suite of U.S. Business Services

From the moment you decide to form a U.S. company to ongoing compliance, we've got every service you need under one roof.

Client Reviews

Hear What Our Clients Have to Say

Over 5,000 entrepreneurs from around the world have trusted USBase to launch and manage their U.S. businesses.

"I was worried about forming a U.S. company from abroad, but USBase made the entire process effortless. My LLC was ready in 4 days and I had my EIN within 24 hours. Absolutely outstanding service!"

MK
Mehmet K. Entrepreneur · Istanbul, Turkey US Company Formation

"The ITIN application process can be incredibly complex for foreigners. USBase handled every document, certified by an IRS Acceptance Agent. My application was approved without a single issue. Highly recommended!"

RC
Ricardo C. Freelancer · São Paulo, Brazil ITIN Application

"I've been using USBase for 3 years now — company formation, annual reports, and tax filing. They're always on top of deadlines and the communication is excellent. This is the partner every international business owner needs."

SL
Sarah L. E-commerce Owner · London, UK Full Service Package

"Professional, fast, and thorough. USBase filed my company's federal tax return and handled everything from start to finish. I'll never use another service for my U.S. business needs."

AK
Ahmed K. Tech Startup Founder · Dubai, UAE US Company Tax Preparation

"The registered agent service is essential for any non-US resident with a U.S. company. USBase makes it seamless — I receive all my important documents forwarded promptly. Great value for the price."

YM
Yuki M. Software Developer · Tokyo, Japan Registered Agent Service

"I tried to apply for a trademark on my own and got rejected. USBase handled the USPTO application perfectly. My brand is now fully protected in the U.S. market. Worth every penny."

CP
Carlos P. Brand Owner · Mexico City, Mexico US Trademark Application
FAQ

Frequently Asked Questions

Get answers to the most common questions about U.S. company formation, EIN/ITIN, and our services.

Yes! There are no citizenship or residency requirements to form an LLC or corporation in the United States. You can form a U.S. company from anywhere in the world. At USBase, we specialize in helping international entrepreneurs set up their U.S. businesses remotely — entirely online.

An EIN (Employer Identification Number) is a federal tax ID number issued by the IRS. It's required to open a U.S. business bank account, hire employees, file taxes, and set up payment processors like Stripe or PayPal. Virtually every U.S. business needs one. We obtain EINs on behalf of our clients — typically within 1–2 business days.

An ITIN (Individual Taxpayer Identification Number) is issued by the IRS to individuals who are required to have a U.S. taxpayer number but are not eligible for a Social Security Number (SSN). Non-U.S. residents who earn U.S.-source income, own U.S. businesses, or file U.S. tax returns typically need an ITIN. As an IRS Authorized Acceptance Agent, we certify your documents and submit your application directly to the IRS.

The most popular states for non-residents are Delaware, Wyoming, and New Mexico — each offering distinct advantages. Delaware is preferred for venture-backed startups and corporations due to its well-established corporate law. Wyoming offers strong privacy protections and low fees, making it ideal for LLCs. New Mexico offers affordable annual costs and good privacy. Our experts will recommend the best state based on your specific business goals.

No, you don't need a personal U.S. address. However, your company is legally required to have a Registered Agent with a physical U.S. address in the state of formation. USBase provides Registered Agent service in all 50 states, which satisfies this requirement and ensures you never miss important legal or government correspondence.

Processing times vary by state, but most LLC formations are completed in 3–7 business days. Some states like New Mexico and Wyoming process formations in as little as 1–2 business days. We also offer expedited processing options for most states. Once formed, we'll have your EIN and documents ready for you promptly.

Most U.S. companies need to file an Annual Report and pay a renewal fee to their state each year. Depending on your business activity and structure, you may also need to file federal and state tax returns. Some states also have franchise tax requirements. USBase offers complete ongoing compliance management — we track your deadlines and handle all filings for you.

Yes. USBase is an IRS Authorized Acceptance Agent, which means we are officially authorized by the IRS to assist individuals and entities in completing their ITIN applications. We certify identity documents, verify their authenticity, and submit applications directly to the IRS — which significantly speeds up processing and reduces the risk of rejection compared to self-filing.

Knowledge Hub

Latest from Our Blog

View All Articles

Expert guides, tips, and news about U.S. business formation, taxes, and compliance — written to help you succeed.

US Business Formation — USBase Formation
June 10, 2025 6 min read

LLC vs C-Corp: Which U.S. Business Structure Is Right for You?

Choosing between an LLC and a C-Corp is one of the most important decisions for your U.S. business. Here's a complete comparison.

Read Article
US Business Formation — USBase EIN & ITIN
May 28, 2025 5 min read

How to Get an EIN as a Non-U.S. Resident: A Step-by-Step Guide

Non-residents face unique challenges when applying for an EIN. Learn how to avoid common mistakes and get approved fast.

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US Business Formation — USBase State Guide
May 12, 2025 7 min read

Why Wyoming Is the Best State to Form Your LLC in 2025

Wyoming consistently ranks as the top state for LLC formation. No state income tax, strong privacy laws, and low annual fees.

Read Article
Free Consultation

Launch Your U.S. Business
From Anywhere in the World

No U.S. address needed. No citizenship required. Our experts guide you through every step — company formation, ITIN, EIN, and tax filing.

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