Form Your U.S. LLC, C-Corp, S-Corp, or Nonprofit
Form any company type (C-Corp, S-Corp, LLC, or Nonprofit) in any U.S. state, fast, accurate, and fully compliant. We handle state filings, EIN, bylaws or operating agreements, tax elections, and compliance tracking so you can focus on growing your business.
Select and Form Your U.S. Business Entity
Find the best structure and manage your taxes — compare entity types, benefits, and income tax options before you start.
C-Corporation
Starting at $580Perfect for businesses seeking strong investor credibility and large-scale growth.
- Unlimited shareholders
- Easy equity transfer
- Strong liability protection
- Income Tax: Corporate
S-Corporation
Starting at $880Best for small businesses that want corporate protection with pass-through taxation.
- Up to 100 shareholders
- Payroll tax savings
- Limited liability
- Income Tax: Personal
LLC Formation
Starting at $1480The most flexible option for entrepreneurs and freelancers.
- Simple management
- Personal asset protection
- Flexible tax election (S- or C-Corp)
- Income Tax: Personal (default) / Corporate (optional)
Nonprofit Organization
Starting at $399Build a mission-driven entity with federal tax-exempt benefits.
- IRS 501(c)(3) status
- Grant eligibility
- Donor deductions
- Income Tax: Exempt (if approved)
Green Card Services
Starting at $49Immigration assistance for individuals and entrepreneurs applying for U.S. residency.
- Application preparation assistance
- Document review support (not legal advice)
- Status tracking
- Residency process guidance
Income Tax Filing & Planning
Starting at $175Professional income tax service for both corporations and individuals.
- Federal & State filing support
- Business and personal returns (Form 1120, 1040, 1065, etc.)
- IRS compliance and deadline tracking
- Tax optimization strategies for startups and growing companies
Why Choose CORPIUS?
We make U.S. business formation fast, accurate, and supported by real experts and AI precision.
Lightning Fast
Form your company in 1–3 business days with our automated state filing process.
Transparent Pricing
Clear, upfront pricing. No hidden costs, no surprise fees — what you see is exactly what you pay.
Expert Support
Get document preparation guidance and filing support from experienced professionals.
What Our Clients Say
Join thousands of entrepreneurs who trust CORPIUS.
" CORPIUS made forming my LLC incredibly simple. The process was fast, professional, and they guided me through every step."
"Excellent service for nonprofit formation. They handled all the complex paperwork and helped us achieve tax-exempt status quickly."
"Professional, efficient, and knowledgeable. I recommend CORPIUS to anyone looking to incorporate their business."
* Testimonials are representative client experiences. Results may vary. Individual outcomes depend on business type, state, and other factors.
Ready to Start Your Business?
Join thousands of entrepreneurs who trust CORPIUS to form, protect, and grow their U.S. companies.