Business formation

Start your U.S. business today

Name search, state registration, EIN, registered agent and the documents your bank will ask for — filed in the right order by a bilingual team with 10+ years of practice.

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Packages

Three ways to open

Every package includes state registration, your EIN and registered agent service. State filing fees are billed separately.

Basic

Get registered and get moving

$545+ state fee

  • Business name availability search and verification
  • State business registration
  • Employer Identification Number (EIN)
  • Registered agent service (official notices only — no business address provided)
  • Full support throughout the formation process
Most chosen

Essentials

Registered, plus the documents banks ask for

$645+ state fee

  • Business name availability search and verification
  • State business registration
  • Employer Identification Number (EIN)
  • Registered agent service (official notices only — no business address provided)
  • Operating agreement / corporate bylaws
  • Full support throughout the formation process

Plus

Everything, including S Corp election

$845+ state fee

  • Business name availability search and verification
  • State business registration
  • Employer Identification Number (EIN)
  • Registered agent service (official notices only — no business address provided)
  • Operating agreement / corporate bylaws
  • Membership certificate / stock certificate issuance
  • Executive corporate binder with complete company documentation
  • Seller's permit registration
  • S Corporation election (Form 2553)
  • Full support throughout the formation process

How it works

Three steps to open

  1. 01

    Upload documents and information

    One secure checklist in the client portal — we tell you exactly what is needed for your state.

  2. 02

    We prepare and file

    Name search, state registration, EIN and the documents in your package, filed in the right order.

  3. 03

    Final delivery and next steps

    You receive every document, plus what to do about the bank account, bookkeeping and filing dates.

Why choose us

Support that does not stop at filing

Clear communication

Every step explained in English or Portuguese, whichever you prefer.

Quick assistance

Same-business-day answers during business hours, all year round.

Secure documents 24/7

Your files stay in one secure portal you can open any time.

Complete packages

The filings and documents you need for a clean start are already included.

License support available

Licenses are not included in the packages, but we can research the permits your industry and state require as an add-on service.

Full business support

Bookkeeping, payroll and tax services from the same team afterwards.

FAQ

Before you open

LLC or Corporation?
An LLC gives flexibility and pass-through taxation; a Corporation offers limited liability and the ability to issue stock. We recommend one after looking at how you operate.
Can I open a company from outside the U.S.?
Yes. You still need to follow U.S. rules, and most states require a U.S. address for registration — that address is yours to provide; we do not supply a physical or mailing address. Our registered agent service only receives official state and legal notices on your behalf.
What does the state fee cost?
It varies by state and entity type and is billed separately from the package price. We tell you the exact amount before filing.
Can I change the structure later?
Often yes, depending on how you started. Many clients begin as an LLC exactly for that flexibility.
Do you handle the EIN separately?
The EIN is included in every formation package — we do not handle it as a standalone service.

Client reviews

Owners who started here

I don't even know where I would be without Cristina and her team at Office Tax! They opened my business in 2020, and since then they have been providing bookkeeping and payroll services with impeccable guidance and support. The fact that communication is in Portuguese also makes it much easier and helps me understand my business, finances and the US system more clearly. The team's expertise and quick assistance make all the difference. I have complete confidence that all the tax and accounting bureaucracy is being done correctly and in the best way to help me save taxes and not pay fines. Thank you for always being there and for ensuring that my company is always up to date and running smoothly!
Rosiane BarbosaBusiness owner
I've been working with Cristina and her team for some time now, and I truly couldn't ask for a better accounting office. They are not only professional and knowledgeable but also incredibly supportive and responsive. From bookkeeping and accounting to filing my taxes and even helping me set up my LLC, they've guided me through every step with clarity and care. What sets them apart is their integrative approach — everything is well-organized, and I always feel informed and on track. Whether it's a quick question or a more complex issue, I know I can count on them.
Roberta MacGoogle review
The best business set-up and accounting service. I have no headaches because I know I can trust and count on you guys! You were so professional setting up both of our companies. Thank you so much for all the support! We recommend Office Tax Services — fair price and a super professional team!
Septem USAGoogle review

Ready to work together?

Bring your questions and your last tax return. We will tell you exactly where you stand.