Firstbase
Build Your Complete US Business Stack
Firstbase is more than just incorporation. It's the gateway for global founders to access the US financial system, integrated directly with banking, payments, and accounting tools.
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Kiree Verdict
What You'll Need
Ready to start? Here is the checklist of information and documents you should have prepared before you begin the application.
Supported Countries
Firstbase is optimized for founders from almost every corner of the globe. Here are the top regions supported:
Who Should Choose Delaware?
Delaware
★★★★★Best For VC-Backed Startups
- Preferred by VCs & Investors
- Optimized for C-Corp structure
- World-class Court of Chancery
Wyoming
★★★★☆Best For Bootstrapped Businesses
- Lower annual fees (Franchise Tax)
- Stronger asset protection & privacy
- Ideal for LLC structures
Bank Compatibility
| Banking Partner | Support Level | Notes |
|---|---|---|
| Mercury | ✅ Full | Direct API integration, instant application. |
| Brex | ✅ Full | Excellent for venture-backed C-Corps. |
| Relay | ✅ Full | Best for small business LLCs. |
| Wise Business | ⚠️ Partial | Depends on founder residency. |
| Airwallex | ⚠️ Partial | Regional restrictions may apply. |
Payment Processor Compatibility
Opening a US company is often the first step to unlocking premium payment gateways. Firstbase is 100% compatible with:
Stripe
PayPal
Square
Adyen
Authorize.net
Checkout.com
Worldpay
Braintree
US Tax & Compliance Overview
Federal Requirements
- BOI Reporting: Mandatory for all new entities.
- Form 5472: For foreign-owned US LLCs.
- Income Tax: Depends on your "ETBUS" status.
State Requirements
- Annual Report: Yearly filing to keep entity active.
- Franchise Tax: DE (~$300/yr), WY (~$60/yr).
- Registered Agent: Must maintain a physical address.
Build Your Complete US Business Stack
Kiree's recommended workflow for global founders. Each node is integrated for maximum automation.
"The automated brain for your global business."
After Your Company Is Ready
Incorporation is just the beginning. Follow this roadmap to get your business fully operational.
Open a US Bank Account
Apply for Mercury or Brex directly through Firstbase.
Apply for Stripe
Unlock global payments with your new US entity and EIN.
Set Up Accounting
Connect Xero or Puzzle to automate your bookkeeping.
Issue Company Cards
Manage team spend with Ramp or Brex virtual cards.
Hire Contractors Globally
Use Deel to scale your team across 150+ countries.
Frequently Asked Questions
Do I need a US SSN to use Firstbase?
No. Firstbase specializes in helping international founders without a Social Security Number (SSN) obtain an EIN and open US bank accounts.
Can I open a bank account remotely?
Yes. Through Firstbase's partnerships with Mercury and Brex, most founders can open a US business bank account entirely online without visiting the US.
How long does the EIN take?
For US residents, it's instant. For non-residents, it typically takes 2–4 weeks depending on IRS processing times.
Is the $399 a recurring fee?
No, the $399 is a one-time fee for incorporation. There is an optional $99/year fee for ongoing compliance and registered agent services starting from the second year.