Skip to main content
itin.net
Visual cover for U.S. Bank Account guidance for SaaS founders based in Portugal
Banking15 min read

U.S. Bank Account Tips for SaaS founders from Portugal

SaaS founders in Portugal face unique hurdles opening U.S. bank accounts. Learn the specific requirements, documentation, and common pitfalls to secure your account efficiently.

Reviewed by , ITIN Specialist at itin.net.

Why SaaS Founders in Portugal Need a U.S. Bank Account

SaaS founders in Portugal commonly encounter friction when trying to open a U.S. bank account, primarily due to U.S. banking regulations and the specific needs of technology businesses. Unlike local Portuguese businesses, U.S. payment processors, online service providers, and venture capital firms often require a U.S. entity and a U.S. bank account for seamless transactions and investment. This is particularly true for SaaS businesses that rely on platforms like Stripe for payment processing or plan to seek U.S.-based venture capital funding. The typical U.S. bank application process is designed for U.S. residents and businesses, creating a significant hurdle for non-residents. Most large U.S. national banks outright decline applications from individuals and businesses without a U.S. physical presence or a U.S. tax identification number, such as an SSN or ITIN. This leaves Portugal-based SaaS founders needing specialized solutions to establish their U.S. financial infrastructure. Your ability to accept payments, pay U.S.-based contractors, and receive investment hinges on overcoming this initial banking barrier. Without a U.S. bank account, you may face higher transaction fees, delayed payments, or an inability to onboard with critical U.S. service providers, directly impacting your business growth and operational efficiency.

When a U.S. Bank Account Becomes Essential

A U.S. bank account is often triggered by specific platform requirements and business objectives common among SaaS founders. For instance, payment processors like Stripe, which is widely used by SaaS businesses globally, often have more streamlined integration and better terms when an associated bank account is within the same country as the business entity. While Stripe can often work with non-U.S. accounts, having a U.S. account can simplify compliance and reduce cross-border transaction fees. Furthermore, if you are planning to raise capital from U.S. venture capital firms, they will almost universally require your company to be incorporated in the U.S. (often as a Delaware C-Corp) and to have a U.S. bank account. This simplifies their investment process and aligns with U.S. financial reporting standards. For SaaS founders operating under the Portuguese NHR (Non-Habitual Resident) regime, managing U.S. revenue streams can be complex. A dedicated U.S. bank account provides a clear separation for U.S.-based income and expenses, potentially simplifying tax reporting in both Portugal and the U.S. The need for a U.S. bank account isn't just about convenience; it's often a prerequisite for accessing key U.S. markets, investors, and financial tools essential for scaling a SaaS business.

Required Documentation for U.S. Bank Accounts

Opening a U.S. bank account as a non-resident requires specific documentation, which varies slightly between traditional banks and fintech alternatives. For business accounts, the most critical document is an Employer Identification Number (EIN), also known as a federal tax identification number. This is obtained from the IRS by filing Form SS-4. Without an EIN, most U.S. banks will not open a business account for a non-U.S. entity. You will also typically need your company's formation documents. If you've formed a U.S. LLC, this would include your Articles of Organization and Operating Agreement. If your company is incorporated elsewhere, you'll need equivalent documents proving your business's legal existence. Personal identification is also mandatory. This includes a copy of your valid passport and, in some cases, a second form of identification like a national ID card. Proof of residential address, both in Portugal and potentially a U.S. address if applicable (e.g., a registered agent address), is usually required. Some banks may also ask for a utility bill to verify your address. Fintech solutions like Mercury or Relay may have slightly different requirements, sometimes allowing for applications without a prior EIN, but generally require similar identification and business documentation. Ensure all documents are current and accurately reflect your legal business name and personal details.

The U.S. Bank Account Application Process

The process to open a U.S. bank account remotely typically takes between 5 to 10 business days from the moment you submit a complete application. It begins with selecting a financial institution. For non-residents, this often means choosing fintech alternatives like Mercury, Relay, or Brex, as most traditional U.S. banks have stringent requirements for physical presence. After selecting your bank, you will complete their specific Know Your Customer (KYC) and Anti-Money Laundering (AML) application. This involves uploading all the required documents mentioned previously: your EIN confirmation letter (CP-575), company formation documents, passport, and proof of address. For business accounts, the bank will verify your company's registration and EIN. For personal accounts, they focus on identity verification. Once submitted, the bank's compliance team reviews your application and documentation. This review can take several business days. If approved, the bank will notify you and proceed with account setup. You will then receive your account details, and your debit card will be mailed to your registered address. The total timeline from initial application to having an active account and debit card is usually within the 5–10 business day window, provided all documentation is accurate and complete. Delays often occur due to missing or incorrect information.

Common Pitfalls for Portugal-Based SaaS Founders

SaaS founders in Portugal often fall into specific traps when applying for a U.S. bank account. A primary pitfall is attempting to open an account with major U.S. national banks without first securing an EIN and understanding their non-resident policies. Many of these banks simply do not offer remote account opening for non-U.S. residents, leading to wasted effort and frustration. Another common mistake is not having the correct business formation documents ready. For example, if you're forming a U.S. LLC for your SaaS business, you need your Articles of Organization and a clear Operating Agreement, not just a business name. Failing to provide these, or providing outdated versions, will cause delays or rejections. Misunderstanding the EIN requirement is also frequent; while fintechs might offer accounts without a prior EIN, most traditional banks and many payment processors will eventually require it. Applying without an EIN can lead to account limitations or future issues. Lastly, issues with documentation accuracy are common. Mismatched names between your passport, company documents, and application forms, or unclear proof of address, can halt the process. Ensure all details are identical across every document you submit.

The Certified Acceptance Agent (CAA) Advantage

For non-residents applying for a U.S. bank account, especially when an ITIN is involved or required for certain business structures, working with a Certified Acceptance Agent (CAA) offers a streamlined and secure path. As a CAA, itin.net can assist with the ITIN application process, which is often a prerequisite for non-residents needing certain U.S. financial services or tax filings. The CAA acts as an intermediary between you and the IRS, verifying your identity and the accuracy of your application for an ITIN. This is crucial because the IRS requires original identification documents to be mailed to them directly, which carries risk. A CAA can certify copies of your identification documents, allowing you to keep your originals. While a U.S. bank account itself doesn't always require an ITIN (an EIN is more common for businesses), the ITIN process is managed by CAAs like itin.net. This expertise in U.S. tax identification numbers is invaluable. For SaaS founders in Portugal, this means a trusted partner can help navigate the complexities of U.S. tax compliance, which is intrinsically linked to financial operations. Using a CAA ensures your application is processed correctly, reducing the risk of errors that could delay your ITIN or, by extension, your ability to open necessary U.S. financial accounts.

Next Steps After Account Opening

Once your U.S. bank account is active, you can proceed with integrating it into your SaaS business operations. This typically involves updating your payment processor, such as Stripe, to use your new U.S. bank details for payouts. If you plan to seek U.S. venture capital, ensure your company structure (e.g., a U.S. LLC or C-Corp) and banking are in order before approaching investors. For U.S. LLCs, remember the requirement to file Form 5472 annually with the IRS to report transactions with your foreign owner, even if you have no U.S. tax liability. This form is distinct from income tax returns and carries significant penalties for non-compliance. Reviewing the pricing and services offered by itin.net for banking setup or comprehensive business formation can provide further clarity and support. If you have specific questions about your situation or require assistance with the U.S. banking setup process, contacting itin.net directly is the recommended next step.

Practical tips

  • Obtain an EIN before applying to most U.S. banks, as it is a standard requirement for non-resident business accounts.
  • Use your legal name exactly as it appears on your passport across all applications to avoid identity verification issues.
  • Ensure your Portugal proof of address is recent (within the last 3 months) and clearly shows your name and residential address.
  • Understand the difference between a U.S. business bank account (requiring an EIN) and a personal account (requiring ITIN or SSN), and choose based on your business needs.
  • If you're forming a U.S. LLC, be prepared to file IRS Form 5472 annually to report transactions with your foreign owner.

Frequently asked questions

Can I open a U.S. bank account from Portugal without visiting the U.S.?

Yes, many fintech solutions like Mercury, Relay, and Brex allow non-residents in Portugal to open U.S. bank accounts remotely. Traditional banks often require an in-person visit or a more complex application process.

What is the role of an EIN for my SaaS business?

An Employer Identification Number (EIN) is a federal tax ID issued by the IRS. It's essential for opening business bank accounts, hiring employees, and filing U.S. taxes. Most U.S. banks require an EIN for non-resident business accounts.

How long does it take to get an EIN for my U.S. company?

If you have a U.S. Taxpayer Identification Number (SSN or ITIN), you can often get an EIN the same day you apply online. For foreign applicants without a U.S. TIN, applying by fax or mail can take several weeks. The IRS typically issues EINs within 4-5 business days via fax, and 4-5 weeks via mail.

Do I need an ITIN or an EIN to open a U.S. bank account?

For a U.S. business bank account, an EIN is generally required. For a personal U.S. bank account, you would typically need a Social Security Number (SSN) or an Individual Taxpayer Identification Number (ITIN). Many fintechs offer business accounts that can be opened with just company formation documents and identification, but an EIN is often needed eventually.

What are the tax implications of having a U.S. bank account for a Portuguese resident?

Having a U.S. bank account itself does not automatically create U.S. tax obligations if you are a resident of Portugal. However, income generated within the U.S. or through a U.S. entity may be taxable. The U.S.-Portugal tax treaty aims to prevent double taxation. It's advisable to consult with a tax professional specializing in U.S.-Portugal taxation to understand your specific obligations.

Can I use my Portuguese address for a U.S. bank account?

Most U.S. banks and fintechs will allow you to use your Portuguese residential address as your primary address. However, you may also need to provide a U.S. address, such as that of your registered agent if you have formed a U.S. entity. Ensure you clarify this requirement with the specific institution.

Ready to Apply for Your ITIN?

Our IRS-Certified Acceptance Agents make the process simple and remote — from anywhere in the world.

  • IRS Certified
  • 5–10 Business Days
  • Money-Back Guarantee