Agencies and software. Contracts with US clients on an equal footing.

US clients prefer to sign with a US company: US invoice, US account, US tax number. We build this structure for agencies, software companies and service providers — and, for founders who want to approach investors in the US, the appropriate corporation.

In brief

With a US company, service providers with US clients issue invoices from the US, receive payments into a US account and provide a US tax number when signing contracts. If you want to approach investors in the US, you generally form a corporation. FIAON Global handles the formation, EIN, address and the preparation of the account application.

Why US clients prefer a US company

Purchasing departments in the US work with fixed procedures: a supplier with a US tax number, the right tax form, payment by US bank transfer. A foreign service provider often does not fit this pattern — a US company does. Then there is liability: contracts under US law with US clients sit with the US company, not with your company at home.

LLC or corporation

LLC — For service providers: Lean, without fixed corporate bodies. Suitable when the US company handles client work and does not take on investors.
Corporation — For founders with US investors: Investors in the US generally expect a corporation. Before formation, we review with you which state suits this.

What you need to know

A US company that is managed from Germany, Austria or Switzerland remains taxable there; its formation must be reported to the tax office (in Germany under section 138 of the German Fiscal Code, AO).
If you or your employees work in the US, visas and US employment law must be taken into account. Neither is part of the packages.
Contracts with US clients are reviewed by a US lawyer; the packages include your company’s operating agreement, not your client contracts.

The right package

The company, tax numbers and the first account and card application: Global Structure.

Frequently asked questions

Why do US clients ask for a US tax number?

US companies ask suppliers for a tax number and a tax form (W-9 or W-8) because they report payments to the tax authority. With a US company of your own and an EIN, you can answer this request as a US business; our US CPA clarifies which form your company completes.

Do I need a corporation for US investors?

Generally yes. Investors in the US usually expect a corporation. We review the right choice before formation.

Does FIAON review my client contracts?

No. The packages include the operating agreement drafted by our partner lawyer. Client contracts are reviewed by a US lawyer under your own engagement.

Read on

US company formation. With a team on the ground, at a fixed price. – Your US company from Germany or Switzerland: LLC or corporation, EIN, ITIN, registered agent and address. Fixed price, all fees included.
LLC or corporation? The choice that shapes everything else. – LLC or C corporation: liability, taxation, investors, formalities and costs compared — and when each legal form suits your plans.
Delaware. The state for investors. – Delaware LLC: $110 to form, $400 annual tax from tax year 2026, due 1 June. When Delaware is the right fit — and when it is not.
Your LLC’s US tax return. Which forms, which deadlines. – Pro forma 1120, 1040-NR, 1065, 1120-F, FBAR: which US returns your LLC must file, by structure — with deadlines and the double taxation agreement.