A U.S. LLC for Non-Resident SaaS and Digital Founders

TL;DR

Non-resident SaaS founders form U.S. LLCs for access — Stripe, U.S. invoicing, platform requirements — not because software changes the tax rules. It doesn’t: a foreign-owned single-member LLC selling subscriptions files the same Form 5472 + pro forma 1120 as any e-commerce seller, the income tax question is the same ECI assessment, and state sales tax on SaaS is a third, separate system that surprises founders most.

What does the U.S. LLC actually buy a SaaS founder?

Infrastructure, mainly. A U.S. entity with an EIN unlocks Stripe and most U.S. payment processing, satisfies platform and app-store business requirements, invoices U.S. enterprise customers without procurement friction, and reads as familiar to U.S. investors. What it does not automatically do: reduce tax, create tax residency, or exempt anyone from home-country obligations. It is a commercial adapter, not a tax strategy.

Which filings apply — and do they differ from e-commerce?

Barely. The compliance skeleton is identical:

Founder loans to the company, initial funding, salary-like draws, expenses paid on a personal card — every one is a reportable transaction for the 5472. A pre-revenue SaaS LLC with only founder funding still files.

Where does the income tax question land for software work?

On the same ECI framework as everyone else — but with founder-friendly facts more often. The classic pattern: all development and operations performed outside the U.S., no U.S. office, no dependent agents, customers reached over the internet. Those facts argue against effectively connected income — but the conclusion is a judgment call on your specifics, not a rule anyone can quote. Anyone offering a blanket “SaaS = no U.S. tax” is skipping the analysis; the honest answer is assessed once, in writing, then revisited when facts change (a U.S. contractor here, a founder relocation there).

The sales tax blind spot

Federal income tax and state sales tax are different machines. Post-Wayfair, states assert nexus on revenue thresholds alone, and a meaningful number of states tax SaaS subscriptions. This has nothing to do with Form 5472 and nothing to do with ECI — it is a customer-billing compliance question that turns on where your revenue concentrates. It deserves its own review once U.S. revenue is real; bundling it into “my LLC filing” is how it gets missed.

Official references: IRS — Effectively connected income (ECI) · IRS — About Form 5472.

This article is general information, not tax or legal advice. ECI and sales-tax conclusions depend on your specific facts — have them assessed before relying on any general pattern.