Non-US founders often make the same ten mistakes when they set up a US LLC, and most of them are easy to avoid once you know where they hide. This guide walks through each one and tells you what to do instead.
Picking the wrong state
Many founders choose a state because they have heard the name, not because it fits their business. If you sell in one state, you may need to register there anyway. If you sell online with no physical presence, a low-cost, low-paperwork state like Wyoming, Kentucky, or Colorado is usually simpler. Formation in these states typically takes 1 to 3 business days. Most other states take 1 to 2 weeks. Rules and fees change, so always check the state's site before you file.
Mixing personal and company money
Running personal and business funds through the same account is one of the fastest ways to lose the legal protection an LLC is supposed to give you. It also makes your books a mess at tax time. Open a dedicated business bank account as soon as your EIN arrives, and keep every business dollar separate from day one.
Missing Form 5472
If you own a foreign-owned single-member LLC, the IRS wants Form 5472 filed with a pro forma 1120 by April 15 each year. This is a federal filing requirement, not optional paperwork, and penalties for missing it are steep. Mark the date, gather your transaction records early, and file on time every year.
Ignoring the annual report
Most states require an annual or biennial report to keep your LLC in good standing. Skip it and your company can be marked delinquent or even dissolved by the state. Filing deadlines and fees vary by state, so check the state's site for your specific due date and do not assume it matches your formation anniversary.
Skipping the operating agreement
An operating agreement is not just a formality. It sets out ownership, decision-making, and what happens if a member leaves. Banks, investors, and courts all expect to see one. Without it, you are relying on default state rules that may not match what you actually agreed with your co-founders.
Using a home address
Listing a home address as your business address puts your personal information on public record and can create tax or residency confusion in your home country. A registered agent and a proper business address keep your paperwork clean and your home life private.
Letting the registered agent lapse
Every US LLC needs a registered agent with a physical address in the state of formation. If that service lapses, you can miss legal notices and state filings without knowing it, which can lead to your LLC falling out of good standing. Treat registered agent renewal as a fixed cost of doing business, not an optional extra.
Signing nothing, or signing informally
Verbal agreements and screenshots of a chat are not a substitute for signed documents. Founder agreements, contractor agreements, and client contracts should all be in writing and properly signed. This protects you if a dispute comes up later, and it is often required before a bank or payment processor will fully approve your account.
Not doing bookkeeping
Waiting until tax season to sort out a year of transactions is stressful and error-prone. Regular bookkeeping, ideally monthly, means you always know your cash position, you catch mistakes early, and your annual filings are far easier to prepare. It also makes it much simpler to prove your numbers if a bank or tax authority asks.
Waiting too long to apply for the EIN
Your EIN unlocks almost everything else: a business bank account, payment processing, and your tax filings. For non-resident owners without an SSN, standard EIN processing can take 2 to 4 weeks. If you wait until you need a bank account to start the EIN process, you delay your entire launch. Apply as early as possible, and consider expedited processing if your timeline is tight.
A quick view of what each mistake costs you
| Mistake | Main risk |
|---|---|
| Wrong state | Extra registration, ongoing fees you did not plan for |
| Mixed funds | Weakened liability protection, messy books |
| Missed Form 5472 | Federal penalties |
| Ignored annual report | Loss of good standing, possible dissolution |
| No operating agreement | Disputes with no clear resolution |
| Home address | Privacy loss, possible tax confusion |
| Lapsed registered agent | Missed legal and state notices |
| Unsigned agreements | Weak legal position in disputes |
| No bookkeeping | Errors, stress, and harder filings |
| Late EIN application | Delayed bank account and payments |
How PowerLaunch helps you avoid these
PowerLaunch forms your LLC or C-Corporation and runs it on the MyCG.AI finance platform, so most of this list is handled by design rather than left to memory. The Launch plan, at $295 a year plus the state filing fee, includes formation, EIN, an operating agreement or bylaws, a registered agent, and a virtual business address. The Run plan, at $1,995 a year, adds the annual state report filing, a licensed tax professional consultation, business IRS tax filings, transaction tracking with AI categorization, and monthly and quarterly closings. Scale, at $2,995 a year or $329 a month, adds expedited EIN, free dissolution, and a dedicated bookkeeper. If a formation error is PowerLaunch's fault, it gets corrected at PowerLaunch's cost and that portion of the fee refunded, though state fees are never refundable.
On BOI reporting, US-formed companies are currently exempt under the 2026 interim FinCEN rule, but these rules can change, so it is worth checking in each year rather than assuming the exemption always applies.
What to do next
If you recognize any of these mistakes in your own setup, the fastest fix is to talk it through. Book a free 20-minute consultation at powerlaunch.solutions/book to review your state choice, your filings, and your EIN timeline. When you are ready to move, head to powerlaunch.solutions/signup and pick the plan that matches how much of this you want handled for you.
