Register a company in Connecticut

Yes. The Certificate of Organization is filed online through Business.CT.gov, our registered agent supplies the Connecticut place of business the law asks for, and the EIN comes from the IRS by fax or phone with no SSN needed. Annual reports are online-only. Banking can be remote too: fintech platforms onboard without a visit, while a traditional bank becomes a route once the business has a US footprint.

Formation starts from $2,400 all-in, including the Connecticut LLC filing fee ($120), the registered agent for the first year, the EIN and the operating agreement. With a fintech or bank account set up, from $4,400. After that, the state charges $80 a year for the LLC annual report; a C-Corp pays $150 for its report and at least $250 in corporation business tax.

For a services or online business owned from abroad we usually start with an LLC. Profit is taxed through the owners, and a single-member LLC pays no corporate tax itself, though it files Form 5472 every year. If investors are coming, form a C-Corp: 21% federal and 7.5% Connecticut tax, with dividends to non-residents withheld at 30% before treaties. The S-corporation election is closed to you, because the IRS does not allow non-resident alien shareholders.

A C-Corp pays 21% federal tax and Connecticut's 7.5% corporation business tax, minimum $250. A single-member LLC pays no income tax itself: a non-resident individual owner pays federal tax on effectively connected income at graduated rates and Connecticut tax on Connecticut-source income at 2% to 6.99%. A multi-member LLC withholds on its foreign members' share of that income - 37%, or 21% for corporate members - and falls under the state's 6.99% pass-through entity tax law, whose current application we confirm case by case. Sales in Connecticut carry 6.35% on most goods and 1% on computer and data processing services.

The state part is quick. Most Business.CT.gov filings are accepted automatically, which is why Connecticut calls its $50 expedite unnecessary; paper sent by mail takes much longer, so we file online. The EIN sets the pace: by fax the IRS generally issues it within 4 business days, by mail in about 4 weeks. Banking starts once the EIN is in hand.

That is the job of the $4,400 package. We choose the route for your file - a Mercury- or Relay-class fintech platform opened remotely, or a traditional bank where you have a US footprint - prepare the application, then set up ACH, wires and Stripe onboarding. The bank decides every application. What we control is a clean file: the certificate, the EIN and the operating agreement.

For at least one member or manager, yes. Connecticut requires the name, business address and residence address of at least one member or manager in the Certificate of Organization and again in every annual report (§§ 34-247 and 34-247k). The registered agent's address does not replace it. Changing the named person later is a $20 interim notice. We settle whose details go in before anything is filed.

If one foreign person owns the LLC, yes. The IRS treats a foreign-owned single-member LLC as a corporation for this purpose: every year it files a pro forma Form 1120 with Form 5472 attached, reporting dealings with its owner, money put in or taken out included. It is due with the 1120, generally by the 15th day of the fourth month after the tax year ends, and it cannot be filed electronically - fax or mail only. Missing it costs $25,000, plus $25,000 for each further 30 days once 90 days have passed after an IRS notice.

No. FinCEN's final rule, effective 14 August 2026, exempts companies formed in the US, so a Connecticut LLC or C-Corp files no BOI report even if every owner is foreign. Reporting now covers only entities formed under a foreign country's law that register to do business in a US state. The rule moved twice in 2025 and 2026, so it stays on your compliance calendar.

Because of where the business will run. An out-of-state LLC that registers in Connecticut files a $120 foreign registration, keeps a Connecticut registered agent and files the Connecticut annual report on top of its home state's filings. If your office or staff are here, forming in Connecticut skips that second layer. If nothing ties you to the state, our Delaware and Wyoming pages are the better place to start.