The Phone Calls of a US Company Setup From Abroad: A Call-by-Call Roadmap

Setting up a US company from abroad requires exactly one mandatory phone call: the EIN call to the IRS at +1 267-941-1099. Everything else in the process — formation, the registered agent, most banking, Stripe — either happens entirely online or involves someone calling you, which is a different problem with a different fix. This guide is the call-by-call roadmap: who calls whom at each stage, the verified numbers, how long each call runs, and what it costs from outside the US.

We wrote it because our own call logs demanded it: the IRS international EIN line is one of the most-dialed numbers on BubblyPhone — 148 calls from just four users in one stretch, all foreign founders working through exactly this checklist. Formation guides cover the paperwork in exhaustive detail and then wave vaguely at “call the IRS” — some still tell you to use Skype, which shut down in May 2025. Here's the phone side, done properly. (Where the process touches tax or legal decisions, this is orientation, not advice — a cross-border accountant earns their fee here.)

Which Phone Calls Does a US Company Setup Actually Require?

One outbound call is unavoidable — the EIN — and every other step is either fully online or about being reachable. That surprises most founders, so here is the whole setup as a call ledger:

The honest summary: the phone matters far less for what you dial than for what dials you. But the one call you do make is a genuinely important one — it's the only way a founder without an SSN or ITIN gets an EIN quickly, and nothing downstream (bank, Stripe, contracts) moves without the EIN.

The EIN Call: The One You Can't Avoid

International applicants get their EIN by calling +1 267-941-1099, Monday to Friday, 6 a.m. to 11 p.m. US Eastern time — not toll-free, with a completed Form SS-4 in front of you. The interview itself takes 15–20 minutes, total time with hold is usually 30–60, and the agent issues the EIN before you hang up. Midweek near the 6 a.m. ET opening is the quietest window. The EIN itself is free; the IRS never charges for one.

Two traps catch founders here. First, the number US websites cite — 800-829-4933, the IRS business line — is toll-free, and US toll-free numbers are generally unreachable from foreign phones (our 1-800-from-abroad guide covers why). Second, the online EIN tool locks out anyone whose responsible party has no SSN or ITIN — the phone route isn't a backup for you, it's the main road.

We've covered this call line-by-line — SS-4 walkthrough, who qualifies, phone vs fax vs mail — in the dedicated EIN-by-phone guide. For everything else IRS — account questions, letters, ITIN issues — the IRS-from-abroad guide has the international line, hours and best call windows by time zone.

When Do You Actually Need to Call Delaware or Wyoming?

Usually never — formation, annual reports and franchise tax are all handled online, and no state calls you to welcome your LLC. The state phone lines earn their place on this roadmap for the exceptions: a franchise-tax notice that doesn't match what you paid, a filing stuck in processing, a registered agent that resigned, a company name showing the wrong status. Both numbers are ordinary geographic +1 lines, so unlike the IRS 800 numbers they're dialable from anywhere — verified on the states' own sites in August 2026:

The dates that generate these calls, so you can put them in your calendar instead: Delaware LLCs owe a flat $300 annual tax by June 1(miss it and it's a $200 penalty plus 1.5% monthly interest); Delaware corporations file their annual report and franchise tax by March 1. Wyoming entities file an annual report with a minimum $60 license tax on the first day of their anniversary month. All of it is payable online in minutes — the frantic franchise-tax phone call is almost always someone who found out about the deadline from a scary-looking notice their registered agent forwarded.

On that note, the registered-agent reality check: your agent is a mail-receiving service with a street address, not a hotline. You'll almost never call them, and they'll almost never call you — the relationship runs on email scans of whatever the state (or, rarely, a process server) delivers. If your agent does call, answer: that's usually service of process or a compliance deadline, the two things you least want to miss.

The Bank Account Step: Who Verifies by Phone, Honestly

Mostly nobody. The fintech business accounts foreign founders actually use — Mercury, Wise Business, Relay and similar — verify remotely with documents: your EIN letter, passport, formation papers, sometimes a short video check or follow-up questions by email. There is no scheduled verification call to pass, and claiming otherwise is how formation-agent blogs pad their checklists. What these platforms do need is a phone number that reliably receives SMS codes, because your login and many approvals run on text-message 2FA from day one.

Traditional US banks are the other story: most still want a branch visit to open a business account, which is why remote founders end up at fintechs in the first place. The ones that do onboard remotely verify the old way — a compliance officer calls the number on your application, sometimes without an appointment. That call going unanswered is one of the quiet ways foreign-founder applications die. The fix isn't a calling trick, it's the number itself: put a US number on the application that rings wherever you are (details in our US-number-for-your-LLC guide).

Why Most of It Is About Receiving Calls, Not Making Them

Look back at the roadmap: after the EIN call, the direction of every phone interaction flips. The bank calls you. The IRS queue callback — the option that saves you an hour of hold — only dials US numbers. Stripe texts you verification codes and, when you open a support case from the dashboard, calls you back (there's no inbound Stripe number to dial — and for Stripe specifically, the US number matters far more for SMS and 2FA than for any voice call). Every application form from the bank to the payment processor has a phone field, and what you put in it determines whether “we tried to reach you” ends your application or not.

That's a different product than the dialer this guide runs on: it's a dedicated US number of your own that rings in your browser or app wherever you live — $3 one-time, then $3/month on BubblyPhone, no SSN or US address needed. We've written up the two versions of that story separately: the general case in US phone number for your LLC and the Atlas-specific one in US phone number for your Stripe Atlas company. This page stays on the outbound side: the calls you place.

What Each Call Costs From Abroad

Every number on this roadmap is a US destination, so from BubblyPhone's browser dialer they all bill at our flat US rate of $0.025/min (full list on the rates page) — and the IRS toll-free lines, useless from a foreign SIM, become free:

Add it up: the entire phone side of forming and running a US company for a year — EIN call, one tax-season IRS call, one confused-about-a-notice state call — comes to roughly $2.50 in call charges. The same three calls on mobile roaming commonly cost more than the Wyoming annual report. One practical note: IRS and state phone trees run on touch-tones, and a proper dialer sends them reliably — a known failure point of bargain calling apps that connect the call but can't press 3.

The Full Timeline: Formation to First Franchise Tax

The whole first year of phone logistics on one table — who calls whom, when, and what to expect:

State numbers and hours verified on corp.delaware.gov and sos.wyo.gov in August 2026; IRS numbers and hours verified on irs.gov the same month. Deadlines shown are the states' standard ones — filing obligations vary by entity type and situation, so confirm yours with a professional rather than a phone-logistics guide.

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