A US phone number makes it easy for US clients to call you. It does not make you a US business, and you do not need it to. What a client needs to know is how working with you will go: when you answer, how fast you reply and what happens if they miss you. Here is how to say where you are on your site, profile and proposals, what to say on the first call, how to answer “where are you based?”, and which time-zone promises you can keep.
What does a US number say about you, and what doesn’t it?
| A US number tells a client | A US number does not tell them |
|---|---|
| They can call you as an ordinary call to a US number | That you live or work in the US |
| You have set up your work around US clients | That you have a US office or address |
| They can leave a voicemail if you miss them | That you are a US company |
| You will call back from a US number | That you can answer at any hour |
Keep the left column and say the right column out loud. “Based in Lisbon, working US mornings” is clear, honest and specific. A client who reads that knows exactly what to expect.
Why does saying it early help?
Because clients find out anyway. Your invoices carry your business address, your bank details show the country, your emails arrive at times that hint at your time zone, and a video call shows your room. If the first time a client learns where you are is on your first invoice, it can feel like something was kept back, even if you never said anything untrue.
Said early, your location is a practical detail, like your rates or your notice period. It also filters out clients who need someone in their office, before either side has spent time on a proposal.
Where should you say where you are?
Use the same short line everywhere: your city and country, your hours in a US time zone, and how to reach you. Made-up examples, using a number from the 555-01xx range set aside for fiction:
| Where | What to write | Example |
|---|---|---|
| Website contact page | City, country, US-time hours, phone and email | “Based in Lisbon, Portugal. US line: +1 212 555 0123. Calls Monday to Thursday, 9 a.m. to noon Eastern.” |
| About page | One plain sentence | “I work from Lisbon with clients in New York, Chicago and California.” |
| Profile headline or bio | Location and who you serve | “Product designer in Lisbon, working with US startups on Eastern time.” |
| Proposals | A short “How we’ll work” section | “I’m based in Lisbon. Our overlap is 9 a.m. to noon Eastern, and I reply to email within one working day.” |
| Email signature | Name, city, US line, hours | “Ana Costa, Lisbon. US: +1 212 555 0123 (9 a.m. to noon ET)” |
| Invoices | Your real legal name and address | Your business address in your country, as your local rules require |
| Voicemail greeting | Name, hours in Eastern or Pacific, call-back time | See our voicemail greeting scripts |
On a marketplace profile, keep your real country set. A phone number does not change where you live, and our guide to a US number for Upwork and Fiverr covers how that works. For number formatting on each of these, see how to write a US phone number.
What do you say on the first call?
Say it once, early, as part of how you work, and then move on to the client’s project. A made-up example:
“Thanks for making time. Before we get into the project, a quick bit on how I work: I’m based in Lisbon, so I’m five hours ahead of you. I keep 9 to noon your time free for calls Monday to Thursday, and I answer email within a working day. If you call outside that, leave a voicemail and I’ll call you back in my next window. Does that fit how your team works?”
That covers where you are, your overlap, your response time and what happens when you miss a call. The question at the end invites the client to raise any concern now, not three weeks into the project.
How do you answer “where are you based?”
In one sentence, then back to the work. Some answers you can adapt:
| The client asks | An honest answer |
|---|---|
| “Where are you based?” | “In Lisbon, Portugal. I work US mornings, 9 to noon Eastern.” |
| “Oh, I thought you were in New York.” | “I can see why, it’s a New York number. I’m in Lisbon; the number is so US clients can call me easily.” |
| “Is the time difference a problem?” | “We overlap three hours a day, which covers calls. The rest of the day I’m working on your project, so you often wake up to progress.” |
| “Can we meet in person?” | “Not easily, I’m in Lisbon. I’m happy to do video calls, and I can plan a visit for a longer project.” |
| “Do you have a US company?” | “No, my business is registered in Portugal. Invoices come from there, and I can take payment in dollars.” |
Adjust each line to what is true for you. If you do have a US company, say so; if you do not, do not let a client assume it.
Which time-zone promises can you keep?
A promise you keep every week builds more trust than a generous one you keep most weeks.
| Promise | Keep it if |
|---|---|
| “Calls 9 a.m. to noon Eastern, Monday to Thursday” | Those hours fall inside your normal day, all year |
| “I call back within one working day” | You check voicemail at the start of every working day |
| “Same-day email replies” | Your day overlaps theirs enough to reply before they log off |
| “Available 24/7” | Never, unless someone really answers at night |
| “Calls any time in US business hours” | Only if you work their whole day, from 9 a.m. Eastern to 5 p.m. Pacific |
Check your promise against the year, not just this week. US and European clocks change on different dates, so for a few weeks each spring and autumn your overlap moves by an hour; see the weeks the US and Europe change clocks. US holidays matter too: our list of US federal holidays for 2027 shows the days your clients are likely away. For the overlap from your country, see the best time to call US clients, or the guides for India, Pakistan and Nigeria.
What should you avoid saying?
- “Our New York office.” If you do not have one, do not imply it, even through an address on your site.
- “Local” or “US-based”. Say “working US hours” instead. It is true and it is what the client cares about.
- A US mailing address presented as an office. A mail-forwarding address is a place for post, not a place you work.
- “Call or text me.” The TripoSIM number receives texts but cannot send them. Say “call or email”.
- Hours in your own time zone only. “2 to 5 p.m.” means nothing to a client in Denver. Give the US zone.
- Silence about your location when asked. A vague answer to a direct question costs more trust than the answer would have.
How does the TripoSIM number fit?
The TripoSIM US Virtual Number gives you a +1 number with an area code you choose, in an app on iPhone or Android over Wi-Fi or mobile data. Clients call it like any US number, and calls to you are included with a fair use of 300 minutes a month. When you miss a call, voicemail takes messages up to 2 minutes, up to 30 a month, kept 30 days. When you call back, 300 outgoing minutes a month to US and Canadian numbers are included.
Know its limits before you describe it to a client:
- No sending texts. It receives texts only, so point clients to email for anything written.
- Calls out to the US and Canada only. Keep your local number for local calls.
- No 911. It cannot call 911 or any emergency service, so keep your local number for emergencies.
- Needs internet. If your connection drops, callers reach voicemail, so give email as the backup.
The business contact checklist shows how to list the number with your hours, and the area code guide helps you choose one your clients recognize.
The bottom line
A US number makes you easy to call. Your honesty about where you are is what makes you easy to trust. Put your city, country and US-time hours together on your site, profile and proposals, say it once on the first call, answer “where are you based?” in a sentence, and promise only the hours you can keep all year. For more on using a US number to win work, read how a US number helps you win US clients, and compare the plans, $100 a year or $12.99 a month, on the plans page.