When to Call the IRS, and Which Number to Use

Every article about calling the IRS says the same thing. Call early. The advice traces back to a study from 2021, gets repeated without checking, and one of the pages still ranking for it went up in 1998, which tells you roughly how much fresh thinking has gone into the question.

Here's the part that advice skips. The IRS runs several different phone lines, they keep different hours, and picking the wrong one costs you the whole call. The main line closes at 7pm your local time. The line for people outside the US runs until 11pm Eastern. If you need an in-person appointment, neither of those is the number you want.

So the useful question isn't what time to call. It's which number, then what time.

The IRS lines that matter

Each of these is published by the IRS. We keep a checked list of organisation phone numbers, and these are the IRS entries in it as of August 2026.

Two of those are worth a closer look, because they're the ones people miss.

The international line runs four hours longer

The IRS publishes +1 267 941 1000 for taxpayers outside the United States. It's a Philadelphia number. It is deliberately not toll-free.

That last detail is the whole point, and it catches people out constantly, because a toll-free number like 1-800-829-1040 is a domestic arrangement in which the organisation agrees to pay for calls arriving from inside its own country, and that agreement almost always stops at the border. So you dial it from Berlin or Bangkok and nothing happens. No message. No explanation. We covered the other reasons calls fail separately, but on government lines this is nearly always the one.

The 267 number is reachable from anywhere. And it's open 6am to 11pm Eastern, a four-hour longer day than the domestic line's 7am to 7pm.

That extra window matters more than any "call early" tip, because it decides whether the call is possible at all. In Europe, 11pm Eastern is four or five in the morning, so your realistic slot is the Eastern morning. In Asia or Australia it works the other way round, and the late Eastern evening lands in your morning, which is the only civilised option you get.

If you need a person in a room

Some things can't be sorted out on the phone. Identity verification. ITIN document review. Anything where somebody at the IRS has to physically look at an original document you're holding.

For that you need a Taxpayer Assistance Center, and TACs work by appointment. The number is +1 844 545 5640, open 7am to 7pm local time, Monday to Friday. Calling the main line to book one wastes a queue.

What the timing advice is actually worth

"Call early" is repeated everywhere, and it isn't wrong. Lines open at 7am local and the queue builds through the morning, so the first hour really is quieter.

But be honest about what it is. It's a rule of thumb, not a measurement, and since the IRS doesn't publish hold times by hour, nobody writing one of these articles actually knows the answer with any precision, ourselves included. Anyone handing you a confident best-minute-to-dial is guessing.

What you can control is duller, and works better:

• Call the right line. Getting through to the wrong department and being transferred costs more than any hour-of-day advantage.
• Avoid Mondays and the day after a holiday. That's when the backlog lands.
• Have your details ready before you dial: Social Security number or ITIN, filing status, the return in question, and any notice you received with its number.
• Check the online tools first. Refund status, transcripts and payment plans are all self-service. If your question is one of those, the fastest call is the one you don't make.

Calling the IRS from another country

If you're an American abroad, you get both problems at once: the number on the website may not connect, and the call itself is long.

Three things help.

Use the 267 number. Not the 1-800 one. That's the whole trick, and it's published by the IRS precisely for this.

Work out the overlap before you dial. 6am to 11pm Eastern is a wide window, but it's still someone else's working day. If you'd rather not compute it by hand, our call time planner does it for you.

Don't do it on roaming. A call to the IRS is mostly hold music, and paying international roaming rates to listen to a recorded voice telling you your call is important is a genuinely miserable way to spend money. Calling over the internet costs the same wherever you happen to be standing, because the price follows the destination rather than your location. CallTuv runs in a browser at $0.03 a minute to US numbers. An hour on hold is under two dollars.

One practical note for any government line: wait until the call actually connects before you touch the keypad. Presses sent while it's still ringing go nowhere, and menus stop listening between prompts, so take the options one digit at a time.

A word on the numbers you'll find elsewhere

Search around and you'll turn up "secret" IRS numbers with extensions, passed between forums and tax blogs, each promising a shortcut past the queue to a real human being.

Be careful with those. Some are just stale. But the bigger issue is that impersonating the IRS by phone is one of the most common fraud patterns in the country, with the FTC recording around $920 million lost to government impersonators in 2025, which means an unpublished number passed around a forum is a number nobody in a position to know has ever checked.

Every number in this article is one the IRS publishes itself. If you find another one somewhere, look for it on IRS.gov before you trust it with your tax details.

Where these came from

• Source: phone numbers published by the IRS, cross-checked against our own reviewed list of organisation numbers. Every entry above was confirmed against IRS.gov or USA.gov.
• Checked: August 2026. Agencies change published lines and hours, so check IRS.gov if one doesn't behave as described.
• What we did not do: measure hold times. We have no data on how long you'll wait at a given hour, and neither does anyone else writing about this. Where this article gives timing advice, it's reasoning from published opening hours, not measurement.
• Excluded on purpose: unofficial numbers and extension shortcuts circulating on forums. We could not confirm them on IRS.gov, so they're not here.
• Reuse is welcome with attribution and a link.

FAQ

What is the best time to call the IRS?
Early in the day. Lines open at 7am local time and the queue builds through the morning, so the first hour is quieter. Treat that as a rule of thumb rather than a measurement, since the IRS doesn't publish hold times by hour. Choosing the right line matters more than the exact minute.

What is the IRS phone number for individuals?
+1 800 829 1040, open 7am to 7pm local time, Monday to Friday.

What number do I call the IRS from outside the US?
+1 267 941 1000, the international taxpayer line, open 6am to 11pm Eastern, Monday to Friday. It isn't toll-free, which is exactly why it works from abroad. There's a second line on +1 267 941 1099.

Why won't the 1-800 IRS number work from another country?
Toll-free numbers are funded by the organisation for calls placed inside its own country, and that arrangement usually ends at the border. Use the 267 number instead.

How do I book an in-person IRS appointment?
Call +1 844 545 5640, open 7am to 7pm local time, Monday to Friday. Taxpayer Assistance Centers see people by appointment only.

What number is the IRS business line?
+1 800 829 4933, the Business and Specialty Tax Line, open 7am to 7pm local time, Monday to Friday.

Are the "secret" IRS extension numbers safe to use?
Treat them with caution. They circulate on forums, they go out of date, and IRS impersonation is a major fraud category. If a number isn't published on IRS.gov, nobody has verified it.

What should I have ready before calling?
Your Social Security number or ITIN, your filing status, the tax return you're asking about, and any IRS notice you received including its number.

The bottom line

Calling early helps a little. Calling the right number helps far more.

And if you're outside the US, the number printed on the website is probably the one that won't work.

If you're in the US, that's +1 800 829 1040 for personal tax and +1 844 545 5640 to book an appointment. If you're abroad, it's +1 267 941 1000, and you get four extra hours a day that nobody tells you about.