IRS letters and audits abroad

A CP2000 isn't a bill or an audit — it's an automated notice flagging a mismatch between your return and income data the IRS received from third parties (employers, banks, foreign financial institutions under FATCA), and you need to respond by the deadline whether you agree or disagree. Compare the notice's figures against your own records first: if the IRS is right, sign the response form and pay or set up a payment plan; if it's wrong (a common cause for expats is foreign income or a Foreign Tax Credit the IRS's automated matching didn't account for), write a clear response explaining why, with supporting documents attached. Taxpayers with a foreign address get 60 days to respond instead of the standard 30 — see the full IRS letter response guide for exactly how to reply and where to send it.

Yes — living abroad doesn't exempt you from IRS audits, and in some respects it increases scrutiny, since foreign accounts, foreign income, and FEIE or Foreign Tax Credit claims are all areas the IRS has stepped up review on using FATCA data from foreign banks. Most expat audits are conducted entirely by mail (a "correspondence audit") rather than in person, which makes sense logistically given the distance, but that doesn't make them less serious — the IRS can still assess additional tax, penalties, and interest based on the outcome. See which factors put expats specifically at higher audit risk so you know what to double-check before you file.

Start with the notice or letter number in the top right corner — it tells you exactly what the IRS wants and your deadline — then respond using an IRS-designated private delivery service so you have proof of when it was sent, since regular international mail can take weeks and the deadline runs from the notice date, not from when it reaches you. Many notices allow a longer response window for taxpayers with a foreign address (60 days instead of 30 for a CP2000, for example, or 150 days instead of 90 for a formal Notice of Deficiency), which helps but doesn't eliminate the mail-delay risk — checking your IRS Online Account periodically catches notices faster than waiting for a paper copy to arrive. The full IRS letter response guide covers the correct mailing addresses and delivery services to use from abroad.

Yes — an IRS installment agreement, requested via Form 9465, lets you pay a tax balance you can't cover in full over monthly payments instead of all at once, and it's available to Americans abroad on the same terms as domestic taxpayers. Balances under $50,000 generally qualify for streamlined approval as long as you can pay it off within 72 months and are current on all required filings. The cheapest option is a Direct Debit Installment Agreement (a $22 online setup fee versus $69–$178 for other methods), which requires the IRS to pull payments automatically from a US bank account — worth keeping one open specifically for this if you're setting up a plan from overseas. See the full Form 9465 guide for eligibility and how to apply.

Certified mail creates a legally documented proof of the exact date a notice was sent, which matters for time-sensitive notices like a Notice of Deficiency — the IRS is required to prove when that clock started, since it determines your deadline to petition Tax Court before the IRS can assess the tax. Not every IRS letter is certified — routine notices like a CP2000 usually aren't — so certified mail is generally a signal that the notice carries legal deadlines or collection consequences worth taking seriously. It's also a useful scam check in the other direction: genuine IRS correspondence always references a verifiable CP or LTR number and never demands payment by gift card or cryptocurrency, unlike the fake IRS notices increasingly targeting expats.

Always by mail — the IRS opens every audit with a written letter through the US Postal Service, never by phone call, text message, email, or social media, and it never demands immediate payment as the first step of contact. The notice will specify whether it's a correspondence audit (handled entirely by mail, the most common type for expats) or requires an in-person or virtual interview, along with exactly which items on your return are being examined and what documentation to provide. Any unexpected call or email claiming to be the IRS announcing an audit should be treated as a scam attempt until verified independently through your IRS Online Account.

There's no fixed timeline — a straightforward correspondence audit can sometimes wrap up in a few months, but the entire process, including any back-and-forth over documentation or disputed items, can easily stretch well beyond that. Correspondence audits, which are how most expat audits are conducted given the practical difficulty of an in-person interview overseas, tend to run longer than other audit types simply because everything moves through the mail rather than a meeting. Responding promptly and completely to each document request is the biggest factor within your control for keeping an expat audit from dragging out longer than it needs to.

The standard window is three years from your filing or due date, whichever is later, but it extends to six years if you omitted more than 25% of your gross income or more than $5,000 of income tied to specified foreign financial assets — and there's no time limit at all if you never filed, committed fraud, or left a required international information return (like Form 8938) off your filing. That last exception is a real trap for expats: a missing Form 8938 can keep your entire return open to audit indefinitely, not just the specific asset that should have been reported, since the assessment period generally doesn't start running until the IRS actually receives that information. See the full breakdown of the 3-year, 6-year, and indefinite rules to see which applies to your filing history.

No return is audit-proof, but expats can meaningfully lower their risk by reporting worldwide income completely, documenting the physical presence or bona fide residence supporting any FEIE claim, and avoiding suspiciously round numbers on business expenses or deductions. Filing consistently from year to year, disclosing every foreign account and cryptocurrency transaction (exchanges now report these directly to the IRS via Form 1099-DA), and keeping records of large charitable donations are the specific habits that separate a low-risk return from a flagged one. See the full list of the top audit triggers for expats to check your own return against them before filing.