What to have ready before an IRS phone call (and how to spot a scam)

By JT Williamson, editor

Educational information only, not tax, legal, or financial advice. We are not a CPA, enrolled agent, attorney, or the IRS. Talk to your own tax professional about your situation.

Short answer: Before you dial, gather the identity details the IRS says its phone assistors need—Social Security numbers and birth dates for people named on the return, your filing status, the prior-year return, the return you are calling about, and any IRS letters or notices you received (IRS: be ready to verify your identity; IRS: let us help you). The IRS normally contacts you first by mail, and a phone call, email, or text that is unexpected, rushes you, threatens you, asks for personal or financial information, or demands payment now is not from the IRS (IRS: how to know it's the IRS). If a call feels wrong, hang up and use only numbers printed on your own notice or pages you open yourself on IRS.gov—this guide does not list phone numbers.

This page is for someone who needs to talk with the IRS about a notice or balance, or who got a call from someone claiming to be the IRS and wants a calm prep list. It is not the full balance-due response checklist—that lives on responding to an IRS balance-due notice—and it is not a document packet for a tax professional (documents to bring when talking with a tax pro). It is education only, not tax, legal or financial advice, and Honest Tax Relief cannot speak to the IRS for you or change what your notice says.

What to have ready before you dial

The IRS says its representatives must verify your identity before discussing your personal information, and that having the right papers ready helps you avoid calling back (IRS: let us help you; IRS: be ready to verify your identity). Put these on one sheet next to the notice:

• Social Security numbers and birth dates for those named on the tax return (or an Individual Taxpayer Identification Number letter if you have one)
• Your filing status
• The prior-year tax return
• A copy of the tax return you are calling about
• Any IRS letters or notices you received, with the CP or LTR number from the right corner of the letter (IRS: understanding your notice or letter)
• Tax year(s) under discussion, amounts shown, and every printed deadline copied from the letter itself
• Three process questions you want answered, plus a blank space for what you are told

Build that sheet from the year folders described in organizing tax records by year. If you need the official account picture behind the letter, see what an IRS account transcript can tell you. Review the notice carefully and keep it for your records; if it asks you to respond, act by the due date (IRS: understanding your notice or letter).

Two timing notes from the IRS help page: wait times are shorter Wednesday through Friday, and during periods of high call volume you may be offered a return call once a representative is available instead of waiting on hold. The IRS says that option is available on most toll-free topics and may be offered when wait times exceed 15 minutes (IRS: let us help you). That return call is one you chose during a call you placed yourself. A call you never asked for is a different thing, so use the scam checks below.

What the IRS may ask you to verify

When you call, the IRS page on verifying identity lists the same core items: Social Security numbers and birth dates for people named on the return, filing status, the prior-year tax return, the return in question, and any IRS letters or notices (IRS: be ready to verify your identity). The “let us help you” page adds that third parties calling for someone else need the taxpayer’s name and SSN or ITIN, the return they are calling about, and verbal or written authorization such as Form 8821 or Form 2848 (IRS: let us help you). Form 2848 is how you authorize an individual to represent you before the IRS (IRS: about Form 2848).

Publication 1 explains that taxpayers have the right to retain an authorized representative of their choice and to seek help from a Low Income Taxpayer Clinic if they cannot afford representation (IRS Publication 1). Nothing on this page is a script that forces an outcome.

If someone calls claiming to be the IRS

The IRS or private collection agencies may call you to address account matters. The IRS says it never calls to demand payment now, threaten arrest, or inform you of a refund (IRS: report fake IRS emails and messages). A phone call, email, or text message is not from the IRS if it is unexpected, rushes you, threatens you, asks for personal or financial information, or demands payment now (IRS: how to know it's the IRS). A social media direct message is never from the IRS.

Other official warning signs:

• The IRS normally contacts you the first time by mail delivered by the U.S. Postal Service (IRS: how to know it's the IRS). A letter or notice is the first way the IRS will contact a taxpayer (IRS: ways to tell if the IRS is reaching out).
• The IRS does not leave urgent or threatening messages. Scammers may falsely say a warrant will be issued for your arrest if you do not call back (IRS: ways to tell).
• The IRS and its authorized private collection agencies will never ask you to pay using any form of pre-paid card, store or online gift card. Review legitimate payment options on the IRS payments page (IRS.gov/payments; IRS: ways to tell).
• Impersonators want you to pay “now or else,” threaten arrest or deportation, and do not let you question or appeal the amount (IRS: recognize tax scams and fraud).
• Caller ID doesn’t prove it’s the IRS. The IRS warns that criminals can fake, or “spoof,” caller ID numbers to appear to be anywhere in the country, and can even spoof an IRS office phone number or the numbers of local, state, federal or tribal government agencies. So an IRS name or number on your screen is not proof the call is real. If you owe tax or think you do, the IRS suggests viewing your tax account information online at IRS.gov to see the actual amount owed (IRS: tips to recognize tax scams).
• If you get a suspicious IRS-related call, the IRS says to record the number and hang up, then report it through the reporting path on the IRS report-fraud pages you open yourself—we do not copy phone numbers here (IRS: report fake IRS messages).

Private collection agencies contracted by the IRS may call about certain outstanding inactive tax debts, but only after you and your representative have received written notice (IRS: ways to tell). Before a private collection agency contacts you, the IRS says you will receive two letters: Notice CP40 from the IRS, then the agency’s initial contact letter. Both letters contain a taxpayer authentication number used to confirm identity and to verify that the caller is legitimate (IRS: private debt collection). Keep that number with the letters; do not invent one from a voicemail alone.

Why would a private debt collector contact you about IRS taxes, and what can it do?

Because the law requires the IRS to hand certain overdue tax accounts to private collection agencies. Since September 23, 2021, the agencies under contract are CBE Group, Coast Professional and ConServe, and the IRS says your account may be assigned when it lacked the resources to work it or couldn’t locate you, when a year has passed without you or your representative interacting with the IRS on the account, or when more than 2 years have passed since the tax was assessed and the account wasn’t assigned for collection (IRS: private debt collection FAQs). A private agency can set up a payment plan with you, but it can’t levy, file a lien or take any other enforcement action. The IRS still can.

The IRS says it would not assign an account to a private agency if the taxpayer is:

• deceased, under 18, or in a designated combat zone;
• a victim of tax-related identity theft;
• receiving supplemental security income (SSI) or social security disability insurance (SSDI), or has adjusted gross income no higher than 200% of the applicable poverty level;
• under examination, litigation, criminal investigation or levy;
• in a pending or active offer in compromise, an installment agreement, a case with a right of appeal, or an innocent spouse case;
• in a presidentially declared disaster area and asking for relief from collection (IRS: private debt collection FAQs).

According to the same IRS page, an assigned agency will send its own letter before it tries to collect, identify itself as an IRS contractor, and can set up and monitor a payment arrangement that pays the balance in full within seven years or by the collection expiration date. It will not ask you to pay it directly or with prepaid debit, iTunes or gift cards, collect financial information, issue a levy or Notice of Federal Tax Lien, decide offers in compromise or mark an account currently not collectible, or charge a fee to set up a payment agreement. Every payment goes to the IRS: IRS Direct Pay, EFTPS, a card through a payment processor (for a fee), or a check or money order made payable to the United States Treasury. If you don’t want to work with the agency, the IRS says you must tell the agency so in writing (IRS: private debt collection FAQs).

To check that an assignment is real, compare the agency named on your Notice CP40 with the IRS list (IRS: understanding your CP40 notice), or pull your account transcript: the IRS says it will show transaction code 971 with the explanation “Collection referred to a private debt collection agency” (IRS: private debt collection FAQs; see what an IRS account transcript can tell you). Our suggestion: if a caller who says they’re a private collector asks to be paid directly, wants a gift card, or can’t match the taxpayer authentication number on your letters, treat it as a scam (see the caller ID warning above). If the agency is real, compare its payment plan with your other options in Offer in Compromise vs installment agreement before you agree to a monthly amount.

If a letter does not appear in the IRS notice search or looks suspicious, follow the contact path on the IRS notice page before you respond (IRS: understanding your notice or letter). Collections-toned language deserves a careful read first: IRS collection notices: what they usually mean.

A call-prep checklist (our suggested order)

These steps are our suggested order. Each IRS rule links to the page it comes from.

1. Confirm you are in a real process. Prefer numbers printed on your notice or pages you open on IRS.gov. Do not return a random callback from a voicemail alone. Hang up if the caller rushes payment, threatens arrest, or asks for gift cards (IRS: how to know it's the IRS; IRS: ways to tell).
2. Build the one-page call sheet with the identity items the IRS lists plus notice number, tax years, amounts, deadlines, and three questions (IRS: verify your identity).
3. Look up the CP or LTR number on IRS.gov before you dial (IRS: notice search).
4. During the call, write date, time, and any reference information they provide. Repeat back years and amounts. If you do not know an answer, say you will check your records—do not invent. Ask how to get written confirmation of anything that changes a deadline. (Capture habits are our suggestion.)
5. Stop when your three questions are answered or you have a clear written next step. Avoid opening with payment-plan vs settlement debates until the year facts are clear; when that comparison is relevant later, use Offer in Compromise vs installment agreement as education, not as a phone script.
6. After the call, spend ten minutes closing out: update the year cover sheet, calendar any new date, file the call sheet, and list missing proofs. If a deadline is tight, see asking for more time on an IRS notice. If a plan payment was missed, see what happens after a missed tax payment. If your ability to pay may come up next, refresh the snapshot in how to build a realistic tax-debt budget.

A call-prep sheet you can fill in

We made a blank worksheet with one row per prep item: download the IRS call prep sheet (CSV). It opens in Excel, Google Sheets or Numbers. The columns are the item, where you checked it (your notice, IRS.gov page, or year folder), and your notes. It is an educational worksheet only—not an IRS form—and you should not mail it to the IRS.

Example (made up, for illustration only): Someone has a CP14 for tax year 2023 and plans to call using the number printed on that notice. Their prep sheet rows read: “SSN and birth date for self — ready,” “filing status — married filing jointly on the 2023 return,” “notice number CP14 / notice date copied,” “three questions: which year, tax vs additions, how to get written confirmation of any new date,” and “scam check: caller did not ask for a gift card; I dialed the notice number myself.” This is not a real case, and your notice’s own dates and wording are the ones that count.

When not to force the call today

• You cannot find the notice and are guessing the year
• Multiple years are blended in one unlabeled stack (split first: sorting notices across multiple tax years)
• You are exhausted and likely to agree to something you do not understand
• Someone is pressuring you to “just pay anything now” without written terms, gift cards, or cryptocurrency—hang up and verify through IRS.gov (IRS: how to know it's the IRS)

Waiting a day to organize is different from ignoring a printed deadline. Know which one you are doing. For lien or levy language on a letter, read tax lien vs levy before you dial.

When to open a related guide

• Full response checklist for a balance-due letter: responding to an IRS balance-due notice.
• Paper packet for a meeting: documents to bring when talking with a tax professional.
• Account picture behind the letter: IRS account transcripts.
• What a collections letter usually signals: IRS collection notices.
• Need more calendar room on a reply date: asking for more time on an IRS notice.
• Missed an installment payment: what happens after a missed IRS payment.
• Lien vs levy wording: IRS tax lien vs levy.
• Self-employed, with business and personal records mixed: self-employed tax debt: what to do first.
• Payment plan vs offer education: Offer in Compromise vs installment agreement.
• Bigger picture of notices and tax debt: the tax debt guide.

Questions to answer before you dial

• Am I calling a number printed on my notice, or returning a surprise callback?
• Do I have the identity items the IRS lists ready on the desk?
• What is the exact CP or LTR number, and did I look it up on IRS.gov?
• What three process questions do I want answered today?
• Did the caller ask for gift cards, crypto, or immediate payment under threat? If yes, hang up.
• If a private collection agency is involved, do I have CP40 and the matching taxpayer authentication number?
• Should someone else speak for me under Form 2848 instead?

Next step: finish the call sheet before you invent a story

Write the notice number, years, and identity items onto the prep sheet today, then decide whether you are dialing a printed notice number or hanging up on a suspicious call. If you still need a step-by-step reply plan, use the balance-due response checklist. To pull paperwork together, see documents to bring when talking with a tax professional. For the bigger picture, see the tax debt guide. If you want to talk it through after that, you can contact us; please do not send your full Social Security number or bank details in the message. For an overview of common tax-resolution topics, see how we help.

How this page is made

JT Williamson checked every IRS rule on this page against the IRS.gov pages and PDFs linked next to it on October 8, 2026, and re-checked them on October 11, October 13, October 15 and October 16, 2026: the be-ready-to-verify-your-identity page; how to know it's the IRS; ways to tell if the IRS is reaching out; the notice and letter page; let us help you; report fake IRS messages; tax scams / consumer alerts; the payments page; private debt collection; Form 2848; and Publication 1. The caller ID spoofing note comes from the IRS page “Tips to help taxpayers recognize tax scams,” checked on October 22, 2026. The private debt collector section comes from the IRS pages “Private debt collection” (last reviewed August 21, 2026), “Private debt collection FAQs” (last reviewed July 23, 2026) and “Understanding your CP40 notice” (last reviewed June 25, 2026), all checked on October 27, 2026; the closing suggestion is our own. The call-prep order, the “calm next step” column, the prep sheet and the example are our own suggestions and are labeled that way. We do not list IRS phone numbers here, because the right ones are printed on your notice or on IRS.gov pages you open yourself. Nothing here describes a real person's case.

Keep reading: Documents to bring when talking with a tax professional · Can you ask for more time to respond to an IRS notice? · IRS notices and tax debt: a plain-English guide

Educational information only. Not IRS, legal, or accounting advice. No outcome is guaranteed.