An IRS Taxpayer Assistance Center is a local, in-person IRS office that handles a narrow set of tasks you generally can’t finish online or by phone: identity verification, ITIN applications, cash payments, installment agreement setup, and questions about specific IRS notices or your account. There are more than 360 of them nationwide, nearly all run by appointment only, and you book by calling 844-545-5640.
What a Taxpayer Assistance Center Handles
TACs are problem-solving offices, not tax prep shops. The staff sticks to a defined menu of services:
- Identity verification after certain IRS letters
- ITIN applications, including on-the-spot review of original identity documents
- Cash payments toward a tax balance
- Setting up or revising an installment agreement
- Explaining an IRS notice and what to do about it
- Account questions, including balance, payment history, and transcript requests
A few of these have wrinkles worth knowing before you book.
Identity Verification
A TAC visit is usually the fallback, not the first step. Read the letter you received. A CP5071 series notice generally offers online verification first, which is faster than an appointment.1Internal Revenue Service. Understanding Your CP5071 Series Notice Letter 4883C directs you to call the Taxpayer Protection Program hotline printed on the letter; in-person verification only comes into play if phone verification fails.2Internal Revenue Service. Understanding Your Letter 4883C Letter 5747C is the one that actually requires an in-person appointment.3Internal Revenue Service. Understanding Your Letter 5747C
ITIN Applications
A TAC is one of the easiest places to apply for an Individual Taxpayer Identification Number because staff act as Certifying Acceptance Agents and can verify your original documents at the counter.4USAGov. Get an Individual Taxpayer Identification Number (ITIN) to File Your Tax Return You keep your originals the same day. Applying by mail means sending documents like your passport to the IRS processing center and waiting for their return.
Cash Payments
TACs are one of the few places you can hand physical currency to the IRS. Expect the appointment to run one to two hours: staff escort you to a secure area, ask for payment details including the tax type and period, count the cash with you, and issue a receipt. If you plan to pay more than $10,000, the IRS will call ahead to confirm logistics.5Internal Revenue Service. What to Expect When You Pay Cash at an IRS Office For smaller amounts, a separate retail partner program at some convenience stores and pharmacies caps each transaction at $500 and doesn’t require an appointment.6Internal Revenue Service. Pay With Cash at a Retail Partner
Payment Plans
You can apply for an installment agreement at a TAC. In-person setup fees run $107 for a direct debit plan and $178 for a non-direct-debit plan. Low-income taxpayers may see the fee waived or reduced to $43, and that $43 may be reimbursed. Revising an existing plan in person costs $89, or $43 for low-income taxpayers.7Internal Revenue Service. Payment Plans; Installment Agreements Applying online is cheaper, so if your situation is straightforward, try the website before booking.
What a TAC Will Not Do
TACs do not prepare tax returns. Staff will not fill out your Form 1040, and they won’t advise you on tax planning. If you show up expecting full-service preparation, you’ll leave empty-handed.
For free return preparation, the IRS runs two separate programs. Volunteer Income Tax Assistance serves taxpayers earning roughly $69,000 or less, people with disabilities, and taxpayers with limited English proficiency. Tax Counseling for the Elderly focuses on taxpayers 60 and older, with attention to pension and retirement income questions. Both use IRS-certified volunteers at community sites and run during filing season, roughly January through mid-April. Find a VITA site through the VITA Locator Tool on the IRS website or by calling 800-906-9887; AARP Tax-Aide sites (part of TCE) are listed through the AARP Site Locator or by calling 888-227-7669.8Internal Revenue Service. Free Tax Return Preparation for Qualifying Taxpayers
Finding an Office and Booking an Appointment
Use the IRS Local Office Locator to find the nearest TAC by address, city, state, or ZIP code within a search radius.9Internal Revenue Service. IRS Local Office Locator The 360-plus offices are not evenly distributed, and in rural areas the closest location may still be a long drive. The number listed for a location is generally the central IRS line, not a direct desk phone.
Almost every TAC is appointment-only. Walk in without one and you’ll likely be turned away. Book by calling 844-545-5640. An IRS representative will ask about your issue and schedule a specific date and time so the right staff member is available when you arrive.10USAGov. Contact the IRS for Questions About Your Tax Return
Show up on time. Arriving more than 15 minutes late without checking in may cost you the appointment. If you’re sick, the IRS asks that you reschedule rather than come in.11Internal Revenue Service. Contact Your Local IRS Office
Saturday Hours
Select TACs open on certain Saturdays during the first half of the year, from 9 a.m. to 4 p.m. In 2026, the scheduled dates are February 28, March 28, April 11, April 25, May 30, and June 27. All routine services are available on those days except cash payments. Not every location participates on every date, and availability may change without notice.12Internal Revenue Service. IRS Face-to-Face Saturday Help
What to Bring
Every visit, regardless of reason, needs at minimum a government-issued photo ID (driver’s license, state ID, or passport), your Social Security card or ITIN documentation along with SSNs or ITINs for household members involved in the issue,13Internal Revenue Service. Dependents 9 and the original IRS notice or letter if one prompted your visit.
Beyond those basics, bring the paperwork that matches your situation:
- Identity verification after Letter 5747C: two forms of ID (one photo, one secondary such as a Social Security card, mortgage statement, utility bill matching the address on your ID, car title, voter registration card, or birth certificate), the referenced tax return, a prior-year return if you have one, and supporting documents like W-2s and 1099s.3Internal Revenue Service. Understanding Your Letter 5747C
- ITIN application: completed Form W-7, the tax return you’re filing it with, and original documents proving foreign status and identity. A valid passport satisfies both requirements in one document.
- Cash payment: the exact amount you plan to pay plus any payment voucher or notice showing your balance.
- Payment plan setup: your most recent return, the notice showing your balance, and income and expense information so staff can assess your ability to pay.
- Notice questions: the notice itself, the return for the tax year in question, and the supporting documents behind it.
Bring copies of everything. Staff may need to keep some paperwork, and you don’t want to hand over your only copy of a W-2 or an original notice.
What the Visit Itself Looks Like
Clear at least an hour on your schedule, and longer if you’re paying cash. You check in, wait to be called, and meet with the staff member assigned to your case. Because your issue was flagged during the scheduling call, you won’t need to explain from scratch why you’re there.
The interaction depends on the service. Identity verification is largely a document review: the staffer examines your IDs and tax documents, asks verification questions, and either clears you or escalates the case. Notice-related visits center on explaining what the IRS needs and what your response options are. Cash payment visits move into a secure area for counting and receipt.
Not everything gets resolved at the counter. Some cases get flagged for further review, and you may leave with follow-up items or a timeframe for a response. Ask for a written summary of what was discussed and any next steps before you walk out.
When a TAC Can’t Solve Your Problem
If you’ve been to a TAC, called the IRS, and still can’t get your issue resolved, the Taxpayer Advocate Service is the escalation route. TAS is an independent organization within the IRS that helps taxpayers stuck in the system, facing financial hardship because of a tax problem, or dealing with an IRS process that isn’t working as it should. Every state has at least one local advocate office. Reach TAS at 877-777-4778 or find your local advocate through the IRS website. TAS help is free.14Internal Revenue Service. The Taxpayer Advocate Service Is Your Voice at the IRS