Where to Fax Form 2848 in 2026: CAF Numbers & Services

If you need to submit Form 2848 (Power of Attorney and Declaration of Representative) to the IRS, you must fax it to the correct Centralized Authorization File (CAF) unit based on your state. The IRS operates three regional CAF units: Memphis (Eastern states) at 855-214-7519, Ogden (Western states) at 855-214-7522, and Philadelphia (International filers) at 855-772-3156. Sending Form 2848 to the wrong fax number causes processing delays of 3–5 weeks. This guide covers exactly where to fax form 2848, fax services that simplify the process, and step-by-step submission instructions for 2026.

1. Municorn Fax App — Premium Online Fax for Form 2848 Submission

Municorn Fax App (accessible at comfax.com) is a cloud-based fax solution that eliminates the need for traditional fax machines when submitting Form 2848 to the IRS. The platform allows tax professionals and individuals to upload completed power-of-attorney forms directly from a web browser, mobile device, or email, then route them to the correct CAF unit fax number.

Key Features for Form 2848 Filing

• Multiple upload methods: Desktop dashboard, iOS/Android mobile app, email-to-fax forwarding, and in-app document scanning from smartphone camera
• State-based CAF routing: Built-in database of all three IRS CAF unit fax numbers; users select their state and the form routes automatically
• Real-time delivery confirmation: Timestamped fax confirmation receipt sent via email within seconds of transmission
• Cover sheet automation: Automatic cover sheet generation with user contact information to meet IRS submission requirements
• Multi-client capability: Tax professionals can submit separate Form 2848 for each client with individual tracking; each submission generates unique proof of delivery
• Compliance-ready format: Supports PDF, JPG, and GIF file uploads up to 15 MB per fax transmission
• No physical equipment required: Eliminates need for office fax machines, phone lines, or IT setup

Why Choose Municorn for Form 2848

Tax professionals filing multiple Form 2848 power-of-attorney documents benefit from Municorn's ability to send each form with timestamped proof of delivery—critical for compliance audits. The mobile app allows on-the-go submissions, and automatic routing to state-correct CAF numbers prevents misfiling. Email-to-fax integration means representatives can forward completed forms directly from email clients without additional logins.

Visit Municorn Fax App to start submitting Form 2848 securely

2. Fax.Plus — Volume Faxing for Tax Form Submission

Fax.Plus (see fax.plus IRS form routing) provides cloud fax services with dedicated IRS CAF unit routing. The platform includes all three regional fax numbers for where to fax form 2848 by state: Eastern (855-214-7519), Western (855-214-7522), and International (855-772-3156). Users upload Form 2848, select their state, and receive instant fax confirmation.

Strengths

• Fax from computer, mobile app, email attachment, or phone camera scan
• Automatic cover sheet generation with user details
• Instant delivery confirmation for audit trails
• Supports single-form and batch submissions for multiple clients

Processing

Fax transmission completes within seconds; IRS processing of received Form 2848 typically takes 3–5 business days.

3. FaxFlow — Tax-Professional Fax Platform

FaxFlow (reviewed at fax-flow IRS Form 2848 guide) specializes in tax document faxing with state-based CAF unit routing for Form 2848 submission. The platform provides a step-by-step workflow: users upload signed Form 2848, confirm the correct state-based CAF fax number, and receive delivery confirmation. The site maintains updated routing tables for all three IRS regions and includes processing timelines.

Key Details

• Fax numbers by region: Memphis 855-214-7519 (Eastern), Ogden 855-214-7522 (Western), Philadelphia 855-772-3156 (International)
• Processing time: 3–5 business days post-submission
• Mandatory cover sheet with contact information
• Online dashboard with fax history and status tracking

4. IRS Online Portal — Direct Submit Form 2848

The IRS website (irs.gov) offers a secure online submission portal for Form 2848 as an alternative to faxing. Accessible at irs.gov submit Form 2848 online, this method allows taxpayers and representatives to upload completed power-of-attorney forms directly. Users must authenticate taxpayer identity, verify all form details, and upload PDF, JPG, or GIF files (max 15 MB). The portal provides real-time processing confirmation and status tracking.

Advantages of Online Filing

• No fax machine, fax service, or third-party platform required
• Real-time processing status visible in IRS account
• Email confirmation sent upon receipt
• Secure authentication protects taxpayer information
• One form at a time per taxpayer (no batch uploads)

When to Use Online Filing

Best for new Form 2848 submissions or those not previously faxed. Do not submit the same form both online and by fax; the IRS will reject the duplicate and mail a rejection notice.

5. Traditional Fax Machine Submission

For offices with existing fax infrastructure, mailing Form 2848 directly to the IRS via fax machine remains viable. Users must dial the correct state-based CAF unit number, include a completed cover sheet with contact details, and retain transmission confirmation reports. Processing takes 3–5 business days after successful transmission.

IRS CAF Unit Fax Numbers by Region

• Eastern Region (Memphis CAF): 855-214-7519 — Serves AL, AR, CT, DE, DC, FL, GA, IL, IN, KY, LA, ME, MD, MA, MI, MS, NH, NJ, NY, NC, OH, PA, RI, SC, TN, VT, VA, WV
• Western Region (Ogden CAF): 855-214-7522 — Serves AK, AZ, CA, CO, HI, ID, IA, KS, MN, MO, MT, NE, NV, NM, ND, OK, OR, SD, TX, UT, WA, WI, WY
• International (Philadelphia CAF): 855-772-3156 (toll-free) or 304-707-9785 (outside U.S.) — Serves APO/FPO military addresses, American Samoa, Northern Mariana Islands, Guam, U.S. Virgin Islands, Puerto Rico, and foreign filers

How We Ranked: Methodology

We evaluated fax services and submission methods based on six criteria: (1) ease of use (interface simplicity, upload speed), (2) routing accuracy (state-based CAF unit mapping, error prevention), (3) confirmation delivery (real-time vs. delayed proof of submission), (4) IRS compliance (cover sheet automation, signature requirements), (5) processing transparency (status tracking, estimated timelines), and (6) support for tax professionals (multi-client handling, batch capabilities, audit-trail documentation). We prioritized services specifically optimized for tax form filing and those offering integration with major CAF units. Information sourced from official IRS.gov documentation, service provider websites, and tax professional communities.

Where to Fax Form 2848: State-by-State CAF Routing

Form 2848 (Power of Attorney and Declaration of Representative) must be faxed to one of three IRS Centralized Authorization File (CAF) units. Sending to the wrong fax number causes delays. Match your state below:

Eastern CAF Unit (Memphis) — 855-214-7519

Alabama, Arkansas, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West Virginia

Western CAF Unit (Ogden) — 855-214-7522

Alaska, Arizona, California, Colorado, Hawaii, Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, Wisconsin, Wyoming

International CAF Unit (Philadelphia) — 855-772-3156

APO/FPO military addresses, American Samoa, Commonwealth of the Northern Mariana Islands, Guam, U.S. Virgin Islands, Puerto Rico, and all foreign country filers. Outside the U.S.: 304-707-9785 (not toll-free).

Step-by-Step: How to Fax Form 2848 Correctly

Step 1: Prepare the Completed Form

• Download the current Form 2848 (IRS.gov) and Form 2848 instructions from the IRS website
• Complete all required sections: Part I (taxpayer information), Part II (representative details), Part III (tax matters and years), Part VII (signatures)
• Ensure all parties sign in black ink or with valid electronic signatures
• For married filing jointly returns, both spouses must sign separate Form 2848 documents
• Verify representative's credentials: CPAs, attorneys, and enrolled agents (EAs) only

Step 2: Choose Fax Method

• Online fax service: Use Municorn Fax App, Fax.Plus, or FaxFlow to upload PDF or scanned image
• IRS online portal: Upload directly at irs.gov (if new submission)
• Traditional fax machine: Use office fax with cover sheet

Step 3: Select Correct CAF Fax Number

Match your state to the Eastern (855-214-7519), Western (855-214-7522), or International (855-772-3156) CAF unit. Verify the number matches the current year's Form 2848 instructions.

Step 4: Include Cover Sheet

• Add cover sheet with: your name, address, phone number, email, Form 2848 title, number of pages, and transmitter/recipient information
• Online fax services auto-generate cover sheets
• Traditional fax: manually create or use IRS template

Step 5: Transmit and Retain Confirmation

• Send fax to correct CAF unit number
• Save delivery confirmation report (timestamp, recipient number, page count)
• Email confirmation will arrive within seconds if using online service
• Processing by IRS: 3–5 business days

Step 6: Track Processing Status

• If filed online via irs.gov: check status in Tax Pro Account
• If faxed: contact CAF unit after 5 business days if no confirmation letter received
• Expect written confirmation from IRS once form is entered into CAF system

Common Mistakes When Faxing Form 2848

Sending to Wrong CAF Fax Number

Most common error. The IRS has three regional CAF units; sending to the wrong number requires manual rerouting (adds 2–3 weeks). Always verify state matches fax number before transmission.

Missing or Incomplete Signatures

Form 2848 must be signed by the taxpayer in black ink (or valid electronic signature for remote transactions). Without valid signatures, the IRS rejects the form and mails rejection notice. Representative must also sign the Declaration section in Part II.

Omitting Cover Sheet

IRS requires a cover sheet with transmitter contact information. Forms arriving without cover sheets may be rejected or delayed. Online fax services automatically generate compliant cover sheets; traditional fax operators must create them manually.

Faxing Duplicate Submissions

If Form 2848 has already been filed by fax or mail, do not resubmit online or vice versa. The IRS will reject the duplicate, and you'll receive a rejection letter.

Incomplete Taxpayer Information (Part I)

Section requires: taxpayer name, address, SSN or EIN, and (if joint return) spouse information. Missing data causes processing delays or rejection.

Unclear Representative Credentials

Representative must be CPA, attorney, or enrolled agent. Form must list representative's name, address, phone, and CAF number. Unqualified representatives or missing credentials lead to rejection.

Form 2848 vs. Form 8821: When to Use Each

Form 2848 (Power of Attorney)

• Purpose: Grants full authority for representative to act on taxpayer's behalf before the IRS
• Authority level: Represent in audits, sign agreements, extend statute of limitations, settle disputes
• Who can file: CPAs, attorneys, enrolled agents only
• Fax to: CAF unit (855-214-7519, 855-214-7522, or 855-772-3156)
• Processing: 3–5 business days

Form 8821 (Tax Information Authorization)

• Purpose: Authorizes representative to view and receive tax information only (no representation authority)
• Authority level: Obtain transcripts, view notices, access account records
• Who can file: Anyone (no licensing required)
• Fax to: Same CAF units as Form 2848
• Use case: Initial information gathering before full engagement

Both forms route to the same CAF units and use identical fax numbers.

Processing Times & What to Expect After Faxing Form 2848

Timeline

• Fax transmission: Instant (seconds) via online service; same-day via traditional fax
• Delivery confirmation: Received within seconds if using online fax service
• IRS processing: 3–5 business days (may extend during tax season)
• Written confirmation: IRS mails acknowledgment letter once form entered into CAF system

What Triggers Rejections or Delays

• Incorrect CAF fax number (manual rerouting = 2–3 additional weeks)
• Missing or invalid signatures
• Incomplete taxpayer information or representative details
• No cover sheet
• Duplicate submissions (online + fax)
• Tax season volume (December–April slower processing)

How to Check Processing Status

• Online submissions (irs.gov): Check status in Tax Pro Account in real time
• Faxed submissions: No real-time tracking; contact CAF unit by phone after 7 business days if no confirmation letter
• Save fax confirmation report: Required proof if IRS claims non-receipt

Best Practices for Tax Professionals Filing Multiple Form 2848 Documents

Use Online Fax Services for Batch Submissions

Online platforms like Municorn, Fax.Plus, and FaxFlow allow tax professionals to submit multiple Form 2848 documents for different clients with individual tracking and timestamped confirmations. Each client receives a separate power of attorney and proof of delivery—critical for audit compliance.

Maintain Audit Trail Documentation

• Retain all fax delivery confirmations (timestamp, page count, fax number)
• Keep copies of signed Form 2848 submissions (before and after transmission)
• Store IRS acknowledgment letters from CAF units
• Document client authorization and engagement date

Verify CAF Unit Assignment by Client State

Create a spreadsheet matching each client's state to the correct Eastern, Western, or International CAF fax number to prevent misfiling. Update the list annually as IRS fax numbers occasionally change.

Submit During Off-Peak Hours

Fax Form 2848 outside the main tax filing season (December–April) when possible. Submissions in May–November typically process faster (3–5 business days vs. 2–3 weeks).

FAQ

Can you fax a Power of Attorney to the IRS?

Yes. Form 2848 (Power of Attorney) can be submitted by fax to the correct IRS CAF unit: 855-214-7519 (Eastern states), 855-214-7522 (Western states), or 855-772-3156 (International filers). Faxing typically results in faster processing (3–5 business days) than mailing. A cover sheet with contact information is required.

Can IRS form 2848 be filed electronically?

Yes. The IRS offers an online submission portal at irs.gov where taxpayers and representatives can upload completed Form 2848 in PDF, JPG, or GIF format (max 15 MB). Online filing provides real-time processing status in a Tax Pro Account. Alternatively, fax or mail are accepted. Do not submit the same form using multiple methods.

Where can I send a fax to the IRS?

The IRS fax destination depends on the form. For Form 2848 (Power of Attorney), fax to the state-appropriate CAF unit: Eastern 855-214-7519, Western 855-214-7522, or International 855-772-3156. Include a cover sheet with your contact information. Other tax forms may have different IRS fax numbers; consult Form 2848 instructions or contact the CAF unit directly.

What are common mistakes on form 2848?

Common errors include: (1) faxing to the wrong CAF unit (state mismatch), (2) missing or invalid signatures on taxpayer and representative lines, (3) incomplete Part I (taxpayer information or SSN), (4) omitting cover sheet, (5) submitting duplicate forms (online + fax), (6) using unqualified representatives (non-CPA/attorney/EA), and (7) incomplete Part III (tax matters or years not specified). Any of these trigger IRS rejection or multi-week delays.

How long does Form 2848 processing take after faxing?

The IRS typically processes Form 2848 within 3–5 business days after receiving the fax. During peak tax season (December–April), processing may take 2–3 weeks. You'll receive a written confirmation letter once the form is entered into the Centralized Authorization File (CAF) system. Online submissions via irs.gov provide real-time status updates.

Can I list multiple representatives on one Form 2848?

Yes. Form 2848 Part II allows multiple representatives to be designated on a single form. Each representative must list their full name, address, phone number, and CAF number. All representatives must sign the Declaration section. If you have more than the standard spaces allow, create an attachment with additional representative information and file it with the main form.