# How to Fax the IRS from Your Phone: Numbers, Signatures, Proof IRS fax numbers for Forms 2848, 8821, SS-4, 4506-T, 2553, 8857, 14039, 15227 and 911, checked on irs.gov, plus the signature rule that gets phone-signed forms rejected. By [Dan Bayer](https://faxup.net/about) · Last updated: November 12, 2026 **To fax the IRS from your phone, scan or upload the signed form, send it to the fax number for your form and state (listed below from irs.gov), and keep the transmission report as proof.** For Forms 2848 and 8821, the IRS requires a handwritten signature on a faxed form. Several IRS units accept forms by fax, which means a phone can do the whole job: scan the signed form, dial the right unit, keep the proof. Two details decide whether the fax counts: the number has to match your state, and the signature has to be one the IRS accepts on a fax. ## IRS fax numbers by form Read on irs.gov on November 12, 2026. Where the number depends on where you live, it is split by IRS office; the state lists are in the [fax numbers directory](https://faxup.net/fax-numbers) and in each form's instructions. | Form | What it is | Fax number | Notes | | --- | --- | --- | --- | | 2848 | Power of attorney | 855-214-7519 (Memphis) or 855-214-7522 (Ogden) | By state. Outside the 50 states: 855-772-3156 | | 8821 | Tax information authorization | 855-214-7519 (Memphis) or 855-214-7522 (Ogden) | Same split as 2848 | | SS-4 | EIN application | 855-641-6935 | Business in the 50 states or DC. Otherwise 855-215-1627 | | 4506-T | Transcript request | 855-587-9604, 855-821-0094 or 855-298-1145 | By the state on the return | | 2553 | S corporation election | 855-887-7734 (Kansas City) or 855-214-7520 (Ogden) | By the corporation's state | | 8857 | Innocent spouse relief | 855-233-8558 | Don't attach it to your return | | 14039 | Identity theft affidavit | 855-807-5720 | Answering a letter? Use its number | | 15227 | Identity Protection PIN request | 855-807-5720 | Fax or mail, not both | | 911 | Taxpayer Advocate request | 855-828-2723 | Main office number | Each number in the [directory](https://faxup.net/fax-numbers) has a "Fax to this number" button that opens [faxup.net/send](https://faxup.net/send) with the number filled in. ## The signature rule that trips up phone users Signing on the screen is the obvious shortcut on a phone, and for Forms 2848 and 8821 the IRS doesn't accept it by fax. Both sets of instructions say you must handwrite your signature if you file by mail or fax, and that digital, electronic or typed-font signatures are only valid when the form is submitted online. So for these two forms: 1. Print the form, or ask the representative to send you a printed copy. 2. Sign it with a pen. Dark ink scans best. 3. Scan the signed pages with the FaxUp app's scanner, or with the free [phone document scanner](https://faxup.net/scan) in your browser. 4. Fax the scan. Don't add the signature with Fill & Sign for these forms. Use Fill & Sign for typing your details if you like, but the signature itself has to be ink on paper. For other forms, read the signature section of the instructions: the rules aren't the same for every form. ## Make the pages readable An IRS fax prints in black and white, like any other fax. Faint pencil, a light blue pen or a photo taken in a dim room can come through as blank boxes, and a form the IRS can't read is a form it can't process. - Lay the form flat under even light and keep all four edges inside the frame. - Keep every page the right way up and in order. The [organize PDF](https://faxup.net/organize-pdf) tool fixes order and rotation without uploading anything. - Run the file through the [fax preview](https://faxup.net/fax-preview) to see the black-and-white result before you pay. ## A cover sheet Form 15227 asks for a cover sheet marked "Confidential". For any IRS fax, a cover sheet with your name, the form number, the tax year and the page count helps the unit match the pages to your file. The free [cover sheet maker](https://faxup.net/fax-cover-sheet) puts it in front of your document as one PDF, or you can add one in the send flow. ## Keep proof If you turned on email notifications in the FaxUp app, a delivered fax brings an email with a one-page transmission report attached as a PDF. It lists the number dialled, the page count, the time (UTC) and a transmission reference. If the IRS later says it never received the form, that report is your evidence that it went through. Save it with a copy of what you sent. More on reading it in [fax confirmation reports](https://faxup.net/fax-confirmation). ## Sending it 1. Open [faxup.net/send](https://faxup.net/send) or the FaxUp app and add the scanned form. 2. Enter the IRS number for your form and state, with the country set to United States (+1). 3. Check the preview, add the cover sheet, and send. 4. Wait for "Delivered". If the line is busy or the call fails, FaxUp retries on its own, and a fax that never gets through gives its credit back. Ready to send it? One fax is $2.99, any number of pages, with no subscription. You see every page as it will print before it goes, and a fax that can't be delivered gives its credit back. [Fax your IRS form](https://faxup.net/send)[All verified government fax numbers (free) →](https://faxup.net/fax-numbers) Each number links to the irs.gov page it was read on, with a one-tap Fax to this number. ## Questions ### Can I sign Form 2848 or 8821 on my phone and fax it? No. The IRS instructions for both forms say a form filed by fax must carry a handwritten signature; digital, electronic or typed signatures are only accepted when you submit the form online. Sign the paper with a pen, then scan it with your phone. ### Does the IRS send a confirmation when it receives a fax? The IRS pages we checked don't promise one. Your own proof is the transmission report: with email notifications on in the FaxUp app, it arrives as a PDF when the fax is delivered. Keep it with your copy of the form. ### Which number do I use if the IRS sent me a letter? The one in the letter. For Form 14039, for example, the IRS says to use the fax number in its notice when you are answering one, rather than the general number. ### Can I fax the IRS for free? If the document is one page, yes: FaxUp's free fax covers one page (plus a cover page) to US numbers when you sign in with your email. Longer forms cost $1.99 that way, or $2.99 as a normal fax of any length. ### Are these IRS fax numbers current? They were read on irs.gov on the date at the top of this page. The IRS notes that its fax numbers may change without notice, so open the linked instructions before you send anything with a deadline. ### Can I fax the IRS from outside the US? The numbers here are US toll-free numbers. Some IRS units list a separate 304- number for callers abroad; check the form's instructions. FaxUp dials these 855 numbers from its US line wherever you are. ## Related guides - [Sign and fax from an iPhoneSign a PDF on your iPhone with FaxUp's Fill & Sign and fax it in one go, and know when the office needs a pen signature on paper instead (the IRS does for some forms).](https://faxup.net/sign-and-fax-from-iphone) - [Fax confirmation and proof of deliveryWhat a fax transmission report shows, how to get FaxUp's delivery report PDF on your iPhone or Android phone, and what it does and doesn't prove when an office says it never got your fax.](https://faxup.net/fax-confirmation) - [Fax a PDF from the Files appFax a PDF or Word file saved in Files, iCloud Drive, Google Drive or Dropbox from your iPhone: share it to the FaxUp app, or pick it in Safari at faxup.net. No printing.](https://faxup.net/fax-pdf-from-iphone-files) - [Why a fax fails, and what to doThe real reasons faxes fail, from FaxUp's own delivery records: dropped calls, no fax tone, busy lines. What each one means, how FaxUp retries, and what you can fix.](https://faxup.net/fax-failed) ## Sources - [IRS: Instructions for Form 2848 (fax numbers, handwritten signature rule)](https://www.irs.gov/instructions/i2848) - [IRS: Instructions for Form 8821 (fax numbers, handwritten signature rule)](https://www.irs.gov/instructions/i8821) - [IRS: Where to file Form SS-4](https://www.irs.gov/filing/where-to-file-your-taxes-for-form-ss-4) - [IRS: Where to file Form 2553](https://www.irs.gov/filing/where-to-file-your-taxes-for-form-2553) - [IRS: Form 4506-T (PDF), fax numbers by state](https://www.irs.gov/pub/irs-pdf/f4506t.pdf) - [IRS: Instructions for Form 8857](https://www.irs.gov/instructions/i8857) - [IRS: Form 14039 (PDF)](https://www.irs.gov/pub/irs-pdf/f14039.pdf) - [IRS: Form 15227 (PDF)](https://www.irs.gov/pub/irs-pdf/f15227.pdf) - [Taxpayer Advocate Service: submit a request for assistance (Form 911)](https://www.taxpayeradvocate.irs.gov/contact-us/submit-a-request-for-assistance/) - [FaxUp: government fax numbers, each with its source](https://faxup.net/fax-numbers) Outside sources were checked on November 12, 2026. Something wrong or out of date? Email [support@faxup.net](mailto:support@faxup.net). --- Source: https://faxup.net/fax-to-irs (Markdown copy of the page; the HTML page is canonical).