How to Fax Payroll Forms: What's Accepted

You can fax some payroll forms, but not the main ones. The IRS does not take quarterly payroll returns such as Form 941 by fax. It points employers to e-filing instead. Faxing still works for specific administrative forms, such as Form 8655, and for some state agencies that publish a fax number for registrations and similar paperwork. This guide sorts payroll paperwork into three groups: forms you should e-file, forms you can fax, and forms where a fax gives you no protection on deadlines. It then walks through sending a fax from your computer.

TL;DR

Do not fax Form 941, 940 or other employment tax returns to the IRS. E-file them through the IRS’s e-file program or file on paper as the form instructions allow.
The IRS accepts faxes for narrow administrative forms, for example Form 8655 (Reporting Agent Authorization). Use the fax number printed on the current form or IRS page.
A fax confirmation is not proof of timely filing with the IRS. The mailbox rule does not cover fax transmissions.
State agencies and employers’ internal payroll offices often take faxes. Confirm the number and page limits with the agency first.
PerPageFax sends a fax for $0.50 per page, with no account or subscription.

Which payroll forms the IRS accepts by fax

Payroll paperwork falls into two kinds. The first is returns and payments: Form 941, Form 940, Form 943, Form 944 and Form 945. The second is administrative forms: authorizations, complaints and requests that support the returns.

The IRS has moved the first kind to electronic filing. Its page on e-filing employment tax forms says you can e-file Forms 940, 941, 943, 944 and 945, plus the corrected versions 941-X, 943-X and 945-X. A fax is not an alternative filing channel for these returns.

The second kind is where faxing is still allowed. IRS Publication 1474 lists two examples:

Form	Purpose	Fax number in the IRS publication
Form 8655	Reporting Agent Authorization	855-214-7523 (RAF Team)
Form 14157	Complaint: Tax Return Preparer	855-889-7957

The same publication advises keeping a transmission to 25 pages or fewer. It also recommends computer-to-fax methods over traditional machines where possible, for better image quality and security. Fax numbers change, so check the current form instructions before you send. Our IRS fax number reference and guide to official IRS fax numbers track the lines we know of.

Form 8655 for payroll providers

Payroll service providers and reporting agents use Form 8655 to be authorized to file and pay on an employer’s behalf. If that is the form you have, our walkthrough on where to fax Form 8655 covers routing and what to include.

Forms 8821 and 2848

Two authorization forms come up often around payroll work. Form 8821 lets the IRS share your tax information with a named person. Form 2848 lets a representative act for you. We cover both: faxing Form 8821 and faxing Form 2848.

Why a fax confirmation does not prove you filed on time

This is the point that causes the most trouble. A fax machine or computer system can have its internal clock changed by a user. For that reason, the Taxpayer Advocate Service explains, the IRS does not treat a fax timestamp as legal proof of timely filing. The statutory mailbox rule in IRC section 7502 protects documents postmarked by the USPS or an authorized private delivery service. It does not extend to faxes or other electronic transmissions.

In practice:

For a deadline-driven return, use a method that produces an official acknowledgement. IRS e-file provides acknowledgement, which the IRS says arrives within 24 hours.
For a paper return, use USPS or an IRS-approved private delivery service so the postmark protects you.
Treat a fax as a way to get an administrative form in front of the right unit. Do not treat it as your proof of a filing deadline.

Recordkeeping matters for the same reason. If you issue 1099s to contractors, the numbers on your payroll forms and information returns need to agree. A step-by-step explanation of how to generate a 1099 form can help you check that your records are in order before you send anything.

State payroll forms: check the agency first

State rules differ, and many states want online filing for returns. Some agencies still publish fax numbers for specific uses. The Oregon Department of Revenue, for example, says employers registering for withholding tax can either fax or mail the form to the Employment Department, and to allow three weeks for processing. That is a registration form, not a return, which fits the pattern at the federal level.

Before faxing a state payroll form, confirm four things with the agency:

The fax number is current and belongs to the unit that handles your form.
The agency accepts that specific form by fax.
Whether it wants a cover page, an account number or a signature on each page.
How it will confirm receipt, and how long processing takes.

The same applies inside a company. Payroll departments at employers, counties and universities often list a fax line on their forms page for items such as direct-deposit changes, W-4 updates or duplicate W-2 requests. Use the number on the current form, not one from an old PDF.

Court documents involving payroll

Payroll disputes sometimes end up in court: wage claims, garnishments, and employment tax matters. Courts handle faxes very differently from tax agencies. Many federal courts require electronic filing and do not take faxes. Some state and local courts accept them for limited case types. The Superior Court of California in Amador County, for instance, accepts fax filing in certain case types, with a per-transaction fee and strict rules. Under that court’s rules, a fax received after 5:00 p.m. is treated as filed the next business day.

Some judges tell parties not to fax anything to chambers. One federal judge’s rules in the Southern District of New York state that courtesy copies may not be faxed to chambers unless the court specifically directs it. If a lawyer or clerk has not given you a published fax-filing procedure or a court order allowing it, do not rely on a fax. For court paperwork on legal-size paper, see how to make legal-size faxes count for court and IRS.

Sending payroll forms safely from your computer

Payroll forms carry Social Security numbers, wages and bank details. Before you send one, think about where the document travels.

Use computer-to-fax, not a phone app

The IRS’s own guidance supports sending from a computer instead of a standard machine. It also draws a firm line on mobile apps. An IRS interim procedural update on e-fax added a restriction on faxing tax information to a mobile app in its transcript procedures. That rule governs how IRS employees send transcripts, but it shows how the agency views app-based faxing. When you send to a receiving party, your fax goes to a fax number, not to a person’s phone.

Authorizations when a third party handles the transmission

IRS procedures on transcripts say that when taxpayer information is sent through a third-party e-fax provider, the taxpayer should provide written authorization. In the IRS’s procedures that means Form 8821 naming the provider. Those procedures describe transcript requests, so ask the IRS unit that handles your form whether any authorization is needed. Our guide to secure online fax for regulated documents explains what to look for, and our piece on TLS and BAA checks for encrypted online fax goes into detail.

Fax or email?

Email is easy, but it is rarely the channel an agency lists for sensitive forms. We compare the two in fax vs. email for sensitive documents.

How to fax a payroll form online: step by step

Confirm the form is accepted by fax. Check the form instructions or the agency page. Write down the fax number and the page limit.
Complete and sign the form. Fill in every field. Make sure signature, date and taxpayer ID are on each page that requires them.
Prepare one clean PDF. Combine the form and attachments in the right order. A clear scan at normal resolution is better than a photo taken in poor light.
Add a cover page. Include sender name, a phone number, the recipient unit, the form name and the page count.
Send and keep the confirmation. Save the delivery confirmation with your copy of the form. It documents that you sent the fax, not that it was timely filed.
Follow up. Note when the agency says it will respond. If you hear nothing by then, call the agency, and resend if asked.

If you need a downloadable record of a transmission, see our page on downloadable IRS fax confirmation.

What we see at PerPageFax

We built PerPageFax for people who need to send one document without opening an account or paying a monthly fee. Payroll work fits that pattern. An employer sends a Form 8655 once, a bookkeeper faxes a W-4 correction, a contractor sends a state registration form. None of them needs a fax line all year.

We also see how often people assume a fax is the same as filing. It is not. When a form is allowed by fax, a fax is a convenient delivery method. When a form must be e-filed, no fax service can substitute, ours included. Our advice is to check the form instructions first, send only what the agency accepts, and keep the confirmation with your records.

A few features matter for payroll paperwork. Pricing is flat, so a 6-page form costs $3.00 and nothing is added at checkout. Failed faxes are refunded, and automatic retries run before a fax is marked failed. Transmissions are encrypted. You can send PDFs and common image formats, and our free PDF tools let you merge, split and organize pages before you send.

— Engin

Send an accepted payroll form with PerPageFax

If your form is on the agency’s fax list, you can send it online with PerPageFax for $0.50 per page. There is no account and no subscription. You upload the PDF, enter the fax number, pay at checkout and receive delivery confirmation with status tracking. For US numbers, use our fax to United States page.

Cost example

Document	Pages	Cost at $0.50 per page
Cover page plus a 2-page form	3	$1.50
Form with 8 pages of attachments	9	$4.50
Maximum IRS-recommended length	25	$12.50

The 25-page figure comes from the IRS guidance for the administrative forms described above. Check whether the cover page counts toward the limit for your form.

FAQ

Does the IRS still accept faxes?

Yes, for some administrative forms, such as Form 8655 and Form 14157, at the numbers the IRS publishes. It does not accept employment tax returns like Form 941 by fax. Those go through IRS e-file or on paper under the form instructions.

Can you fax tax forms?

Only if the form’s instructions or the agency say so. Check the form page and the fax number printed on it. If the form is a return with a filing deadline, remember that a fax confirmation does not prove you filed on time.

What forms are needed for payroll?

Employers typically use Form W-4 from employees, Form I-9 for eligibility verification, quarterly Form 941 or annual Form 944, Form 940 for federal unemployment tax, and W-2s and 1099s at year end. State and local forms add to that list. The IRS keeps a list of employment tax forms that can be e-filed.

Is there a fillable version of the 941 form for 2026?

The IRS publishes the current form and its instructions for Form 941 (revised 03/2026). The instructions also describe electronic filing, including for Form 941-X. Use the IRS site for the current version, not a copy from another source.