By Michael Chen · Published March 27, 2026 · Updated June 8, 2026 · 9 min read
Epson EcoTank printers are best known for their ultra-low ink costs — but the higher-end models also include a built-in fax modem. The catch: Epson EcoTank fax requires a traditional analog phone line, which fewer homes and offices have every year. This guide covers which EcoTank models actually support fax, how to set up and use the feature, what the real costs are, and what to do if you don't have a landline.
No phone line? Jump to alternatives
If your home or office runs on VoIP, fiber, or has no landline at all, skip to the Online Fax Alternatives section — those options work from any device without a phone cord.
Which Epson EcoTank Models Have Fax
Not every EcoTank includes a fax modem. It is a feature reserved for the upper-tier all-in-one models. The clearest way to confirm: look for an RJ-11 LINE port on the back of the printer. If it's not there, the model cannot fax.
Current fax-capable EcoTank models (US market):
| Model | MSRP | Key Specs | Fax Memory |
|---|---|---|---|
| ET-4800 | ~$299–$349 | ADF, Ethernet, 2.4" display | ~50 pages |
| ET-4850 | ~$349–$499 | 30-sheet ADF, touchscreen, duplex | ~100 pages |
| ET-4950 | ~$399–$449 | 7th gen, 250-sheet tray, PrecisionCore | ~100 pages |
| EcoTank Pro ET-5850 | ~$499–$599 | 500-sheet tray, 4.3" touchscreen, 25 ppm | Up to 550 pages |
| EcoTank Pro ET-5170 | ~$449–$549 | Pro-grade, network-ready | ~100 pages |
Models without fax (print/scan/copy only): ET-2800, ET-2803, ET-3850, ET-3760, and most entry-level EcoTank models.
Check the back panel before you buy
Retailers sometimes group all EcoTank models together. Before purchasing specifically for fax, confirm the spec sheet lists "Fax" and verify there's an RJ-11 LINE port on the rear of the unit.
What You Need Before Setting Up Fax
The Epson EcoTank fax modem is analog only. That means one non-negotiable requirement before anything else works:
- An active analog (POTS) telephone line — the traditional copper wire landline service. Connect it to the RJ-11 LINE port (not the EXT port) on the back of the printer.
Beyond that, a few conditions affect whether faxing will work smoothly:
| Connection Type | Fax Compatible? | Notes |
|---|---|---|
| Analog landline (POTS) | Yes | Fully supported |
| DSL | Yes, with filter | Install a DSL filter on the wall jack before connecting the printer |
| VoIP (Vonage, Ooma, etc.) | Unreliable | Epson does not guarantee compatibility; ECM must be disabled |
| Fiber with ATA adapter | Partially | May work at reduced speeds — results vary by provider |
| Pure internet / no phone line | No | Use an online fax service instead |
For users on DSL: contact your DSL provider for a free DSL filter if you don't already have one. Without it, the digital DSL signal will interfere with the analog fax signal and calls will fail or be corrupted.
For VoIP users considering an ATA adapter, see our guide on faxing over VoIP — why it can be trouble before investing in hardware.
How to Set Up Fax on an Epson EcoTank
Initial fax setup takes about ten minutes. Do it once and the printer remembers your settings.
Connect the phone line
Plug one end of an RJ-11 phone cable into the wall jack and the other into the LINE port on the back of your EcoTank. If you share the line with a telephone, plug the phone into the EXT port.
Launch the Fax Setup Wizard
On the printer's touchscreen: press Home → Fax → Menu → Fax Settings → Basic Settings. On older models with physical buttons: press Setup → Fax Settings. Select Fax Setup Wizard and follow the on-screen prompts.
Enter your fax header information
The wizard will ask for your fax number and a sender name (company name or personal name). This information prints at the top of every fax you send — it is legally required on fax transmissions in the US.
Set the receive mode
Choose Auto if this phone line is dedicated to fax. Choose Manual only if a human needs to answer voice calls on the same line and decide whether each incoming call is a fax. For most setups, Auto is correct.
Send a test fax
Call the line from a mobile phone to confirm the printer answers. Then send a test fax to a friend or to an online fax-to-email service to confirm transmission works in both directions.
See the Epson fax machine setup guide for more detail on the configuration options common to all fax-capable printers.
How to Send a Fax from an Epson EcoTank
Load your document
Place the document face-up in the Automatic Document Feeder (ADF) tray, or face-down on the flatbed glass for single pages or bound documents. The ADF handles multi-page documents (up to 30 sheets) automatically.
Open the Fax menu
Press Home on the touchscreen, then tap Fax. The fax entry screen opens.
Enter the recipient fax number
Type the number using the on-screen keypad. Include the area code and, for long-distance, the 1 prefix. For international faxes, dial your country's exit code + country code + number.
Adjust settings (optional)
Tap Settings to change resolution (Standard / Fine / Super Fine / Photo), density (lighter or darker), and whether to send in color or monochrome. Standard resolution is fine for text documents; use Fine or Super Fine for small print or forms.
Press Send
Tap Send (or the Start/Send button on older models). The printer scans the document and dials automatically. A confirmation report prints after transmission if you have that setting enabled.
Save frequent numbers in the contact list
The ET-4850 and ET-5850 let you save up to 200 contacts. For recurring fax recipients — doctors, attorneys, government offices — saving the number takes a few seconds now and saves time on every future fax.
How to Receive a Fax
In Auto mode, the printer monitors the phone line and answers incoming fax calls after the configured number of rings. Received faxes print automatically and, on the ET-5850, can also be stored in memory (up to 550 pages) for printing later.
In Manual mode, you must press the Start button when the printer displays an incoming fax notification. Use this only if you actively monitor the printer.
Receive mode conflicts to watch for:
- Voicemail service: If your telecom provider's voicemail answers after 3 rings and your printer is set to answer after 4, every incoming fax goes to voicemail instead. Either disable voicemail on the fax line or set the printer to answer in fewer rings than voicemail kicks in.
- Call waiting: An incoming call waiting signal during a fax transmission will interrupt and corrupt the connection. Disable call waiting on the fax line by dialing
*70before sending (or ask your carrier to disable it permanently on that line). - Call forwarding: Any call-forwarding service on the fax line will reroute incoming faxes away from the printer.
Epson EcoTank Fax Costs
Understanding the real cost of faxing with an EcoTank requires looking beyond the printer sticker price.
| Cost Item | Amount | Notes |
|---|---|---|
| Printer hardware | $299–$599 | One-time; ET-4850 is the most popular fax model |
| Ink (initial bundle) | Included | Covers 5,200–14,000 pages depending on model |
| Ink replacements | ~$13–$20/bottle | Individual color bottles; very low per-page cost |
| Ink cost per page (black) | ~$0.003/page | About 90% cheaper than cartridge printers |
| Phone line (dedicated) | $15–$40/month | The biggest ongoing cost — often overlooked |
| Phone line (shared with voice) | $0 extra | If you already pay for a landline |
The printer's ink running costs are genuinely exceptional — that's the EcoTank's main selling point. But if you don't already have a landline, adding one just for faxing will cost $180–$480 per year. At that price, an online fax service is usually cheaper if you fax fewer than a few hundred pages per month.
For a broader breakdown of fax hardware costs, see our fax machine cost guide.
Common Problems and Fixes
Problem: "No Dial Tone" error
The printer cannot detect an active analog signal on the LINE port. Check that:
- The cable is plugged into LINE, not EXT
- The wall jack is active (test with a regular phone)
- If on DSL, a DSL filter is installed between the wall jack and printer
Problem: Fax sends but recipient says it came through blank or distorted
Usually a line quality issue. Lower the transmission speed in Fax Settings → Advanced → Fax Speed (try 9,600 bps instead of the default 33,600 bps). On VoIP lines, also disable ECM (Error Correction Mode).
Problem: Can send faxes but cannot receive them
Check three things in order:
- Receive Mode is set to Auto (not Manual)
- The ring count in the printer is lower than your voicemail's ring count
- No call forwarding or call waiting subscriptions are active on the line
Problem: Fax fails on VoIP line
VoIP compresses audio in ways that corrupt analog fax signals. Disable ECM and set fax speed to 9,600 bps or lower. If it still fails, the only reliable fix is to switch to an online fax service — see the section below.
VoIP faxing is fundamentally unreliable
Epson explicitly states it cannot guarantee fax functionality over VoIP. Disabling ECM reduces (but does not eliminate) failures, and it also removes the ability to send color faxes. If your office runs on VoIP, an online fax service is more reliable and often cheaper.
Epson EcoTank vs. Other All-in-One Printers for Faxing
| Printer | Ink System | Fax | Price (approx.) | Ink Cost/Page | Fax Memory |
|---|---|---|---|---|---|
| Epson EcoTank ET-4850 | Ink tank | Yes | $349–$499 | ~$0.003 | ~100 pages |
| Epson EcoTank ET-5850 | Ink tank | Yes | $499–$599 | ~$0.003 | 550 pages |
| Canon PIXMA G7020 | Ink tank | Yes | $249–$299 | ~$0.003 | ~50 pages |
| Brother MFC-J995DW | XL cartridge | Yes | $179–$249 | ~$0.009 | ~150 pages |
| Brother MFC-J4335DW | XL cartridge | Yes | $149–$199 | ~$0.009 | ~100 pages |
| HP OfficeJet Pro 9015e | Cartridge/Instant Ink | Yes | $199–$249 | ~$0.02 | ~100 pages |
Key takeaways from the comparison:
- Lowest ink running costs: EcoTank and Canon G7020 are tied at ~$0.003/page — far cheaper than cartridge models over time.
- Best fax memory: The ET-5850's 550-page memory stands out if you receive high fax volumes.
- Best hardware value for faxing: The Canon G7020 at ~$249 delivers ink-tank economics with fax at a lower entry price than the EcoTank ET-4850.
- Most reliable fax hardware: Brother printers have a long-standing reputation for dependable fax functionality, and their models are a common recommendation in office settings where fax reliability is critical.
Online Fax Alternatives When There Is No Phone Line
If your EcoTank doesn't have fax, you're on VoIP, or you simply don't want to maintain a landline, an online fax service is the practical solution. You send and receive faxes over the internet from any device — phone, tablet, or browser.
mFax is the fastest way to send a fax from your phone. Upload a PDF or snap a photo of your document, enter the fax number, and send. No phone line, no printer, no setup. Over 5 million users have sent faxes this way with a 98% delivery success rate.
mFax works even when your printer can't
Have an EcoTank model without fax? Running on VoIP? Traveling? mFax.to lets you send a fax in under 2 minutes from your phone — cheaper than most landline plans per fax sent.
For users who fax regularly as a business — healthcare, legal, insurance — mFax Business adds a dedicated virtual fax number, HIPAA-ready features, team accounts, and a web dashboard, starting at about $9/mo (billed annually). Instead of locking you into rigid fixed tiers, mFax lets you build your own plan with a live calculator — pick the exact seats and pages you need and pay only for what you use.
When each option makes sense:
| Situation | Best Choice |
|---|---|
| Have a landline, fax frequently | Use your EcoTank's built-in fax |
| No landline, fax occasionally | Online fax service (pay-per-fax) |
| No landline, fax regularly for business | mFax Business from about $9/mo |
| On VoIP — fax is unreliable | Switch to online fax entirely |
| EcoTank model has no fax port | Online fax service required |
For a detailed comparison of online fax options, see our best online fax services guide. If you're specifically looking for a phone-line-free solution, our how to fax without a landline guide walks through every option.
Send Your Fax Now
If your EcoTank supports fax and you have a landline, the setup process above will have you sending and receiving faxes in under 15 minutes. If you don't have a phone line — or simply want the convenience of faxing from your phone — mFax.to gets it done in under 2 minutes, no hardware required.
Download the mFax app or visit mFax.to, upload your document, enter the fax number, and send. No machine. No phone line. No waiting.