Do I need a fax machine to set up a fax number?

No. With a virtual fax number from an online service, you receive faxes as PDF attachments in your email and send them through a web or mobile app — no fax machine or phone line required. [mFax Business](https://mfax.to/business/) lets you set up a dedicated fax number in under 5 minutes.

How long does it take to get a fax number?

With an online fax service, your number is active in under 5 minutes. Traditional phone-line fax numbers require scheduling a technician visit and can take 1–5 business days. Porting an existing fax number to a new service typically takes 5–10 business days.

Can I keep my existing fax number if I switch providers?

Yes — this is called number porting. You submit a Letter of Authorization (LOA) and a recent invoice from your current provider to the new service. The process takes about 5–10 business days. Most online fax services support inbound porting at no charge or a one-time fee under $30.

What is the difference between a local and toll-free fax number?

A local fax number uses a geographic area code (e.g., 312 for Chicago) and signals regional presence. A toll-free number (800, 888, 877, etc.) projects national reach and is free for callers dialing from within the country. Businesses with nationwide clients typically choose toll-free; local firms or individuals prefer a local area code.

Can I set up a fax number for free?

Yes, with limits. Free plans from services like FaxBurner or Dropbox Fax cap you at 10–30 received pages per month and often exclude outbound faxing. For regular use — especially for business — a paid plan starting around $20/mo gives you a permanent dedicated number, outbound pages, and archiving.

How to Set Up a Fax Number: Step-by-Step Guide (2026)

Setting up a fax number takes under 5 minutes — no hardware, no phone line required. This guide walks through every method: online fax services, VoIP, and traditional landlines, plus how to port an existing number and what features to look for.

Frequently Asked Questions

Do I need a fax machine to set up a fax number?: No. With a virtual fax number from an online service, you receive faxes as PDF attachments in your email and send them through a web or mobile app — no fax machine or phone line required. [mFax Business](https://mfax.to/business/) lets you set up a dedicated fax number in under 5 minutes.
How long does it take to get a fax number?: With an online fax service, your number is active in under 5 minutes. Traditional phone-line fax numbers require scheduling a technician visit and can take 1–5 business days. Porting an existing fax number to a new service typically takes 5–10 business days.
Can I keep my existing fax number if I switch providers?: Yes — this is called number porting. You submit a Letter of Authorization (LOA) and a recent invoice from your current provider to the new service. The process takes about 5–10 business days. Most online fax services support inbound porting at no charge or a one-time fee under $30.
What is the difference between a local and toll-free fax number?: A local fax number uses a geographic area code (e.g., 312 for Chicago) and signals regional presence. A toll-free number (800, 888, 877, etc.) projects national reach and is free for callers dialing from within the country. Businesses with nationwide clients typically choose toll-free; local firms or individuals prefer a local area code.
Can I set up a fax number for free?: Yes, with limits. Free plans from services like FaxBurner or Dropbox Fax cap you at 10–30 received pages per month and often exclude outbound faxing. For regular use — especially for business — a paid plan starting around $20/mo gives you a permanent dedicated number, outbound pages, and archiving.