What is a virtual fax number?

A virtual fax number is a standard fax number assigned to your online fax account — not to a phone line or fax machine. Incoming faxes are delivered to your email inbox or app. You can send faxes from any device using the same number.

Can I get a virtual fax number for free?

Yes, some services offer a free virtual fax number with limited pages per month. Most free plans restrict you to receiving faxes only and cap you at 10–30 pages. For regular sending, a paid plan starting around $20/mo is more practical.

Can I use my existing fax number as a virtual fax number?

Yes. Most providers support fax number porting — you transfer your existing number to their cloud service. The process usually takes 5–10 business days and involves submitting a signed Letter of Authorization (LOA).

Is a virtual fax number HIPAA compliant?

It depends on the provider. HIPAA compliance requires TLS encryption, a signed Business Associate Agreement (BAA), access controls, and audit logging. [mFax Business](https://mfax.to/business/) includes all of these and is designed for healthcare use cases.

What's the difference between a local and toll-free virtual fax number?

A local number uses a geographic area code (e.g., 212 for NYC), which can build trust with local contacts. A toll-free number (800, 888, 877) projects a national presence and is often preferred by businesses with clients across multiple states.

Virtual Fax Number: How to Get One & Why You Need It

A virtual fax number lets you send and receive faxes without a phone line or fax machine. Learn what it is, how to get one in minutes, and which service gives you the best value in 2026.

Frequently Asked Questions

What is a virtual fax number?: A virtual fax number is a standard fax number assigned to your online fax account — not to a phone line or fax machine. Incoming faxes are delivered to your email inbox or app. You can send faxes from any device using the same number.
Can I get a virtual fax number for free?: Yes, some services offer a free virtual fax number with limited pages per month. Most free plans restrict you to receiving faxes only and cap you at 10–30 pages. For regular sending, a paid plan starting around $20/mo is more practical.
Can I use my existing fax number as a virtual fax number?: Yes. Most providers support fax number porting — you transfer your existing number to their cloud service. The process usually takes 5–10 business days and involves submitting a signed Letter of Authorization (LOA).
Is a virtual fax number HIPAA compliant?: It depends on the provider. HIPAA compliance requires TLS encryption, a signed Business Associate Agreement (BAA), access controls, and audit logging. [mFax Business](https://mfax.to/business/) includes all of these and is designed for healthcare use cases.
What's the difference between a local and toll-free virtual fax number?: A local number uses a geographic area code (e.g., 212 for NYC), which can build trust with local contacts. A toll-free number (800, 888, 877) projects a national presence and is often preferred by businesses with clients across multiple states.