What is the best online fax service for small businesses?

For most small businesses, mFax Business is the top pick — HIPAA compliance and a BAA are included on every paid plan starting at $20.99/mo, with transparent pricing and a 14-day free trial. For non-regulated businesses on a tight budget, Fax.Plus Basic ($8.99/mo) or Nextiva vFAX Essential ($7.95/mo) are excellent value options.

How much does online fax cost for a small business?

Online fax for small businesses typically costs $8–$35/month for a complete subscription. Compare that to a traditional fax machine setup, which runs $500–$2,500/year when you include hardware, a dedicated phone line, paper, and toner. Most small businesses save $400–$1,500 per year by switching to an online service.

Do small businesses need HIPAA-compliant fax?

Any business that handles Protected Health Information (PHI) — medical practices, dental offices, insurance agencies, and their vendors — must use a HIPAA-compliant fax service that will sign a Business Associate Agreement (BAA). See our guide to [HIPAA fax requirements](/blog/hipaa-fax-requirements/) for the full checklist.

Can I keep my existing fax number when switching to an online service?

Yes. All five services on this list support number porting — transferring your current fax number to the new provider. Porting typically takes 5–10 business days and is usually free or included in the plan.

Is there a free online fax service for small businesses?

There is no truly free business fax service — free tiers (like Fax.Plus's 10-page lifetime allowance) are for occasional personal use only and never include a BAA. For small businesses, a $7.95–$20.99/month subscription is the minimum realistic cost. Use a free trial to test before committing.

Best Online Fax for Small Business: Top 5 Affordable Options

Finding the best online fax for small business means balancing cost, simplicity, and compliance. We compared the top 5 affordable services — from mFax Business to Fax.Plus and Nextiva — so you can ditch the fax machine and start saving today.

Frequently Asked Questions

What is the best online fax service for small businesses?: For most small businesses, mFax Business is the top pick — HIPAA compliance and a BAA are included on every paid plan starting at $20.99/mo, with transparent pricing and a 14-day free trial. For non-regulated businesses on a tight budget, Fax.Plus Basic ($8.99/mo) or Nextiva vFAX Essential ($7.95/mo) are excellent value options.
How much does online fax cost for a small business?: Online fax for small businesses typically costs $8–$35/month for a complete subscription. Compare that to a traditional fax machine setup, which runs $500–$2,500/year when you include hardware, a dedicated phone line, paper, and toner. Most small businesses save $400–$1,500 per year by switching to an online service.
Do small businesses need HIPAA-compliant fax?: Any business that handles Protected Health Information (PHI) — medical practices, dental offices, insurance agencies, and their vendors — must use a HIPAA-compliant fax service that will sign a Business Associate Agreement (BAA). See our guide to [HIPAA fax requirements](/blog/hipaa-fax-requirements/) for the full checklist.
Can I keep my existing fax number when switching to an online service?: Yes. All five services on this list support number porting — transferring your current fax number to the new provider. Porting typically takes 5–10 business days and is usually free or included in the plan.
Is there a free online fax service for small businesses?: There is no truly free business fax service — free tiers (like Fax.Plus's 10-page lifetime allowance) are for occasional personal use only and never include a BAA. For small businesses, a $7.95–$20.99/month subscription is the minimum realistic cost. Use a free trial to test before committing.