Best Free VoIP Providers for Business 2021

Best for freelancers
Google Voice Logo
Google Voice
  • Icon Pros  Dark
    Calls to cells and landlines
  • Icon Pros  Dark
    Unlimited calling in US and Canada
Best for internal use
Microsoft Teams
Microsoft Teams
  • Icon Pros  Dark
    Audio/video calling to Teams users
  • Icon Pros  Dark
    Many integrations
Best for inbound support
on S I P logo
  • Icon Pros  Dark
    Inbound voice and video chat
  • Icon Pros  Dark
    Call handling rules
Best for interviews
skype logo
  • Icon Pros  Dark
    Availability on many devices
  • Icon Pros  Dark
    Widespread use
Best all-in-one
bitrix24 logo
  • Icon Pros  Dark
    CRM and project management tools
  • Icon Pros  Dark
    Internal calling

Ready to switch your business to VoIP (Voice over Internet Protocol), but not ready to add monthly phone service payments to your budget? We get it, which is why we’ve rounded up VoIP providers that offer free calls (and more).

Now, you do need to understand that free VoIP service comes with lots of limitations, which we’ll point out throughout this article. (And we’ll explain why you might want to go with a paid VoIP service too.)

In other words, don’t expect a free VoIP provider to be a 1:1 replacement for your old phone system.

If you can live with that, though, then we’ve got some VoIP companies worth looking at.

Best free business VoIP service

Compare the best free VoIP providers for business

Free calling
Free VoIP number
Learn more
Google Voice$0/userIcon Yes  Dark
Microsoft TeamsTo Teams usersIcon No  Dark
OnSIPFrom widget on your websiteIcon No  Dark
SkypeTo Skype usersIcon No  Dark
Bitrix24To Bitrix24 usersIcon No  Dark

Data effective 12/28/20. At publishing time, amounts, rates, and requirements are current but are subject to change. Offers may not be available in all areas.

Google Voice: Best for freelancers

Google Voice Logo
Google Voice

If you need just one line (perhaps for your freelancing business), then Google Voice offers the best calling of free business VoIP providers.

Google Voice is the only free VoIP provider on this list that offers free, unlimited calling to actual phone numbers (both landlines and cells). But since you get just one line for one person, it really only works for freelancers and other solopreneuers.

When you sign up for Google Voice (and we’re talking about the free Personal version here), you get a free VoIP number (you can usually get one for your local area). Then you can make outgoing calls and take incoming calls from your cell phone or desktop, as long as you have the Google Voice app. 

In fact, you get unlimited calling in both the United States and Canada. You can also send and receive unlimited text messages.

But again, Google Voice’s free solution won’t work for an entire team―or any business that needs more than one person to take calls, for that matter. (Google Voice does offer paid business plans that work for teams.) It’s better for the smallest of small businesses.

Microsoft Teams: Best for internal use

Microsoft Teams
Microsoft Teams

Microsoft Teams has great video and audio calling, chat, and storage features on its free plan, making it a good fit for internal communication.

If you want VoIP mostly to help your team members communicate with each other, then take a look at Microsoft Teams.

While Teams has several paid plans, its free plan is robust enough to work for many small businesses. It offers unlimited calling (both video and audio calls) to other Teams users. Sure, you’re limited to 100 people in a call and only 60 minutes per meeting―but how often do you need 400 people to meet for 120 minutes?

Plus, Microsoft Teams comes with all sorts of handy features that can help your team stay in touch. There’s stuff like file sharing and chat, but also features that improve your video calls. Think virtual backgrounds and a shared canvas you can draw on during meetings. Oh, and Teams integrates with loads of other apps.

So though Teams won’t be much help with calling customers, its free calls can help your team collaborate and communicate.

OnSIP: Best for inbound customer service

on S I P logo

OnSIP offers free inbound video and audio chats from your website―perfect for customer service needs.

OnSIP offers a free version of its sayso service―basically an app for inbound voice and video chatting.

You just add the OnSIP sayso widget to your website, and customers will be able to click a button that starts a voice or video call with one of your representatives. So whether they just have a question or need help placing an order, your customers can easily get in touch with your business.

OnSIP sayso even offers some basic calling rules, so you can set up schedules or choose which reps answer calls on which topics. (You get more advanced features, like analytics and screen sharing, when you upgrade to the paid plan.)

Just remember that OnSIP works for incoming calls only. It’s a great way for your customers to call you―but for outgoing calls, you’ll need another VoIP network.

Skype: Best for interviews

skype logo

Skype is super popular and widely available, so it can work great for the occasional outbound call, like for hiring.

You’ve probably heard of Skype―pretty much everyone has. And that’s why it’s great for scheduled conversations, like hiring interviews.

As you may know, Skype offers free video and audio calls to other Skype users. (You can pay to make calls to landline and cell phone numbers.) You can record calls, share your screen, and add live captions on calls of up to 100 participants. 

And you’re not limited to using Skype on your phone or computer, either. It’s available on lots of devices, from gaming consoles to Amazon Alexa. That means most people you need to talk to can get and use Skype (if they don’t already have the app installed). With that kind of availability, Skype is great for calling job candidates and other people you don’t expect to have specialized calling software.

But as with other free VoIP services, free Skype service probably won’t work for day-to-day calling. After all, you have to pay to make calls to actual phone numbers. So stick with Skype for occasional scheduled calls, and find another solution for your everyday phone service needs.

Bitrix24: Best all-in-one solution

bitrix24 logo

Bitrix24 gives you internal calls as part of its very comprehensive CRM and project management solution.

If you want one piece of software that offers calling, project management, customer relationship management, website building, and more, then you’ll like Bitrix24.

Much like Microsoft Teams, Bitrix24 offers communication tools―like audio calls, video calls, text chat, and more―for your internal team. Its video calls are a bit more limited than Teams, since you can only have 24 people in a call. 

But as we’ve said, Bitrix24 really stands out because of everything else it offers. Even on the free plan, you get basic CRM software, HR tools, website building software, and so, so much more. Sure, the features for all those are pretty basic on its free plan. But given the sheer number of things Bitrix24 lets you do, it’s still a great deal.

Again, free Bitrix24 can’t replace your normal phone system, since it’s limited to other users. Even so, its all-in-one business software is well worth looking at.

Get your business connected

RingCentral is our top VoIP choice for small businesses because of its unlimited domestic business phone and messaging, starting at just $19.99/mo.

  • Adaptable to your business needs from equipment rentals to toll-free numbers
  • Global infrastructure with an easy setup
  • Easy to scale and find a plan that works for you—regardless of your business’s size

Using free VoIP for business

As mentioned above, you can find free VoIP service―but that doesn’t mean it’s a good fit for your business. 

Before you sign up, we want to point out some factors you need to consider. After all, you don’t want to be like the scientists in Jurassic Park―y’know, “so preoccupied with whether or not [you] could, [you] didn’t stop to think of [you] should.”


As you may have noticed in our reviews up above, most free VoIP services won’t work well for the vast majority of calls. 

In fact, providers like Microsoft Teams, Skype, and Bitrix24 let you make calls only to other users of those services. That’s fine if you mostly want to simplify calls between your employees. But unless you can convince all your customers, all your vendors―and everyone else you communicate with―to use your VoIP app of choice, you’re going to need something to supplement your free VoIP.

And sure, Google Voice does give you unlimited calling in both the United States and Canada, including calling to mobile phones and landlines. But you’re only getting one line and one number. For many businesses, that won’t be enough for all the calls you have to handle.  

But calls aren’t the only use you need to think about.

Other features

You’ll also want to think about all the great VoIP features you’re missing out on by not using a paid service.

For example, many business VoIP providers offer ring groups―an easy way to make sure phone calls are going to the relevant people in your organization. They also offer scheduling rules, so you can change how your phone system works depending on the time of day or week. And then there’s auto attendants, or services that answer calls and direct customers to the right line.

And that’s just the tip of the VoIP software iceberg.

But when you go with a free VoIP service, you miss out on all that. You won’t get any of the features that make VoIP calling so great for business.


Then there’s compatibility to think about. Most free VoIP services do work on both mobile phones and desktop computers. You just need the relevant VoIP app―also called a softphone, or any software that lets you make calls with your internet connection.

But when it comes to desk phones, you’re out of luck. 

Paid VoIP services, on the other hand, usually offer compatible business phone systems. So sure, you can choose to use VoIP through an app on your cell or desktop computer―but you can also get dedicated desk phones for your business. That way, you can enjoy a more traditional calling experience, without being tied to a landline.


Finally, you need to consider the (lack of) availability of free VoIP.

There simply aren’t that many free VoIP providers for business out there. (Some providers that used to offer free plans, like DialPad, have ended those programs.)

In comparison, you have tons of options for paid VoIP service. That means you can compare providers to get great deals and great features. You don’t have to settle for whatever is available.

So in most cases, we really, really recommend you don’t try to make free VoIP work for your business. Instead, pay for a cheap VoIP plan.

Cheapest VoIP providers

Business VoIP doesn’t have to cost you that much. For less than $20 per month, you can get started with quite a few excellent VoIP service providers.

We’ve created a comprehensive guide to the cheapest VoIP providers for business, but you can take a quick look at some of our favorites in the table below.

Compare the cheapest VoIP service providers

Starting cost (per mo.)
Pricing type
Free trial?
Learn more
8x8$12.00Per user
Icon Yes  Dark1 mo.$9.99*Flat or per line
Icon No  Dark
Grasshopper$26* Tiered
Icon Yes  Dark7 days
Google Voice$0Per user
Icon No  Dark
RingCentral$19.99*Per user
Icon Yes  Dark15 days
1-VoIP$14.97Per line + per minute
Icon No  Dark
Vonage$14.99Per line
Icon Yes  Dark14 days
Dialpad$15.00Per user
Icon Yes  Dark14 days
Nextiva$17.95*Per user
Icon Yes  Dark30 days
Fusion Connect$19.95Per user
Icon No  Dark

Data effective 12/16/20. At publishing time, amounts, rates, and requirements are current but are subject to change. Offers may not be available in all areas.

*With annual billing

Aside from being affordable, you’ll also notice that some VoIP phone service providers offer free trials. For example, both 8x8 and Nextiva offer great free trials that let you test their VoIP technology for one month. 

So you can easily test out a new VoIP system before you start paying for phone service.


Can you get free business VoIP service?

You’ll have a hard time finding VoIP providers that offer free VoIP to businesses―and those that do don’t let you make phone calls to just anyone. Free business VoIP services are meant more for internal communications than for calling customers, vendors, or anyone else.

So if you want to use VoIP technology to replace your current business phone system, we strongly recommend going with a paid VoIP phone service. Otherwise, we think you’ll get frustrated by all the limitations you run into.

Can you get free personal VoIP service?

Yes, you can get free VoIP service for personal use. Google Voice, for example, offers free unlimited calling to landlines and mobile phones in the US and Canada.

Other free VoIP providers (like WhatsApp and Viber) offer calling only to other users of their service.

And do watch out for extra charges on your “free” VoIP service. Some providers that offer free VoIP service for your home (like Ooma) require pricey equipment in order to use their services.

How can I get a free VoIP number?

Most paid VoIP services come with at least one free VoIP number―as do some free ones, like Google Voice. You’ll be able to choose from available numbers when you sign up for phone service.

The takeaway

As we’ve said throughout this article, a free VoIP service probably won’t be a complete replacement for your old business phone system. But it can help you deal with specific communication needs―whether that’s internal team communication, fielding inbound customer service calls, or some other need.

With that in mind, one of the free VoIP providers above can supplement your existing phone system and keep your business connected. 

Want a VoIP service that can actually replace your old phone system? Take a look at our rankings of the best business VoIP providers.


At, our research is meant to offer general product and service recommendations. We don't guarantee that our suggestions will work best for each individual or business, so consider your unique needs when choosing products and services.

Chloe Goodshore
Written by
Chloe Goodshore
Chloe covers business financing and loans for She has worked with many small businesses over the past 10 years, from video game stores to law firms. Those years watching frustrated business owners try to sift through their many options gave her a passion for breaking down complex business topics. She wants to help business owners spend less time agonizing over their businesses so they can spend more time running them.
Recent Articles
RingCentral Video Propels Small Businesses
Disclaimer: RingCentral sponsored the creation of this article. However, we independently researched and authored all...
5 Best Business VoIP Providers in 2021
Looking to revamp your business’s VoIP phone service? We’ll cover our top VoIP picks and...
person dialing voip phone
8×8 VoIP Review 2021
8×8 VoIP’s main selling point is its integration of voice, video, chat, and application programming...
landline phone
Vonage VoIP Review 2021
Vonage provides tools to integrate with web browsers and business software, and provides round-the-clock support....