Written by Aimee Bradshaw Reviewed by James Macey Updated on November 21, 2023 On this page What are VoIP Phone Services and Systems? The Best VoIP Phone Systems 8x8 Express RingCentral Office Vonage Business Communications Zoom Phone GoToConnect Ooma Office Nextiva The Benefits of a VoIP Phone System How to Choose a VoIP Phone Services Provider How did we find the best business VoIP phone systems? Expert Verdict Expand Our site is reader-supported – by clicking our links, we can match you with a potential supplier, and we may earn a small commission for this referral. Our rigorous research has found that 8×8 is the best VoIP provider in the market. We think it's a great all-round solution because of its great security measures, 24/7 support, and easy scalability. While it's more expensive to other providers on this page, we think it's a worthy investment.Every VoIP provider on this page is suited to a specific need so keep reading to find one suited to your business.Alternatively, if you're short on time, you can use our quick and free quote-finding tool. In exchange for a few details about your business, we'll connect you with the providers that can tick off the right boxes in your VoIP wishlist. The 7 Best VoIP Phone Systems These are the providers we recommend based on our research. Use our comparison tool to find the best service for your business.8×8 Express – Best All-Round VoIP Provider in the USRingCentral – Best VoIP Provider For Customer Service TeamsVonage Business Communications – Best VoIP Provider For Small BusinessesZoom Phone – Best For AffordabilityGoToConnect – Best VoIP Provider For StartupsOoma Office – Best VoIP Phone System For Enterprise BusinessesNextiva – Best VoIP Phone System For Flexible Set Up What are VoIP Phone Services and Systems?VoIP stands for Voice over Internet Protocol and is a telephone system that uses an internet connection to make and receive calls, without the need for traditional landlines or physical wires.Because it's run over the internet, these phone systems aren't limited to a specific desk or area, so you can make calls via your laptop or smartphone from anywhere in the world.VoIP phone systems are more affordable compared to traditional landlines and have much higher audio quality. Because the phone lines are virtual, businesses can quickly scale up or down without needing to install or remove lines. With hybrid and remote working being the norm, VoIP systems allow businesses to run smoothly no matter where your team is. The Best Business VoIP Phone SystemsAccording to our detailed research, the following suppliers offer the best VoIP phone systems available in the US in 2023: Swipe right to see more 0 out of 0 backward forward 8×8 RingCentral Vonage Zoom Phone GoToConnect Ooma Nextiva Expert Rating 4.7 Expert Rating 4.7 Expert Rating 4.5 Expert Rating 4.5 Expert Rating 3.2 Expert Rating 4.3 Expert Rating 4.3 Price Custom Price $20 per user, per month – $35 per user, per month Price $19.99 – $39.99 per user, per month Price $10-20 per user, per month Price $27 – $32 per user, per month Price $19.95 – $29.95 per user, per month Price $18.95 – $40.95 per user, per month Domestic Calls Unlimited Domestic Calls 1000 inclusive inbound minutes 2000 outbound minutes per user Domestic Calls Unlimited to domestic landlines Domestic Calls Unlimited inclusive inbound and outbound minutes Domestic Calls Unlimited Domestic Calls Unlimited Domestic Calls Unlimited International Calls Unlimited to 14 countries International Calls N/A International Calls N/A International Calls N/A International Calls Free international calling to 50+ countries International Calls N/A International Calls N/A Key Features Onboarding supportCall queueRing groupsAnalyticsCustomizable call routingCall recording Key Features Voicemail to textHigh-definition (HD) voiceMulti-level auto attendantVisual voicemail and voicemail to email Key Features Onboarding supportCall queueRing groupsCall recordingCall monitoringAnalyticsWeb conferencing Key Features Impressive offer of inbound communication featuresCompetitive price pointLots of management features Key Features Call barge*Call whisper*Call recording*Analytics*CRM, Helpdesk, web conferencing integrations Key Features Virtual receptionistRing groupsMusic on holdOne toll-free number Key Features Unlimited calling within the US and CAFree local and toll-free numberVoicemail to email notificationsAuto attendantBusy lamp fieldHold music Try 8x8 Try RingCentral Try Vonage Get free quotes Get free quotes Try Ooma Get free quotes Why Can You Trust Expert Market for VoIP System Recommendations? The Expert Market team is made up of researchers, writers, and editors dedicated to rigorous and unbiased testing. With product led research and expert analysis, we provide specialised recommendations to readers so you can make an informed decision.We've tested 11 different VoIP phone systems across a range of research areas including price, features, and customer support. Each VoIP system has been rigorously tested against each area and scored to find the best system on the market. 1. 8×8Best All-Round VoIP Provider in the US 8x8 4.7 Pricing $24 -$140 per user, per month Get free quotes 8x8 review Quick overview Founded in 1987, 8x8 is one of the biggest providers of cloud-based communication solutions, with over one million users worldwide. Over the years, 8x8 has made several strategic acquisitions to expand its portfolio. In 2018, it acquired the open-source technology Jitsi, enhancing its ability to offer versatile communication capabilities. In 2020, 8x8 acquired callstats.io, a Finnish startup that provides SaaS call quality monitoring for popular communications apps. Read more + Read less - Strengths 24/7 support Multiple compliance certifications + multi-factor authentication Easy to scale Weaknesses Premium pricing Mediocre consumer review score Pricing See more See less PlanPrice (per user, per month) X2 $24 X4 $44 X6 $85 X7 $110 X8 $140 Our detailed research has shown that, overall, 8×8 is the best VoIP provider for US businesses. It scored incredibly well in a number of our research categories, including features, security, customer support, and scalability, and scored 4.7/5 overall – our highest rating.In particular, we love the breadth of features available on 8×8’s plans. As you’ll see in our key features analysis below, from the X2 plan upwards, 8×8 boasts all the features we know to be most important for productive comms with customers and clients – from unlimited minutes and local numbers to ring groups, call queues, and CRM integrations. It is also compatible with a range of plug-in-and-play desk phones.8×8’s security features also impressed us, earning the provider a score of 5/5 in this category. With multiple compliance certifications, multi-factor authentication, password rules, and TLS/SRTP encryption, 8×8 does a lot to ensure your company’s calls and data are kept under lock and key.Finally, as a result of our research, we can tell you that 8×8 offers a really good level of customer support (it also scored 5/5 here) – something any provider must do before we could reasonably call it the best! 8×8 has a user forum and a knowledge base to peruse, and a 24/7 live chat function and phone line for those out-of-hours issues. Email support is also available for your less time-sensitive queries. Compare and save! Get free quotes from trusted phone system providers with our quote comparison tool. Get free quotes 2. RingCentralBest VoIP Provider For Customer Service Teams RingCentral 4.7 Pricing $20 - $35 Get free quotes RingCentral review Quick overview With its innovative collaboration solutions, RingCentral empowers businesses to connect, seamlessly with their customers, teams, and partners. Founded in 1999, RingCentral has established itself as a trusted partner for businesses of all sizes, offering reliable, user-friendly, and flexible communication solutions. In 2021, RingCentral was announced as Mitel's exclusive unified communications partner, providing its cloud-based software to Mitel's customer base of over 35 million users. Read more + Read less - Strengths 24/7 customer support for users Highly scalable High uptime guarantee Weaknesses Mediocre consumer review score Prices are a touch on the expensive side Pricing See more See less PlanPrice (per user, per month) Core $20 Advanced $25 Ultra $35 Scoring 4.5/5 overall in our research, RingCentral is a close second to 8×8. However, it’s less of a solid all-rounder and more of an excellent option for customer service teams specifically.Customer service teams have to deal with a lot of incoming calls. RingCentral boasts a great range of features to help make light work of this, including a virtual receptionist, local toll-free numbers, and customizable greetings and hold music on all of its plans. Upgrading to a Premium or Ultimate plan will also enable you to set up ring groups and call queues, to organise your callers even more smoothly. RingCentral also comes with external video calling and SMS features, giving your customers more ways to get in contact with your team.Of course, training is hugely important in the world of customer service – your team’s phone manner has to be great, after all. RingCentral comes with features that can help with this, including call transcripts, call recording, call monitoring, call whisper, and call barge. Be wary, though, that RingCentral’s cheapest packages don’t offer all of these, so you’ll have to pay a little more for the full breadth of training and monitoring tools.Finally, it’s worth knowing that RingCentral comes with ready-made integrations with helpdesk, workspace, email, conferencing, and messaging platforms to help unify your comms and easily hold customer data. Once again, though, most of this is only available on RingCentral’s Premium and Ultimate plans. What's new for RingCentral? November 2023 RingCentral has announced RingCentral Events, a service to help businesses elevate their virtual, onsite, and hybrid events Did You Know? Around 82% of firms have recorded cost savings after moving to cloud communication 3. Vonage Business CommunicationsBest VoIP Provider For Small Businesses Vonage 4.5 Pricing $19.99 - 39.99 Get free quotes Vonage review Quick overview Vonage is a trusted partner for businesses looking for user-friendly and innovative communication solutions. Founded in 1998 as Min-X, its original goal was to provide residential VoIP (voice over internet protocol) phone services. Now, it has expanded its cloud-based services to include virtual phone systems for businesses, and advanced communications APIs.In July 2022, Vonage was acquired by multinational telecommunications company Ericsson, which employs around 100,000 people. It’s headquartered in Holmdel Township, New Jersey. Read more + Read less - Strengths Integrates with tons of CRM software Easily scalable All plans include 24/7 live support Weaknesses Limited security options Missing some important outbound communication features Pricing See more See less PlanPrice (per user, per month) Mobile $19.99 Premium $29.99 Advanced $39.99 Vonage is our top choice for small businesses for a number of reasons. Firstly, it offers excellent value for money (in these stakes, it was beaten only by GoToConnect, our top pick for startups), with plenty of features, including unified communications tools such as video conferencing and team messaging, available even on Vonage’s cheapest plans. Unlimited domestic minutes only kick in on the Professional and Ultimate plans but, as you’ll see, these packages are still very affordably priced. We know small businesses are often looking for pathways to grow, so it’s great that Vonage did very well in our scalability comparison, scoring 4.5/5 on this front. The ring group, call queue, and call routing features on Vonage’s more advanced plans will help your team handle growing volumes of calls, while call recording, monitoring, and analytics will help you train new staff and ensure the quality of your business’s comms is top notch. There’s also the fact that Vonage allows an unlimited number of users on all of its plans, so you won’t be forced to pay for an upgrade once your team hits a particular size.Small businesses should also feel reassured by the decent level of support Vonage offers to its users, including a user forum, a knowledge base, and live chat, email, and phone support (though you should be aware that these lines aren’t open 24/7). Vonage’s 99.999% uptime guarantee means it’s unlikely your all-important income will be unexpectedly impacted by downtime. 4. Zoom PhoneBest For Affordability Zoom Phone 4.5 Pricing $10 - 20 Get free quotes Quick overview Zoom Phone was launched in 2019 as an extension of Zoom's services. It offers features such as inbound and outbound calling, voicemail, call recording, and integration with other Zoom products. By 2022, less than four years after its launch, it had sold four million seats.Zoom Phone’s global coverage – 88 countries and counting – and flexible Bring Your Own Carrier (BYOC) option make it ideal for multinational organizations. Read more + Read less - Strengths Offers the best value for money Cheapest price plans of all the providers we researched Excellent customer reviews and ratings Weaknesses Limited user support channels Below-average security features Pricing See more See less PlanPrice (per user, per month) Metered $10 Unlimited $15 Select $20 Scoring a perfect 5/5 for price in our research, Zoom Phone is a feature-rich and affordable solution. With plans that cost $10, $15, and $20 per user per month, it’s a solid choice if you’re looking for a functional VoIP system that won’t stretch out your wallet. The good news is that despite its low cost, it doesn’t compromise on features. Scoring a 4/5 for features in our research, you can use any inbound communication and conversation feature. It outcompetes others like Ooma and Nextiva that have a more restricted menu of features.However, Zoom isn’t great for security. Scoring a 2/5 in this category in our research, Zoom misses out on multi-factor authentication, password rules, and user-permissions. Therefore, we'd recommend looking at GoToConnect, RingCentral, or 8×8 if you're keen to keep your unified communications operation safe from unwelcome attention. 5. GoToConnectBest VoIP Provider For Startups GoToConnect 4.3 Pricing $27 - $32 Get free quotes GoToConnect review Quick overview GoTo offers a range of cloud-based products – including GoToConnect, its VoIP system – designed to help businesses work and collaborate more efficiently and securely from anywhere. Founded in 2003 and based in Boston, Massachusetts, GoTo was formerly known as LogMeIn Inc. before its rebranding in 2022.With tens of millions of users, over $1.3 billion in annual revenue, and a global workforce of more than 3,500 employees, GoTo is one of the largest SaaS companies in the world. Read more + Read less - Strengths Very easy to scale Glowing reputation among users Offers fantastic value for money Weaknesses No 24/7 user support channels Few ready-made integrations Smaller variety of features Pricing See more See less PlanPrice (per user, per month) Basic $27 Standard $32 GoTo’s phone system, GoToConnect, is our favourite VoIP system for startups. When you’re starting a business, you have to make sure you’re getting as much as you can for as little money as possible. During our research, GoToConnect was our top scorer in the category of value for money, earning 4.5/5 – so it’s a good bet if you’re looking to secure helpful features like unlimited domestic minutes and multiple communications channels (such as phone, video chat, and messaging) for a relatively small price tag.As your startup accrues a customer base, you’ll need a VoIP system that can help you communicate with potential customers and clients as professionally as possible. With GoToConnect, you can set up a virtual receptionist, customizable on-hold music, recorded greetings, and voicemail capability to give callers a polished experience when they get in touch. You can also set up local numbers, so customers don’t have to pay to phone you. Better still for budget-conscious new businesses, these features are all available on GoToConnect’s cheapest package.Of course, it’s likely that you won’t stay at startup size forever. Fortunately, GoToConnect’s unlimited user limit and available call management features mean it’s a scalable system – it earned a scalability score of 4.4/5 in our analysis. What's new for GoToConnect? November 2023 GoToConnect has announced over 60 features that help with security, integrations, and automation Answer a few questions to be matched with top VoIP suppliers, who'll provide quotes tailored to you Get free quotes 6. Ooma OfficeBest VoIP Phone System For Customer Satisfaction Ooma Office 4.3 Pricing $19.95 - $29.95 Get free quotes Ooma Review Quick overview Ooma is a cloud-based communications provider based in Sunnyvale, California. It offers advanced phone, video, and messaging solutions that are customizable for businesses of any size and home phone services for residential customers. In 2023, Ooma won PC Magazine's Business Choice award for the top VoIP service for offices for the tenth year in a row. The company was founded in 2004 and has grown to serve over one million users. Read more + Read less - Strengths Offers dependable customer support 24/7 50+ call features such as call conferencing and call flip Rave reviews from users Weaknesses Limited collaboration features Weak security and authentication service Pricing See more See less Enterprise Standard $19.95 Enterprise Enhanced $24.95 Enterprise Call Center $29.95 Ooma scores a 4.4/5 when it comes to its customer score. This isn't the absolute highest score, but when you average it out with the rest of its offering, Ooma looks to be a very promising investment for those who need a bit of help. Scoring an overall 4.3/5 and a solid 4.1/5 for features, Ooma Office is one of the most affordable business VoIP phone system packages for large companies that we’ve come across. It includes video meetings and softphone apps for all your employees, and can be customized to meet the varying needs of your different teams. Ooma can be integrated with a variety of productivity tools (like G Suite) and CRM platforms, so you can keep all your important activity in one place.The significant downside to Ooma is that its security offering isn’t great. Scoring a 1/5 for security in our research, Ooma misses out on multi-factor authentication, password rules, and user permissions. If security is at the top of your list, we’d recommend turning to 8×8 or RingCentral. It also falls short on some fairly simple features, like call transcripts, call monitoring, and team messaging/document sharing, which can be useful for those looking to document everything. Did You Know? Businesses can save 90% of their funds allocated for communication on international calls using VoIP services 7. NextivaBest VoIP Phone System For Flexible Set Up Nextiva 4.3 Pricing $23.95 - 37.95 Get free quotes Nextiva review Quick overview Founded in 2006, Nextiva is a connected communications company that offers a comprehensive suite of tools and services to help businesses thrive. With a focus on smart and efficient communication, the company provides VoIP phone services, video conferencing, text messaging, and CRM software to more than 100,000 businesses. In 2022, Nextiva ranked #2 on Comparably.com's list of the best places to work in Phoenix. This is based on anonymous employee sentiment, which demonstrates Nextiva's dedication to fostering a positive work environment for its staff. Read more + Read less - Strengths Excellent customer service Rich set of features Weaknesses Not easily scalable Limited ready-made integrations Pricing See more See less PlanPrice (per user, per month) Essential $18.95 Professional $22.95 Enterprise $32.95 Nextiva is pretty flexible when it comes to set up as it boasts its own first-party hardware and is compatible with third-party desktop phones like Cisco, Yealink, and Polycom. This is particularly useful if you have a preference for having a desktop phone as part of your VoIP system. Although others, like Ooma, also offer first-party desktop phones, Nextiva strides ahead because it has a wider range of third-party desktop compatible phones.With a 99.999% uptime guarantee, 24/7 Live Support, live chat, and onboarding support, we like Nextiva because of its expansive customer support – our researchers also gave it an excellent 4.5/5. So you can be confident in knowing that if you crash into trouble when using your VoIP system, Nextiva’s customer service will be there to help. However, when it comes to security, Nextiva doesn't perform too well. Scoring an all-right 3/5 in this category in our research, you miss out on multi-factor authentication and password rules. You're better off turning towards 8×8, GoToConnect, or RingCentral if you want to have more peace of mind. Compare free quotes from the best business VoIP phone systems Do you already have a VoIP phone system? Yes No Simply answer a few questions about your business – it only takes a minute The Benefits of a VoIP Phone SystemSo, why invest in a VoIP phone system for your business? There are plenty of reasons to do so, but these are the most impactful:1. Cheaper CallsBecause VoIP systems make and take phone calls over the internet, those calls end up costing a lot less than those made over traditional phone lines. In fact, most VoIP system suppliers include free unlimited calls within the US and Canada as part of their price plans, so you won't have to pay extra for them.Some – but not all – VoIP suppliers also let you make international calls for free. If yours doesn't, don't worry – international calls made over the internet are still cheaper than those made traditionally.2. Flexibility and MobilityCloud-based VoIP systems can be accessed from anywhere, on any device (cell phone, tablet, laptop, or desktop) that has an internet connection and the system app installed. So, whether your staff are based in the office, working from their own homes, or travelling, they'll be able to make and take business calls, and access the UC features your system includes, like video chat and instant messaging.3. Easier ScalabilityWith a VoIP phone system, you won't need to pay for additional phone lines or hardware as your team grows. All you need to do is add more users to your VoIP system and have them download the system app onto their devices. That said, you can use IP desk phones rather than cell phones if you prefer – just contact your VoIP system supplier and they'll provide what you need.4. Better Sound QualityYou've probably heard that the sound quality on VoIP calls is pretty bad. After all, when VoIP first started to be adopted on a large scale, that was very much the case. But now, advancements in the technology – for example, IP phones being fitted with noise-cancelling microphones – mean that VoIP call quality is usually fantastic.As long as you have a reliable internet connection with plenty of bandwidth, you can expect your VoIP calls to be crystal clear. In fact, you can usually count on them sounding even better than calls made via the traditional phone network.5. Sophisticated FeaturesAs we've explored in our list of the best business VoIP phone systems, these solutions come with a variety of features designed to make your working life more streamlined and give your customers and clients a friendly and professional experience when they call your business, no matter how big or small it is. How to Choose a VoIP Phone Services ProviderWith seven providers on this page, it can be difficult to determine which VoIP provider is right for your business. Here are the most important factors to take into account when choosing your VoIP provider:PricingThe cost of a VoIP system is typically determined by the number of users as providers tend to charge per user, per month. Providers also offer different tiers to match the needs of your business. The more expensive a tier, the more comprehensive it is.To lower pricing, you can:Choose a provider with a low price per userChoose a lower-priced tierPay annually as the per-user fee is usually lowerHere are some questions to ask when deciding between an expensive and cheaper option:What features does your business need? This will help you determine which tier is best for you.How good is the service and support? Checking out what our research has to say about the provider's research or searching up customer reviews online will help you figure out how reliable the support it.Uptime Guarantee and Call QualityAn improved call quality is one of the reasons businesses switch to a VoIP provider so you want to make sure the system you choose is high quality. There are a number of factors that can affect call quality including the strength of your internet connection, hardware, and Quality of Service.When choosing your VoIP system, check the uptime guarantee for the provider as this is the provider's promise to offer a certain level of call quality and uptime.Key VoIP FeaturesHere are some of the most important features you want to look for in a VoIP system:Call conferencing: this allows for smooth collaboration and remote workingCall queue: this helps ensure your customers are directed to the right agent and keeps them on hold until they're availableIntegrations: if your business uses software such as a CRM system, being able to integrate it with your VoIP system will provide a smoother experience for your customers and agents24/7 live support: a lot of VoIP providers will offer 24/7 live support which is key to ensuring continued high-quality calls Answer a few questions to be matched with top VoIP suppliers, who'll provide quotes tailored to you Get free quotes How Did We Find The Best Business VoIP Phone Systems?Our team of independent researchers has conducted an in-depth dive into the eleven most used and best-rated business VoIP system suppliers on the market. The eleven providers have been tested in seven main category areas, across 16 subcategories, for a total of 78 areas of investigation.We tested each provider in the following areas:Customer score: this refers to external customer reviews and ratings.Cost: we weighed up the cost of each provider including the monthly subscription, setup fees, and hardware.Features: we tested the comprehensiveness of the features each provider offers.Customer support: refers to the extent of the customer support offered by the provider.Scalability: we tested each system's ability to support your business scaling up or down.Regardless of which choice you make to meet the demands of your business, our research-backed recommendations will match you with the top players in the VoIP market.The Expert Market Product Testing Process Verdict Offering a dazzlingly comprehensive range of features alongside top notch security measures and customer support channels, as well as excellent scalability, our research has revealed that 8×8 is the best VoIP provider in the UK. RingCentral comes in close second, and is our top pick for customer service teams. Both of these providers score an overall 4.7/5 in our research – the highest score we gave out.But if you're still looking for help in choosing the best VoIP provider for your team – we know, all these choices can be overwhelming – our free quote-finding tool can help. Simply tell us a little about your business, and we'll match you up with the best VoIP providers for you. They'll then be in touch with tailored, no-obligation quotes. It's a quick and easy way to compare the right options for you. FAQs What is hosted VoIP? With hosted VoIP, the infrastructure is based ‘in the cloud’ rather than on your premises. A service provider owns, manages and maintains the infrastructure in a secure data centre. You pay a monthly fee to use the service. Most businesses find hosted VoIP to be the best option as it’s so easy and low-maintenance. Which VoIP provider has the cheapest plan? Currently, the cheapest VoIP subscription you can get your hands on is Zoom Phone's Metered plan. For only $10 per user, per month, you can have a functional unified communications system up and running! Is VoIP cheaper than landline? Absolutely! VoIP phones are cheaper because they don't require the maintenance costs that landlines are burdened with. Therefore, if you're looking to get more value from your communications budget, we'd strongly recommend transitioning to VoIP. Is VoIP good for small businesses? Definitely! VoIP allows your small business to sync all your unified communication channels under one roof, which helps you cut down on costs and logistical headaches. The right VoIP system will also be highly scalable, which is a massive plus for growing small businesses who are wary of outgrowing their software and hardware. What are the disadvantages of VoIP? Although VoIP is a really functional software to have as part of your operation, it does come with some downsides. You need to have a stable and reliable internet connection for it to work, and VoIP doesn't give you location tracking for emergency calls. However, these are small risks to run when you think about all the benefits you get with a cloud communications system. Written by: Aimee Bradshaw Writer and researcher Aimee is Expert Market’s resident telephone systems and point of sale go-to. If she’s not writing about business products, you’ll find her daydreaming about dog walking on Dorset beaches. Reviewed by: James Macey Senior Business Software Researcher James thinks all businesses can improve if they use the right technology. At Expert Market, he utilises his 4+ years experience as a researcher to offer specialised advice on a wide range of categories from CRM to Fleet Management.