For businesses, it is no longer a luxury to stay connected across the globe; rather, it’s a necessity. For UK businesses that serve customers or have staff and suppliers based overseas, the cost of traditional phone lines can be startling and unpredictable.
This is where you can use VoIP service providers with international calling plans. With VoIP (Voice over Internet Protocol) technology, you can make calls using the existing internet service at your home or office, avoiding the high cost of traditional international phone rates.
However, finding the perfect VoIP provider can be overwhelming; with so many choices available, how can you select a provider that is dependable, affordable, and offers all the features your business needs?
This guide has all the answers you need. We compared the best VoIP service providers for international calling based on their pricing, call quality, and global reach. By the end of this, you will be able to find a provider that matches your needs.
What Is VoIP International Calling?
Making international calls with VoIP is essentially the process of using internet service to make or receive both local and international calls.
Your voice is converted to data packets instead of being transmitted over copper lines that are dedicated to this purpose and owned by a telephone company. These data packets are then sent over the internet, the same road used by your emails and web browsing; once they reach the other end, they become sound again.
The most important advantage of using VoIP for international calling is its low cost. As VoIP providers utilise the internet to connect calls, they are able to provide international calling fees that are far cheaper than traditional phone services.
In addition, VoIP offers compelling functionality for businesses, such as virtual phone numbers, auto-attendants, easy call forwarding to any device and integration with your tools. All of these features have made VoIP service providers for international calls a valuable resource, not only for cost savings but also for the development of a more professional, flexible, and collaborative business.
If you want to learn more about the difference between landline phones and VoIP, see our guide: VoIP vs Landline Phones: Which is Best For Your Business?
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Top 7 VoIP Service Providers for International Calling: A Quick Overview (Table)
Before we get into the details, here is a quick overview of top VoIP service providers for international calling:
| Provider | Best For | International Calling Features | Starting Price |
|---|---|---|---|
|
Ringover |
Startups and SMBs |
Simple, flat-rate pricing to 110+ countries |
£15/user/month |
|
Zoom Phone |
Teams already using Zoom ecosystem |
Seamless integration with Zoom Meetings |
$15/user/month |
|
8x8 |
Businesses with global reach |
Great unified communication platform |
Contact sales team |
|
RingCentral |
Mid-sized to large enterprises |
Extensive features, reliability and scalability |
$20/user/month |
|
Nextiva |
Customer service-focused businesses |
Premium call quality and reliability |
$15/user/month |
|
Mitel |
Large complex organisations |
Experience with on-premises and cloud hybrid |
Not available online, you will have to contact the sales team |
|
Ooma |
Small businesses |
Easy to use and predictable flat-rate pricing |
$19.95/user/month |
If you want to compare more reputable VoIP providers, use ComparedBusiness UK. We have a pool of reputable VoIP service providers for international calls; all you need to do is give us some details, and we will match you with the right VoIP provider.
If you want to compare VoIP providers for your business, see our guide: Compare Best VoIP Providers For Business In UK
Details Of Top 7 VoIP Service Providers For International Calling
Let’s dive into detail about the top VoIP service providers for international calling:
1. Ringover
Overview:
Ringover is a communication solution that intelligently integrates a business phone system with team messaging and video conferencing. It is designed for agility; you can set it up and make calls within minutes.
For enterprises in search of a VoIP service for international calling, Ringover offers incredibly simple and inclusive pricing that covers many destinations.
Key Advantages:
- All-Inclusive International Calling: Ringover in their pro plan offers unlimited calls to 110+ countries, which covers most primary business destinations.
- Quick Setup: You can obtain a phone number and have your team signed up in no time.
- Integrated Collaboration: Your phone system app includes messaging, video conferencing, and screen sharing.
Key Disadvantages:
- Expensive High-Volume Plans: The more users you need, the less favourable the pricing becomes.
- Brand Name: Not as well-known as certain traditional service providers in the market.
Pricing:
- Quicktalk: £15/user/month
- Smart: £17/user/month
- Business: £29/user/month
Best For:
Ringover is ideal for small businesses and startups seeking a simple, comprehensive solution for international calling that doesn’t require lengthy contracts.
2. Zoom Phone
Overview:
Zoom Phone is an easy-to-use system for millions of teams that already rely on Zoom for video conferencing. It works seamlessly with Zoom Meetings to provide businesses that are already part of the Zoom ecosystem an integrated experience.
It gives you seamless integration across voice calls, video meetings, team chats, and all the other Zoom Workplace tools. For companies that prioritise video-first communication and also need a reliable phone system, Zoom Phone naturally extends their existing set of solutions.
Key Advantages:
- Frictionless Integration: If your team is already using Zoom, switching to Zoom Phone calls is seamless. Switch easily from call to meeting with one click.
- Worldwide Phone Numbers: Access to local numbers in 40+ countries, which is great for building a local market presence.
- Easy Management: Admin features can be accessed in the same Zoom web portal that is used to control meetings.
Key Disadvantages:
- International Add-Ons: Unlimited calls are just for a single country of your choice, and international calls are added as an optional add-on.
- Feature Dependency: Only works best when you are already in the Zoom ecosystem.
Pricing:
- UK & IRL Unlimited: $15/user/month
- Pro Plus: $18.41/user/month
- Business Plus: $22.49/user/month
Best For:
Businesses that are already using Zoom Meetings and are looking to integrate most or all of their communications within a single, highly familiar platform should consider this option.
3. 8x8
Overview:
8×8 is a well-established platform in the VoIP industry. It is a full-featured solution, not just limited to voice but also offering contact centres, analytics, and team messaging all within one solid international framework.
Key Advantages:
- Truly International Platform: Ideal for an international team spread across the globe with no change of service or feature set across regions.
- Advanced Analytics: Get in-depth visibility into call volumes, how well agents are performing and trends in communication.
- Contact Centre Ready: Top-tier plans come with advanced contact centre features, which makes 8×8 an excellent all-in-one solution.
Key Disadvantages:
- Complicated Pricing: The features you get in each plan can be confusing to navigate for smaller businesses.
- Interface: The admin portal, although powerful, can be slightly difficult to learn.
Pricing:
You will have to contact their sales team for a quote.
Best For:
This solution is ideal for medium- and large-sized businesses, as well as those with international contact centres or distributed global teams that require deep analytics.
4. RingCentral
Overview:
RingCentral is the market leader and powerhouse when it comes to professional business communication. It provides extremely robust and feature-rich systems (RingCentral MVP) that grow from a few users to tens of thousands. For companies looking for the best VoIP providers for international calls, it’s often a great choice.
Key Advantages:
- Extensive Features: You get all the features you could think of, including advanced call handling and unlimited third-party integrations.
- Reliable: It is dedicated to maintaining the trust of its users by providing secure, private, and reliable services.
- Powerful Mobility: The RingCentral mobile app is considered to be one of the best, converting your smartphone into a fully functional office extension.
Key Disadvantages:
- High Cost: It’s one of the pricier products on our list, though you get what you pay for.
- Potential for Bloat: SMEs can get overcharged for features that are not ready to use.
Pricing:
- Core: $20/user/month
- Advanced: $25/user/month
- Ultra: $30/user/month
Ideal For:
RingCentral is ideal for medium- or large-sized firms that require an extendable, dependable, and full-scale communication platform with international accessibility.
5. Nextiva
Overview:
Nextiva has a strong foothold in the US and is increasing its traction in the UK. People praise Nextiva for its exceptional customer service, user-friendly interface, and exceptional call quality. It combines phone calls, video conferencing, and team chats on a single platform.
Key Advantages:
- Great Sound Quality: As pointed out often in its reviews, Nextiva has great sound quality for phone calls.
- Exceptional Customer Support: Has the most responsive and helpful customer service, which is a huge advantage.
- User-Friendly Design: Both the user and admin interfaces are modern, intuitive, and easy to use.
Key Disadvantages:
- Global Focus: It’s great, but its presence in international calling plans and global numbers isn’t as comprehensive as competitors such as 8×8 or RingCentral.
- Pricing Transparency: There is a lot of promotional pricing, so be sure to verify the standard price after your contract expires.
Pricing:
- Core: $15/user/month
- Engage: $25/user/month
- Power Suite CX: $75/user/month
Best For:
This service is best for SMBs that value call quality and solid customer support, particularly those focused on the UK and core international markets.
6. Mitel
Overview:
Mitel is a telecom industry veteran that has been around for decades and is best known for on-premise hardware solutions. With MiCloud Connect, it has made a successful transition to the cloud. This lineage is an attractive option for larger, more complex organisations with legacy platforms or regulatory requirements.
Key Advantages:
- High-Level Security and Compliance: It is committed to enterprise security and regulatory compliance.
- Industry Solutions: It provides specialised solutions for industries such as healthcare, hospitality, and education.
- Hybrid Deployment Specialists: Unique capabilities combining cloud and on-premises phone systems, allowing you to move at your own pace.
Key Disadvantages:
- Less Agile for SMBs: The systems may be complex for a small, straightforward business structure.
- Custom Pricing: Simple, public pricing is not available; you will have to go through a sales cycle for a quote.
Pricing:
It offers custom quotes, so you will have to contact their sales team.
Best For:
This system is ideal for organisations seeking highly customised, secure, and scalable solutions, such as large government enterprises or regulated industries.
7. Ooma
Overview:
Ooma is a VoIP provider aimed at consumers and has an excellent small business offering. It is known for its simple setup and the extremely predictable flat-rate pricing that comes with tonnes of features.
Key Advantages:
- No Hidden Fees: The monthly price listed is the final all-inclusive price for standard features with no hidden charges.
- Simple Physical Setup: The physical setup is very simple to use.
- No Long-Term Contracts: Provides a little more flexibility than most of its competitors.
Key Disadvantages:
- Lagging Interface: The web and mobile interfaces are older than their cloud-based counterparts.
- Limited Advanced Capabilities: The platform lacks deep analytics, custom integrations, and contact centre tools that are available in larger platforms.
Pricing:
- Essential: $19.95/user/month
- Pro: $24.95/user/month
- Pro Plus: $29.95/user/month
Ideal For:
Small businesses, sole traders, and offices seeking a reliable phone system with straightforward pricing and minimal restrictions should consider this option.
If you want to compare VoIP providers for healthcare, see our guide: VoIP for Healthcare Providers | NHS Compliant VoIP Systems
Key Features To Look For In VoIP Service Providers For International Calling
When you are looking for VoIP service providers for international calling, it’s not just about the price. Here are some key features that you should consider:
- Clear International Rates: Do all plans offer unlimited minutes to your primary countries, or do they operate on a pay-as-you-go basis? Be wary of any per-minute rates and other connection or maintenance fees. Most reputable VoIP providers have clear packages with no hidden fees.
- Call Quality and Reliability: Go with those who offer 99.99% uptime and tier-1 carrier networks. Quality of Service (QoS) controls and inherent redundancy are indicators of a stable network.
- Global Number Availability: Are you able to obtain local numbers for the countries where you receive calls or conduct business? This gives a professional local presence and can save money for your international contacts.
- Business Continuity: Make sure the system is capable of handling internet breakdowns. Calls should revert to mobiles automatically if the internet goes down, and the voicemail-to-email feature should also be there.
- Professional Business Features: Professional features include an auto-attendant, call routing, hold music, conference calling and easy-to-use mobile apps.
- Integration: The phone system must integrate with your existing tools. Look for integrations with your CRM (such as Salesforce or HubSpot), helpdesk software, email platforms, and collaboration tools (such as Microsoft Teams or Slack).
Learn more about the cost of VoIP phones in our guide: How Much Does a VoIP Phone Cost in 2026? Hidden Fees, Setup Costs & More!
Advantages Of Using International VoIP Providers For Businesses
The switch to a dedicated VoIP service provider for international calls offers various advantages:
- Immediate Cost Savings: This is the key benefit. Put an end to per-minute charges with predictable monthly calling plans.
- Unified Communications: Combine your phone system, video calls, messaging and file sharing with one app. This reduces app switching, streamlines billing and increases team productivity.
- Unparalleled Flexibility and Scalability: Enable employees to work from anywhere with an internet connection using a mobile app. Moreover, it is simple to add or remove users in an admin portal, so you can scale as your business grows.
- Advanced Features: Get the functionality of expensive features, such as call analytics, call recording for training, advanced routing, and full CRM integration.
Find The Best VoIP Service Providers For International Calling With ComparedBusiness
Finding the ideal VoIP service provider for international calls is not as easy as it seems. You will have to go through each detail of multiple providers to find the perfect solution. But with ComparedBusiness UK, you won’t have to worry about anything.
ComparedBusiness UK does all the work for you and finds you the ideal VoIP provider that matches your business needs. Submit your requirements, and we will provide you with quotes from the leading VoIP providers.
FAQs
The setup is extremely simple; there is no installation of physical phone lines. Users will usually need to install an app on their computer or mobile device and start using the system.
Most reputable VoIP providers are transparent. Before you sign the contract, be sure to enquire about the one-time setup fees, prices for physical desk phones, shipping and handling charges for physical units, and the pricing of international numbers.
Many of the top VoIP providers have continuity features included in their service plans. Calls are automatically directed to mobile or any other specified number. Voicemails are transcribed and emailed to you, so you never miss international callers.
