VoIP (Voice over Internet Protocol) is more than just a cost-effective way to make calls. For scaling businesses, it provides seamless communication, enhanced collaboration, and the flexibility to grow without being tied to traditional phone systems. Whether you’re a startup aiming for rapid expansion or an established company scaling operations, the right VoIP provider can be a game-changer.

We’ve analysed the competition to bring you the six best VoIP providers that support business growth. These platforms offer scalability, advanced features, and seamless integrations to streamline operations and enhance customer interactions.

• RingCentral: Best all-in-one scalable solution
• Nextiva: Best for customer-centric operations
• Vonage: Best for international expansion
• Dialpad: Best for AI-driven efficiency
• bOnline: Best for budget-conscious startups
• Virtual Landline: Best for remote and hybrid teams
• 8×8: Best for AI-powered customer experience

---

1. RingCentral: The all-in-one scalable solution

Pricing:

• Essentials: £12.99 per user/month
• Standard: £19.99 per user/month
• Premium: £24.99 per user/month
• Ultimate: £29.99 per user/month

Why it’s great for growing businesses:

RingCentral is a top choice for growing businesses that need an all-in-one communication platform. With cloud-based PBX, high-quality voice and video calling, and unlimited messaging, it eliminates the need for costly hardware. Its extensive integrations with Microsoft 365, Google Workspace, and Slack make it ideal for teams expanding their workflows.

Key features:

• 24/7 customer support
• Scalable call and messaging options
• Video conferencing and SMS
• On-demand call recording

---

2. Nextiva: For seamless customer experience at scale

Pricing:

• Digital: £15.19 per user/month
• Core: £22.79 per user/month
• Engage: £30.39 per user/month
• Power Suite: £45.58 per user/month

Why it’s great for growing businesses:

Nextiva combines VoIP with powerful customer relationship tools. It enables businesses to manage customer conversations across multiple channels in one place, making it perfect for companies prioritising customer experience as they grow.

Key features:

• Unified team and customer communication
• Unlimited voice and video calls
• AI-powered call analytics
• CRM and helpdesk integration

---

3. Vonage: Best for international expansion

Pricing:

• Express: £10 per user/month
• Core: £18 per user/month
• Pro: £20 per user/month
• Max: £25 per user/month

Why it’s great for growing businesses:

With coverage in over 40 countries and 96+ local numbers for inbound calling, Vonage is perfect for businesses looking to expand globally. Its virtual receptionist and call monitoring features keep customer interactions smooth across multiple locations.

Key features:

• Global phone number support
• Virtual receptionist and call monitoring
• Video meetings and collaboration
• Desktop and mobile app support

---

4. Dialpad: AI-powered communications for growing teams

Pricing:

• Standard: £12 per user/month
• Pro: £20 per user/month
• Enterprise: Contact sales

Why it’s great for growing businesses:

Dialpad leverages AI to enhance communication, offering real-time voice intelligence and AI-powered transcription. This makes it ideal for businesses focusing on efficiency and data-driven decisions while scaling operations.

Key features:

• AI-powered call transcriptions
• HD video and audio meetings
• Custom call routing and auto attendant
• Integrations with Google Workspace, Microsoft 365, and Zendesk

---

5. bOnline: Budget-friendly VoIP for growing startups

Pricing:

• Starter: £7 per user/month
• Unlimited calling: £13.95 per user/month
• Unlimited calling (with desk phone): £15.50 per user/month

Why it’s great for growing businesses:

bOnline offers enterprise-level VoIP at startup-friendly prices. With personalised voicemail greetings, call flows, and international calling from 1p per minute, it’s an affordable yet powerful solution for businesses looking to scale.

Key features:

• Set business hours and call flows
• Voice and video conferencing
• Salesforce, HubSpot, and Google integrations
• Flexible scalability as teams grow

---

6. Virtual Landline: Best for remote and hybrid workforces

Pricing:

• Local phone numbers: From £4.50/month
• 0207 or 0208 London numbers: From £10/month
• 0800 numbers: From £11.95/month
• Multi-user office numbers: From £6.95/month

Why it’s great for growing businesses:

For companies with remote teams or flexible work arrangements, Virtual Landline offers a fully mobile and scalable solution. It provides virtual office numbers and the ability to route calls to any device, making it a seamless option for businesses on the move.

Key features:

• Call forwarding and virtual receptionist
• Video conferencing for remote teams
• Self-service management portal
• UK-based customer support

---

7. 8×8: Best AI-integrated advanced customer experience

Pricing: Available on request.

Why it’s great for growing businesses:

8×8 is trusted by over 3 million business users and offers a unified communications platform that integrates AI-powered customer experience tools. It simplifies complex workflows and enhances operational efficiencies while maintaining secure and compliant communication.

Key features:

• AI-driven contact centre solutions
• Omnichannel customer interactions
• High-volume messaging and voice services
• Advanced analytics and workforce engagement management
• Global coverage and Microsoft Teams integration

---

Choosing the Right VoIP Provider for Growth

The best VoIP provider for your business depends on your specific growth needs:

• For an all-in-one scalable solution: RingCentral
• For customer-centric operations: Nextiva
• For international expansion: Vonage
• For AI-driven efficiency: Dialpad
• For budget-conscious startups: bOnline
• For remote and hybrid teams: Virtual Landline
• For AI-powered customer experience: 8×8

Each of these providers offers powerful features designed to scale alongside your business. By selecting the right VoIP service, you can enhance collaboration, improve customer interactions, and ensure seamless communication as your business grows.

See also: 5 of the best phone systems for your remote workers