A direct comparison of VoIP and traditional landline phone systems across cost, features, reliability, and flexibility. See which wins on each dimension and which is right for your business.
| Category | VoIP | Landline | Winner |
|---|---|---|---|
Monthly cost per line/user VoIP costs 50-75% less per line for equivalent functionality. | $10-23/user/mo | $40-60/line/mo | VoIP |
Setup cost VoIP with softphone apps requires no hardware investment. Landlines need physical phones and often a PBX system. | $0-50 (app only) or $50-200 per IP phone | $300-500+ for desk phones plus installation fees | VoIP |
International calls Most VoIP business plans include or heavily discount international calls. Traditional carriers still charge per minute. | Included in many plans or very cheap | $0.05-0.50/min typically | VoIP |
Call quality Landline audio quality is independent of your internet connection and is more consistent in areas with poor broadband. | Excellent on good internet, variable on poor connections | Consistently good regardless of internet | Landline |
Features included Modern VoIP plans include features that would require expensive add-ons on traditional phone systems. | Auto-attendant, call recording, analytics, video, SMS, voicemail-to-email | Basic call forwarding and voicemail; extras cost more | VoIP |
Scalability Scaling VoIP is immediate and software-only. Adding a new landline can take days to weeks. | Add users in minutes via admin portal | Requires engineer visit and physical line installation | VoIP |
Works during power outage Traditional landlines work during power cuts. VoIP systems go down if your internet or router loses power. | No (requires powered router and device) | Yes (traditional copper lines carry own power) | Landline |
Remote and mobile use VoIP lets staff use their business number from any device anywhere. Landline forwarding is limited and often charged per minute. | Full functionality on mobile apps anywhere | Tied to physical location; call forwarding only | VoIP |
Contract flexibility Most VoIP providers have no long-term contracts. Traditional carriers typically lock you in for 2-3 years. | Monthly or annual, easy to cancel or scale | Often 2-3 year contracts with early termination fees | VoIP |
Reliability of service When broadband works well, VoIP is equally reliable. Landlines are the safer choice in areas with unstable internet. | 99.9%+ uptime but dependent on internet | Extremely reliable; independent of internet | Landline |
VoIP is the better choice for the majority of small businesses in 2026. The cost savings are significant, the features are superior, and the flexibility of working from any device is essential for modern working patterns. The only strong case for keeping a traditional landline is if your broadband connection is genuinely unreliable or if you are in an industry with specific compliance requirements around call infrastructure.