BT Business Phone and Broadband: Plans & Pricing Guide

A bundle is the path of least resistance: one provider, one bill, one number to call when something breaks. That convenience is real for a very small office. But it ties your phone and internet to a single contract, and BT's built-in voice service is deliberately basic. Below we break down what you actually get, what it costs, how the PSTN switch-off changes the phone side, and where a standalone setup beats the all-in-one.

What does a BT business phone and broadband bundle include?

A typical BT business bundle pairs a broadband line with a voice service and support under one agreement. The exact contents vary by tier, but the building blocks are consistent across BT's small-business range and are delivered over the Openreach network.

A standard package usually includes:

• A business broadband connection — FTTC or FTTP depending on what is available at your postcode
• A business line — traditional Wholesale Line Rental (WLR) or, on newer plans, BT Digital Voice over the broadband
• An inclusive calls allowance — typically unlimited UK landline calls, sometimes UK mobiles
• A static IP address
• A BT business router (SmartHub)
• Technical support from BT Business

The mix matters. On copper-era plans the voice runs over a separate phone line; on current FTTP plans it runs over the broadband as Digital Voice. That single change is the reason the phone side of these bundles is being reshaped — covered below.

How much does BT business phone and broadband cost?

BT publishes guide pricing that varies with speed tier, contract length and whatever promotion is live. Indicative figures for 24-month bundles start from around £35/month for an entry FTTC plan, rising with speed tier and inclusive calls. Treat these as starting points, not fixed rates.

These are guide prices only. BT regularly runs promotions that cut the upfront or monthly cost, and negotiated rates are common for businesses taking multiple lines or renewing proactively. The headline number rarely tells the whole story — check the out-of-contract tariff and any router or installation fees before you sign.

A practical point: bundles are seldom the cheapest route once you price the broadband and voice separately. You pay a small premium for the single-contract convenience.

What is BT Digital Voice and how does the PSTN switch-off affect it?

BT Digital Voice is BT's IP-based phone service: calls travel over your broadband instead of a separate copper line. It exists because the entire UK copper telephone network is being retired. Openreach is withdrawing the analogue PSTN and ISDN network nationally, after which every voice service must run over IP.

Openreach is retiring the analogue PSTN and ISDN network nationally on 31 January 2027. Ofcom tracks this national migration to digital landlines and the consumer protections around it (Ofcom — the switch to digital landlines). If your business is still on a traditional line, the switch is a forced decision point — and a good moment to ask whether a like-for-like replacement is really what you want.

Two things to plan for with any IP voice service:

• Power resilience. Digital Voice does not work in a power cut unless a battery backup or mobile fallback is in place. Ofcom requires providers to protect access to emergency calls for vulnerable users, but every business should have a plan.
• Capability ceiling. Digital Voice is a single-line replacement, not a phone system. It does not give you the call routing, hunt groups or remote-worker handling a proper platform does.

If you are mapping out the end of copper, our guide to the PSTN switch-off sets out the migration options in full.

Bundle vs separate broadband and VoIP — which is better?

A bundle optimises for simplicity; a separate setup optimises for capability and price. For a one- or two-person office with a single phone, the bundle is fine. For anything more complex, splitting broadband from voice almost always gives a better result. The table below shows the trade-off.

The hidden cost of a bundle is lock-in: because the phone and broadband share a contract, switching one usually means switching both. A standalone hosted phone system keeps those decisions independent.

When should you choose a hosted VoIP system instead?

If you have more than five to ten staff, multiple extensions, or people working from home, evaluate a hosted VoIP platform separately from your broadband. A dedicated system — a hosted PBX or Microsoft Teams Calling — typically delivers more capability at a comparable or lower cost than an all-in-one bundle.

The reason is design. Bundled Digital Voice replaces a line; a hosted platform replaces a phone system. You get call routing, auto-attendants, voicemail-to-email, and the ability to take your office number on a laptop or mobile anywhere. Microsoft's own Teams Phone brings PSTN calling directly into the Teams app your team already uses (Microsoft Teams Phone).

This is where a single accountable provider earns its keep. AMVIA delivers both connectivity and hosted voice, so we can look at your phone and broadband together and recommend the combination that fits your size, sites and budget — security-first, with Microsoft-certified engineers. If a high-bandwidth, guaranteed-uptime circuit matters, we can also compare a business leased line against standard broadband.