How much does a BT leased line cost per month?

A BTnet leased line typically costs between £250 to £950 for 100Mb to 1Gb symmetrical bandwidth, ex VAT, on a 3 or 5 year term and around £1,800 to £3,200 for 10Gb, with these terms coming at no cost for standard connection and BT covering the first £2,800 of excess construction.

Why do BT leased line quotes vary so much between sites?

BTnet leased line quotes tend to vary so much due to a variety of factors (fibre presence, distance to the nearest BT exchange or aggregation node, and civil engineering requirements), meaning that two offices in the same town can land on completely different figures, hence we at Netify have developed our calculator to provide ranged bands, rather than providing one fixed price.

Does a BTnet leased line include installation?

Yes. The standard connection for BTnet is free (on 3 and 5 year terms) and BT covers the first £2,800 of excess construction per circuit. If a survey finds that there is more than £2,800 worth of civil work to be done, you'll then get a quote for the excess before you're committed to anything.

Is a 5 year BTnet contract cheaper than a 3 year one?

Organisations can usually expect the monthly rental on a 5 year contract to be about 5 to 10% cheaper than on a 3 year deal, though this does mean that you'll give up flexibility for that discount, therefore we'd strongly recommend considering this if there's a decent chance you'll move site or want to re-tender sooner.

What does BTnet cost inside a data centre?

BTnet in a data centre can often cost a fair bit less than premises delivery (we've seen up to a third cheaper), primarily down to the fact that the access infrastructure's already sitting there, and for that same reason it's often quicker to install too, usually taking about 15 working days compared to the 60-90 you'd normally see for a premises circuit.

What do BTnet Security and Wi-Fi add to the monthly cost?

Organisations can expect £100 a month for BTnet Security with the small Cisco Meraki router (up to 500Mb), or £200 with the large router at 1Gb, and then Wi-Fi access points run £8 to £10 each per month (on a 5 year term), with the first one being free.

BTnet pricing guide, reviewed 20 July 2026

BT Leased Line Cost Calculator

Expect £250 to £950 a month ex VAT for a BTnet dedicated leased line at 100Mb to 1Gb, around £1,800 to £3,200 at 10Gb. Configure your circuit below, open your secure quote room, and Netify confirms your best price directly with BT, usually within one working day; your indicative budget shows beneath the room while you wait.

1. Open your secure quote roomEnter your work email in the panel below. Takes ten seconds, no obligation.
2. Netify confirms your best priceA BT specialist takes your scenario directly to BT’s pricing desk, usually within one working day.
3. Your best price appears in your roomYou get an email, and an optional browser notification, the moment it lands; the figure shows only in your room.

Configure your circuit

The scenario in your quote room below updates live as you change the configuration.

Bandwidth

Contract term

Where is the circuit delivered?

Resilience option

BTnet Security (Cisco Meraki)

Additional Wi-Fi 6 access points (first AP free)

Secure quote room

Get your best BTnet price, confirmed with BT

1. Open your room below. Work email only, takes ten seconds, no obligation.
2. A Netify BT specialist takes your configured scenario to BT and confirms the best available price, usually within one working day.
3. Your price appears in your secure room, never in email. You get an email link the moment it lands, plus an optional browser notification.

This is your quote room, while we confirm your price

Netify is confirming your best price with BT

£ •••.••per month

Your confirmed BT price appears here, usually within one working day

Your scenario: 200Mb on a 1Gb bearer, 3-year term, Business premises (Ethernet Fibre) - £320/month typical (range £280 to £420)

Name

Work email

Company

Phone

Site postcode(s)

Anything we should know (optional)

We are an IT company interested in reselling BTnet to our own customers

Prefer email? Write to support@netify.com

Your indicative budget

Netify market bands for this configuration; the confirmed figure appears only in your quote room.

Typical monthly rental

£320

per month, ex VAT

Indicative range

£280 - £420

site-specific: fibre presence and civils

3-year term total

£11,520

at the typical monthly figure

BTnet circuit (200Mb on a 1Gb bearer, 3-year): £320/month
One-off connection (3 and 5 year terms): £0 standard

Circuit rentals are indicative Netify market estimates, not a BT quote: BTnet pricing is generated per site by BT and varies with existing fibre, distance and civils. Free standard connection applies on 3 and 5 year terms and BT funds the first £2,800 of excess construction charges per circuit. BTnet Security and Wi-Fi access point prices are published BT figures. All figures ex VAT.

IT company? Resell BTnet through Netify instead, with upfront annual commissions payable across the customer contract term

Who this calculator is for

Mainly three types of buyer:

Organisations determining a budget for their first leased line/dedicated internet connection.
Multi-site organisations that are considering upgrading from FTTP or SOGEA broadband connections.
Procurement teams who’ve already got a BT quote in hand and want to check it against the market before signing anything.

If you’re an IT company or MSP wanting to resell BTnet, we’d strongly recommend visiting the BT Business Internet reseller programme page instead.

What drives the cost of a BTnet leased line

Factor	Effect on price
Bandwidth and bearer	The single biggest driver. A 100Mb service on a 1Gb bearer costs materially less than 1Gb, and 10Gb steps up again. Ordering a 1Gb bearer lets you upgrade bandwidth later without new civils.
Existing fibre at the site	Buildings already served by BT fibre price at the low end of a band. Sites needing new fibre runs price higher and take longer to deliver.
Contract term	5-year terms carry roughly 5 to 10% lower monthly rentals than 3-year terms in exchange for a longer commitment.
Delivery location	BTnet Data Centre Access, delivered inside a supported third-party UK data centre, is significantly cheaper than premises delivery and installs in as little as 15 working days.
Resilience	A Failover second line roughly doubles the circuit element. Backup with Quick Connect adds around a third. Load Balancing sits in between and keeps both lines active.
Excess construction charges	BT funds the first £2,800 of civils per circuit. Rural or hard-to-reach sites can go over that. You'll get the excess quoted after survey.

What every BTnet circuit includes

Every BTnet circuit offers organisations with full symmetry, 1:1 uncontended connectivity, with speeds ranging from 30Mb up to 10Gbps and no usage caps. BT also wraps BTnet in a 100% availability SLA (with service credits attached) and a five-hour target fix time, as well as UK-based support that runs 24/7, meaning that your business network experiences minimal downtime. Furthermore, BTnet latency stays under 20ms across the network, meaning that for the likes of voice/VoIP and other real-time traffic is provided with QoS priority.

We’d also recommend noting that connection is free for those opting to purchase either 3 and 5 year terms and BT also picks up the first £2,800 of any excess construction. You’ll also get a standard block of IPv4 static addresses thrown in, online bandwidth reporting and an engineer to install a managed router (with Cisco Meraki being the default option, alongside BTnet security coming bundled automatically).

What buyers miss when budgeting a leased line

Everyone focuses on the monthly cost. Lead times catch more people out. Premises delivery generally runs 60 to 90 working days if civils work is needed. A site inside a supported UK data centre can be live in as little as 15 days through Data Centre Access instead.

Then there’s the bearer question. A 100Mb service on a 1Gb bearer costs slightly more per month than ordering a straight 100Mb bearer. But it means upgrading to 500Mb or 1Gb later is just a config change rather than a whole new circuit build.

£2,800 covers most urban sites fine. Rural or awkward locations sometimes run over, so leave contingency in the budget and don’t fix your fit-out dates until the survey’s back.

Resilience is the classic afterthought. Add Failover or Backup once you’re already live and you’re starting a second delivery project from scratch. Build it into the original order if downtime would genuinely hurt. Plenty of buyers skip a second leased line altogether here and just run an FTTP broadband circuit as backup, which the calculator handles under the resilience option.

Frequently asked questions

How much does a BT leased line cost per month?: A BTnet leased line typically costs between £250 to £950 for 100Mb to 1Gb symmetrical bandwidth, ex VAT, on a 3 or 5 year term and around £1,800 to £3,200 for 10Gb, with these terms coming at no cost for standard connection and BT covering the first £2,800 of excess construction.
Why do BT leased line quotes vary so much between sites?: BTnet leased line quotes tend to vary so much due to a variety of factors (fibre presence, distance to the nearest BT exchange or aggregation node, and civil engineering requirements), meaning that two offices in the same town can land on completely different figures, hence we at Netify have developed our calculator to provide ranged bands, rather than providing one fixed price.
Does a BTnet leased line include installation?: Yes. The standard connection for BTnet is free (on 3 and 5 year terms) and BT covers the first £2,800 of excess construction per circuit. If a survey finds that there is more than £2,800 worth of civil work to be done, you'll then get a quote for the excess before you're committed to anything.
Is a 5 year BTnet contract cheaper than a 3 year one?: Organisations can usually expect the monthly rental on a 5 year contract to be about 5 to 10% cheaper than on a 3 year deal, though this does mean that you'll give up flexibility for that discount, therefore we'd strongly recommend considering this if there's a decent chance you'll move site or want to re-tender sooner.
What does BTnet cost inside a data centre?: BTnet in a data centre can often cost a fair bit less than premises delivery (we've seen up to a third cheaper), primarily down to the fact that the access infrastructure's already sitting there, and for that same reason it's often quicker to install too, usually taking about 15 working days compared to the 60-90 you'd normally see for a premises circuit.
What do BTnet Security and Wi-Fi add to the monthly cost?: Organisations can expect £100 a month for BTnet Security with the small Cisco Meraki router (up to 500Mb), or £200 with the large router at 1Gb, and then Wi-Fi access points run £8 to £10 each per month (on a 5 year term), with the first one being free.

Ask your AI assistant to price it

This calculator and the estimate_btnet_cost tool on the Netify assistant connector run the same pricing model, and request_btnet_best_price opens your secure quote room, where Netify confirms your best price directly with BT. If your assistant supports connectors, paste this prompt:

Using the Netify connector at https://netify.co.uk/api/mcp/, run estimate_btnet_cost for my site: ask me for bandwidth, contract term, delivery location, resilience and security, then give me the indicative monthly range. When I want the confirmed best price, ask for my business email and consent, run request_btnet_best_price, and check get_btnet_quote_status until my figure lands in the secure quote room.

Setup instructions for Claude, ChatGPT and other clients are on the assistant connector page. The full pricing model behind this page is published at data.json.

Methodology and sources

Netify have been an Authorised Partner of BT since 2012, therefore we’ve built our cost calculator and rental bands from our quoting experience, with the prices last reviewed on the 20 July 2026. Circuit rentals are deliberately shown as ranges because BTnet pricing is generated per site by BT. BTnet Security, Wi-Fi access point pricing, the free standard connection, the £2,800 construction contribution, the 100% availability SLA and the five-hour fix target are published BT figures. Netify is listed on the official BT Business authorised partners directory. Robert Sturt, Managing Director, is the named reviewer for the accuracy of this page.

Related Netify resources

What is a BT leased line (BTnet)? The plain-English explainer.
Why choose BTnet: key benefits explained.
The BTnet Fortinet NGFW option for security-led deployments.
BT Cloud Voice pricing calculator for the voice service most BTnet buyers attach.
Resell BT Business Internet if you are an IT company selling to your own customers.