Leaving a broadband contract early: what it costs

Leaving a broadband contract before the minimum term ends is possible. It is just expensive, and the expense is front-loaded: the fee is at its highest in the first weeks and falls to nothing by the end of the term. Knowing the shape of that curve is what turns an intimidating number into a decision you can actually make.

You can leave early at any time, but you will normally be charged the remaining months of your contract, sometimes reduced by a discount for costs the provider avoids. On a 24-month £28 contract that is roughly £644 in month one and nothing by month 24. You pay nothing if the provider broke the contract, missed a required notice, or you are past your minimum term.

What you are actually paying for

The charge exists because the introductory price is subsidised by the expectation that you will stay. Providers recover equipment, installation and acquisition costs across the minimum term, so leaving early leaves that recovery short. Whether you find that fair is a separate question from whether it is contractual — it is, if the fee is set out clearly in your terms.

The important detail is that the fee should not be a penalty. Regulators require it to reflect the provider's genuine loss, which is why most are calculated from remaining months rather than a flat sum. If a fee looks arbitrary, ask for the basis of the calculation in writing.

How the fee is worked out

The usual construction is remaining months multiplied by the monthly price, less a discount representing costs the provider no longer incurs. That is why the real figure rarely matches a naive multiplication: the total is normally somewhat lower than months-times-price.

Some providers publish a table instead — a fixed charge per remaining month, tapering as the term runs down. Either way, the number you want is the one your provider quotes for your account on the day, in writing, before you commit to anything.

The five situations where you can leave for free

There are a small number of circumstances where the fee does not apply, and they are worth checking carefully before you pay anything.

• The provider raised the price by more than your contract permitted, or calculated the rise on a different basis from the one you were told at sign-up.
• You were not given the required advance notice of a price increase. Notice is an obligation, and a missing letter is a legitimate ground for complaint.
• The provider made a material change you did not agree to — removing channels, cutting a service, or withdrawing something that was part of what you bought.
• The service has persistently failed to deliver what was promised and the provider has not fixed it after a reasonable opportunity. Keep records; this one is argued on evidence.
• You have moved to an address the provider does not cover. Most providers waive the fee in this case, but the waiver is not automatic and usually has to be requested.

How to cancel in practice

Do it in writing if you can, and keep the record. A phone call is faster but leaves you with nothing to point at if the fee is applied anyway.

• Ask for the exact early termination charge for your account, in writing, with the calculation shown. Do this before you decide, not after.
• State the ground you are relying on if you believe the fee should be waived, and reference the clause or the missing notice.
• Give the notice period stated in your contract — commonly 30 days — and confirm the date your service will end.
• Ask what happens to equipment you hold, and get the return instructions. Unreturned kit is a common source of surprise charges weeks later.
• Request final bill confirmation and keep it until the money has actually left your account.

When the provider refuses

Raise a formal complaint rather than arguing on the phone. The provider has six weeks to resolve it — the deadline was cut from eight weeks for complaints raised from 8 April 2026. If six weeks pass, or they issue a deadlock letter earlier, you can take it to their alternative dispute resolution scheme — CISAS or the Communications Ombudsman — at no cost to you. ADR decisions bind the provider, which makes escalation a real lever rather than a threat.

In practice, a written complaint that quotes the contract clause and asks a specific question tends to move faster than a general grievance. Be precise about what you want: the fee waived, the charge recalculated, or the notice backdated.

Is it ever worth paying?

Sometimes. Do the comparison properly: add the exit fee to what the remaining months would cost at your current price, then compare that total against the cheapest equivalent deal available at your address for the same period. If the saving exceeds the fee, paying to leave is rational.

That calculation rarely comes out in favour of leaving in year one, and frequently does in the final third of a contract. The middle of a long term is where it is genuinely marginal — which is exactly where most people are when they start looking.