Broadband and Mobile Exit Fee Letters Explained (UK 2026)

⚡ Ofcom rule change, January 2025: New broadband and mobile contracts can no longer include percentage-based (CPI+X%) annual price rises. Providers must now state any in-contract rise as a fixed £ amount. If you signed before January 2025, different rules may apply to your exit rights.At a glance

• An Early Termination Charge (ETC) is the fee your provider charges if you leave before the end of your minimum contract term.
• Under Ofcom rules, ETCs must reflect your remaining monthly charges minus any costs your provider saves — not an arbitrary penalty.
• If your provider raises prices mid-contract in a way not clearly set out when you signed, you may have the right to leave without an exit fee.
• Contracts signed after January 2025 must state price rises as a fixed £ amount; providers who do not comply cannot enforce an ETC.
• If you disagree with a fee, complain to the provider first. If unresolved after eight weeks, escalate to Ombudsman Services: Communications or CISAS — free to use.
• There is a 14-day cooling-off period after signing online or by phone, during which you can cancel without any charge.
• Not legal/financial advice: This article explains the rules in plain English. For your specific situation, speak to a consumer rights adviser or Citizens Advice.

You've decided to switch broadband provider or upgrade to a new handset — and then a letter arrives with a four-figure "early termination charge". It looks official, the maths seems complicated, and the tone implies you have no choice but to pay.

In many cases, you do have choices. UK regulators have put clear limits on what exit fees can include, how they must be calculated, and when providers can enforce them at all. The letter your provider sends is not always correct, and challenging it is more straightforward than most people realise.

This guide walks through what an early termination charge letter actually says, which parts of it carry real weight, and the situations where you can legitimately walk away without paying a penny.

What is an early termination charge?

An Early Termination Charge (ETC) is a contractual fee for leaving a fixed-term deal before the agreed end date. Most broadband and mobile contracts run for 12, 18, or 24 months in exchange for a subsidised router, handset, or lower monthly price. When you leave early, the provider argues it has not recouped its upfront costs.

Under Ofcom's rules, an ETC must be a genuine estimate of the provider's financial loss — not a penalty. That means it should reflect the monthly charges you would have paid for the remaining term, minus any costs the provider saves because you've left (marketing, billing, customer service, and similar). It cannot exceed that amount.

In practice, most providers calculate ETCs by multiplying remaining months by your monthly fee. That is usually acceptable — but if the figure seems inflated, or does not reduce as your contract nears its end, it is worth checking the working.

Reading the letter: what each section means

Your contract end date

The letter should state when your minimum term ends. Check this against your original confirmation email or welcome letter. Providers occasionally use the date the service was activated rather than the date you signed — and those can differ by days or weeks, which changes the fee.

Remaining months and the monthly charge used

This shows how the ETC was calculated: months remaining multiplied by your monthly charge. If your monthly charge has increased since you signed — because of a price rise or an introductory discount that expired — the letter should be using the original contracted rate, not any inflated figure.

Any deductions applied

Some providers apply a small percentage discount to reflect costs saved. Many do not itemise this at all. You can write to your provider asking them to confirm whether any cost-saving deduction has been applied to the calculation.

Equipment return clause

If you have a provider-owned router or device, the letter may include a separate charge for non-return. This is normally separate from the ETC itself — returning equipment does not mean you've accepted the exit fee.

When you may not have to pay

Price rises not clearly disclosed at sign-up

If your provider raises prices during your contract in a way that was not clearly set out when you originally signed, Ofcom rules give you the right to leave without an ETC. You must exercise this right within 30 days of being notified of the change.

There is an important distinction here. Contracts signed before January 2025 often included clauses allowing annual rises linked to CPI or RPI inflation. Ofcom ruled in 2023 that such rises — if the formula was clearly explained in the original contract — do not trigger a no-fee exit right. However, from January 2025, new contracts can only state in-contract price rises as a fixed £ amount. If a provider with a post-January 2025 contract raises prices beyond that stated amount, the customer's right to leave fee-free is restored.

Service falling below minimum speed

If your broadband consistently fails to reach the minimum guaranteed download speed stated in your contract, you have the right to leave without charge after following the provider's complaints process. Log your speed test results (date, time, and result) over several weeks, and write to your provider asking whether a minimum speed guarantee applies to your contract.

Within the 14-day cooling-off period

All consumer contracts for services sold online or by phone carry a 14-day right to cancel. If you are within 14 days of signing, you can walk away with no ETC — though you may owe for any service already consumed.

Material changes to contract terms

If your provider makes any significant change to your terms — not just price — you generally have the right to leave. This includes changes to data allowances, contract length, or the nature of the service itself. The provider must notify you, and you normally have 30 days to decide.

Got an exit fee letter you're not sure about?

Upload it to Clarify and ask in plain English: "Is this ETC correct?" or "Do I have grounds to dispute this?" Clarify reads the letter, checks the stated calculation, and tells you what your options are — with citations from the actual document.

Check my letter with Clarify

How to challenge an exit fee

Start by writing formally to your provider — a complaint by email creates a record and triggers the official complaints process. State clearly that you believe the ETC is incorrectly calculated or unenforceable, explain why, and ask for a written response. Keep the tone factual and save all replies.

Providers must acknowledge complaints promptly and resolve them within eight weeks. If your complaint is not resolved satisfactorily in that time — or if the provider issues a "deadlock letter" — you can escalate at no cost to the relevant ADR (Alternative Dispute Resolution) scheme:

• Ombudsman Services: Communications — covers most major providers including BT, Sky, Virgin Media O2, and EE.
• CISAS (Communications and Internet Services Adjudication Scheme) — covers providers including Vodafone and TalkTalk.

Your provider's website should state which scheme it belongs to. The ADR scheme can order refunds, fee waivers, or other remedies. The process is free for consumers.

Switching rather than simply cancelling

If you are moving to a new broadband provider using Ofcom's One Touch Switching process, your new provider manages the transfer and notifies your current one. An ETC may still be issued — but disputing it afterwards is still possible. Completing a switch does not mean you have accepted any fee stated in an exit letter.

For mobile, the process differs slightly: you request a PAC (Porting Authorisation Code) to keep your number, which your current provider must give you within two hours. Asking for a PAC is not an acceptance of any ETC. Obtain the code, check the fee calculation carefully, and raise a dispute if needed before paying.

Not sure where you stand?

Upload your original broadband or mobile contract to Clarify alongside the exit fee letter. Ask "when does my minimum term end?" or "does this contract allow them to raise the price?" Clarify finds the answer in the small print — so you know exactly what to say when you call.

Read my contract with Clarify

Frequently asked questions

Can I simply refuse to pay an early termination charge?

You can dispute it formally, but refusing to pay a valid charge without raising a complaint could lead to the debt being passed to a collections agency and a negative marker appearing on your credit record. Raise a formal complaint and escalate to the ADR scheme rather than simply refusing to pay.

Is there a legal cap on how high an exit fee can be?

Ofcom rules require ETCs to be calculated on remaining monthly charges minus any costs saved by the provider — so a fee that exceeds your remaining monthly payments is almost certainly unenforceable. The Consumer Rights Act 2015 also allows courts to treat terms creating disproportionate charges as unfair.

Does the 14-day cooling-off period apply to in-store contracts?

Not automatically. The 14-day statutory right to cancel applies to contracts concluded online or by phone. Contracts signed in a shop ("on-premises" contracts) do not carry this right unless the provider voluntarily offers it — though many high-street retailers do offer their own cooling-off periods.

My provider raised prices mid-contract. Can I leave for free?

It depends on when you signed. If you signed before January 2025 and your contract included a clearly stated CPI+ or RPI+ formula, Ofcom's 2023 ruling means that price rise may not trigger exit rights. For contracts signed after January 2025, any rise beyond the stated fixed £ amount restores your right to leave within 30 days without a fee.

How do I find out which ADR scheme my provider belongs to?

Every Ofcom-regulated provider must belong to an approved ADR scheme. The scheme name appears on the provider's website, usually under the "complaints" section. Ofcom's website publishes a full register of approved providers and the ADR scheme each one uses.

Will disputing an exit fee affect my credit score?

Not if you raise a formal complaint before any payment is reported as missed. Notify your provider in writing that you are disputing the charge and do not intend to pay while the dispute is active. A genuine, logged dispute should not be recorded as a missed payment — but keep copies of everything in case you need to challenge a credit entry later.

My broadband speed has been poor for months. Does that help me exit for free?

Potentially yes. Ofcom requires providers to state a minimum guaranteed download speed at the point of sale. If your connection consistently falls below that figure and the provider cannot remedy it within 30 days of a formal report, you are entitled to leave without an ETC. You will need evidence — a log of speed tests is the most effective tool.

I already paid the exit fee. Can I claim it back?

Yes, if you believe it was incorrectly calculated or unenforceable. Raise a complaint with your provider citing Ofcom's ETC rules and request a refund. If the complaint is rejected, you can escalate to the ADR scheme within six months of the provider's final response letter — even after you have already paid.

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This article provides general information only and does not constitute legal or financial advice. Ofcom rules and contract regulations change — always check current guidance and your own contract terms. For advice on your specific situation, contact Citizens Advice or an independent consumer rights adviser.