How broadband early termination charges are calculated in the UK

If you want to leave your broadband contract before the minimum term ends, you will usually pay an early termination charge (ETC). The rough shape of the sum is simple: it is based on what you would have paid for the months left on your contract, minus the costs your provider no longer has to cover because it has stopped supplying you. Providers do not just bill you the full remaining amount, and knowing the deductions is the difference between accepting a fair fee and querying an inflated one.

This guide explains the standard method, walks through the arithmetic with a worked example, and sets out the situations where the charge can be reduced or waived completely.

What is a broadband early termination charge?

An early termination charge is the fee you pay for ending a fixed-term broadband contract before its minimum period is up. Most home broadband deals run for 12, 18 or 24 months, and leaving early breaks that agreement. The provider adds the charge to your final bill.

Vodafone, for example, says it puts the fee on your final bill, which you receive within 22 days of leaving. The charge is meant to cover the revenue the provider loses by you going early, adjusted down for the costs it avoids by no longer running the service to your home.

Typical exit fees across the UK market sit somewhere between roughly £60 and £320, depending on your monthly price and how many months remain.

How the charge is calculated

The core method is the same across providers, even if the exact percentages differ. You take the monthly charge, strip out the costs the provider saves, apply a small discount because you are paying in one lump sum rather than monthly, and multiply by the months left on your contract.

Broken into steps, the calculation under Ofcom guidance works like this:

1. Take the monthly charge, excluding VAT.
2. Deduct the wholesale costs the provider saves by no longer delivering the service.
3. Apply an early payment discount, typically between 1% and 3%, because you are settling early.
4. Multiply by the number of months remaining on your contract.
5. Add 20% VAT back on.

The key rule is that the fee cannot exceed the remaining value of your contract. You should never be charged more than you would have paid by simply staying to the end.

What providers deduct from the total

This is the part that trips people up. Your monthly bill covers more than pure profit for the provider. Part of it pays for the underlying network connection, wholesale line costs and other running expenses. Once you leave, the provider stops paying those costs, so it has to knock them off the fee.

The wholesale saving varies. Ofcom guidance describes deductions somewhere between £2 and £15 a month. As an illustration of how this plays out with specific firms:

• BT and EE take the monthly price excluding VAT, subtract saved wholesale network costs of roughly £14 to £17 a month, apply a 1% early payment discount, multiply by the remaining months, then add 20% VAT.
• Sky deducts VAT from the monthly charge, subtracts its cost savings, applies a 3% early payment discount, multiplies by the months left, and adds 20% VAT back on.
• Virgin Media uses set monthly early termination charges tied to your broadband tier (for example M125, M250 or Gig1), multiplied by the remaining months, with a discount for early settlement.

Vodafone works slightly differently for its part fibre and full fibre plans. Its charge is 80% of the monthly cost of your Home Broadband and Phone Plan, minus any discounts, multiplied by the months left when you give notice. In effect, the 80% figure is Vodafone's way of stripping out the costs it no longer incurs.

How VAT applies to the fee

Broadband early termination charges include VAT at the standard rate of 20%. The way the sum is built matters here. Providers typically start from the monthly charge excluding VAT, apply the deductions and the early payment discount to that net figure, then add 20% VAT back on at the end.

That ordering keeps the VAT calculation honest. You should not see VAT applied to the full gross monthly price and then again on top, and the deductions should reduce the base before VAT is added.

What Ofcom rules say about exit fees

Ofcom sets the boundaries. The two rules worth knowing are the cap on how the fee is worked out and the price rise protections.

First, an exit fee cannot exceed the remaining contract value, and it must reflect the costs the provider genuinely saves by not supplying you. That is why the deductions and early payment discount are not optional extras; they are built into the accepted method.

Second, and more recent, is the pounds and pence rule. From 17 January 2025, Ofcom banned providers from using inflation-linked contract terms such as CPI or RPI plus a percentage. Any mid-contract price rise now has to be stated clearly in pounds and pence at the point of sale. If a provider fails to give compliant notice, or tries an unannounced price hike that was not set out at sign-up, you are entitled to leave without penalty. You generally have 30 days from being notified to exercise that right.

How to estimate your own charge: a worked example

The cleanest way to see the method is to follow it through. Take a plan built on the standard Ofcom-style calculation:

• Monthly price including VAT: £30
• Months left on contract: 6
• Wholesale cost the provider saves: £10 a month
• Early payment discount: 2%

Step by step:

1. Strip out VAT. £30 divided by 1.2 gives a net monthly charge of £25.
2. Deduct the £10 wholesale saving: £25 minus £10 = £15 a month.
3. Apply the 2% early payment discount: £15 x 0.98 = £14.70 a month.
4. Multiply by the 6 months remaining: £14.70 x 6 = £88.20.
5. Add 20% VAT: £88.20 x 1.2 = £105.84.

So the early termination charge in this example is about £105.84.

It is worth seeing how a provider's own shorthand compares. Vodafone's part fibre and full fibre method is 80% of the monthly cost, minus discounts, times the months left. On a £30 plan with a £5 discount and 5 months to run, that is (£30 minus £5) x 0.8 x 5 = £100. The percentage bundles the deductions into a single figure rather than spelling them out line by line.

Online calculators from sites such as Switchity and Cost Saver can produce an estimate quickly if you enter your provider, monthly fee and remaining months. Treat the result as a guide. For the exact figure, check your provider's online portal or ask directly. Vodafone broadband customers, for instance, need to call 03333 040 191 for a settlement quote.

When you can avoid or reduce an early termination charge

There are several legitimate ways to pay less, or nothing at all.

The cooling-off period. If you signed up recently, you have a 14-day cooling-off period during which you can cancel without penalty. Some providers extend this. Sky offers a 31-day cooling-off period on broadband.

A mid-contract price rise. If your provider raises prices in a way not clearly fixed in pounds and pence when you signed up, you can leave penalty-free. You usually have 30 days from notification to do so.

Slow speeds. If your provider has signed up to Ofcom's Broadband Speeds Code of Practice, and your download speed drops below the minimum guaranteed figure in your contract, you can exit without penalty. The provider must be given the chance to fix the problem first and fail to do so within 30 calendar days of you reporting it.

A switching deal that pays your fees. Some providers offer credit towards the cost of leaving your old supplier. Vodafone, for example, has offered up to £300 in credit to help with leaving fees. If a new provider covers your ETC, the charge still exists but stops being a barrier.

Timing. The fewer months left, the smaller the charge. If you are close to the end of your term, waiting a little longer can wipe out the fee entirely.

Switching itself is now handled through One Touch Switch. You place your order with the new provider, and it coordinates cancelling your old service. You do not need to ring your existing supplier to cancel, though you should still find out your settlement figure so there are no surprises on your final bill.

Frequently asked questions

How many months of remaining charges do I have to pay?

You pay for every month left on your minimum contract term, but not at the full monthly rate. Each month is reduced by the provider's saved wholesale costs and a small early payment discount before VAT is added back.

Is VAT included in the early termination charge?

Yes. The fee includes VAT at 20%. Providers work from the net monthly charge, apply the deductions, then add VAT on at the end.

Can a provider charge me more than my remaining contract is worth?

No. Under Ofcom rules the charge cannot exceed the remaining value of your contract, and it has to account for the costs the provider saves by not supplying you.

What if I only have a rolling monthly contract?

Rolling one-month plans generally do not carry an early termination charge. With Vodafone 5G Broadband on a one-month plan, for example, you are billed for the month ahead and refunded pro-rata for the days you do not use, though you still have to return the hub.