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Onecom Early Termination Fee: How Much to Cancel & Is It Worth It?

Onecom Early Termination Fee: How Much to Cancel & Is It Worth It?

The Question Every Trapped Business Owner Asks

You signed a contract with Onecom. The introductory discount has expired. Your bill has jumped from something reasonable to something painful. And now you want out.

The first question is always: how much will it cost me to leave?

The second, more important question is: will leaving actually save me money, even after paying the exit fee?

We are Compare The Networks, an independent, OFCOM-regulated business telecoms comparison service. We have been helping UK businesses compare mobile deals since 2008. We see businesses in this exact situation every week, and the maths is often more favourable than people expect.

How Onecom Calculates Early Termination Fees

Onecom's early termination fee is typically calculated as the total of your remaining monthly charges for the rest of your contract term. This is standard practice across the telecoms industry, but the impact is particularly significant with Onecom because of how their pricing model works.

Here is the key issue: Onecom commonly offers contracts with a cashback or discount model. The first 17 to 18 months of a 36-month contract are at an attractive introductory rate. After that period ends, the full price kicks in.

So if you signed a 36-month contract and the discount ran for 18 months, you are now in the expensive half. Your remaining 18 months are all at the higher rate.

The Basic Calculation

The formula is straightforward:

Early termination fee = remaining months x full monthly cost per line x number of lines

For example:

  • You have 5 SIM-only lines
  • Each line is now 80 pounds per month (after the discount expired)
  • You have 14 months remaining on your contract

Exit fee = 14 x 80 x 5 = 5,600 pounds

That sounds like a lot. But let us look at the other side of the equation.

What You Would Pay If You Stay

If you stay with Onecom for those remaining 14 months:

Cost to stay = 14 x 80 x 5 = 5,600 pounds

Now let us say you switch to a direct deal with one of the four major networks. A comparable SIM-only business deal might cost 15 to 25 pounds per month per line, depending on data allowance and network.

If you switch to a deal at 20 pounds per month per line:

Cost with new provider for 14 months = 14 x 20 x 5 = 1,400 pounds

So your total cost if you leave early:

  • Exit fee: 5,600 pounds
  • New provider cost: 1,400 pounds
  • Total: 7,000 pounds

Your total cost if you stay:

  • Onecom remaining: 5,600 pounds
  • Total: 5,600 pounds

In this example, staying is cheaper. But this changes dramatically depending on where you are in your contract.

The Break-Even Formula

Here is the formula that tells you exactly when leaving Onecom saves money:

Break-even point (in months) = exit fee / (Onecom monthly cost - new provider monthly cost)

If the break-even point is less than your remaining contract months, you will save money by leaving. If it is more, staying is cheaper purely on a financial basis.

Example Where Leaving Saves Money

Let us change the scenario:

  • 5 lines at 80 pounds per month each with Onecom
  • 24 months remaining on the contract
  • New provider: 20 pounds per month per line

Exit fee = 24 x 80 x 5 = 9,600 pounds Monthly saving = (80 - 20) x 5 = 300 pounds per month Break-even = 9,600 / 300 = 32 months

Since you have 24 months remaining, you would not break even within the contract period. Staying is cheaper in pure financial terms.

But wait. What happens after the contract ends? If you would have renewed with Onecom at the same rate, those savings continue. Over 36 months with the new provider:

Cost with new provider for 36 months = 36 x 20 x 5 = 3,600 pounds Exit fee plus new provider = 9,600 + 3,600 = 13,200 pounds Cost staying with Onecom for 24 months then switching = (24 x 80 x 5) + (12 x 20 x 5) = 9,600 + 1,200 = 10,800 pounds

Over 36 months from today, staying and then switching is still cheaper. The exit fee only makes sense when the remaining term is short relative to the price difference.

Example Where Leaving Clearly Saves Money

  • 3 lines at 75 pounds per month each with Onecom
  • 8 months remaining
  • New provider: 18 pounds per month per line

Exit fee = 8 x 75 x 3 = 1,800 pounds Monthly saving = (75 - 18) x 3 = 171 pounds per month Break-even = 1,800 / 171 = 10.5 months

You break even in about 10.5 months. Since you would be paying the new lower rate for years to come, this is clearly worth doing. Within 11 months you are saving money, and the savings compound from there.

When It Almost Always Makes Sense to Leave

Based on the patterns we see, paying the early termination fee tends to make financial sense when:

  1. You have 6 months or fewer remaining and the price difference is significant
  2. You have multiple lines where each line has jumped substantially in price
  3. You were planning to switch at the end anyway so the savings start immediately after break-even
  4. The total exit fee is less than 3 to 4 months of the price difference across all your lines

When it rarely makes sense:

  1. You have 18+ months remaining at the higher rate with a modest price difference per line
  2. You only have one line so the absolute savings are small
  3. You are close to the end of the discount period and the price has not yet increased

The Alternative: Challenge the Contract Through CISAS

Before you reach for the chequebook, consider this: if you believe you were mis-sold your Onecom contract, you may be able to have it cancelled without paying any exit fee at all.

Multiple Onecom customers have successfully challenged their contracts through CISAS (Communications and Internet Services Adjudication Scheme) and had them cancelled on the grounds of misselling. This is a free process and, if successful, means you owe nothing.

Common grounds for a successful CISAS claim include:

  • The full pricing structure was not clearly explained during the sales call
  • You were not told there was no cooling-off period for business contracts
  • Add-on services were described as free but later appeared as charges
  • The terms and conditions were read too quickly during the call for you to properly understand them

The golden rule: keep everything in writing. If you are going to challenge your contract, do not accept any verbal resolution from Onecom over the phone. Insist that all communication is in writing. If your case goes to CISAS, written evidence is what the adjudicator will review.

Read our full guide on how to complain to Ofcom and CISAS for the step-by-step process.

How to Request Your Onecom Exit Fee

If you want to know exactly what your exit fee is, contact Onecom and ask for a written breakdown. They are required to provide this. Make sure the breakdown includes:

  1. The remaining months on each line
  2. The monthly cost per line at the current rate
  3. Any handset balances outstanding
  4. Any other charges (such as broadband or VoIP services if bundled)

Compare this figure against what you would pay with an alternative provider. We can help with that. Get a free comparison across EE, Vodafone, O2 and Three and we will show you exactly what deals are available for your business.

What About Handset Contracts?

If your Onecom contract includes handsets, the early termination fee calculation changes. You will typically need to pay off the remaining handset balance on top of the airtime charges. This can increase the exit fee significantly.

However, some businesses find that the handset balance is actually reasonable and the airtime is where the real cost sits. Always ask Onecom to separate the handset cost from the airtime cost in their exit fee breakdown so you can make an accurate comparison.

Real Patterns We See

Based on the businesses that come to us looking to leave Onecom, here are the most common scenarios:

Scenario 1: The Post-Discount Shock Business signed up 18 months ago at 25 pounds per line. Discount has just expired. Bill has jumped to 75 or 80 pounds per line. They have 18 months remaining. The exit fee is high but the price increase is so dramatic that many challenge via CISAS rather than pay.

Scenario 2: The Nearly Free Business has 3 to 4 months remaining. Exit fee is modest. Switching immediately saves them from the hassle of dealing with Onecom at renewal time when the aggressive retention tactics begin.

Scenario 3: The Multi-Line Enterprise Business with 20 or more lines. Even small per-line savings add up to thousands per year. The exit fee is large in absolute terms but the annual saving is larger. These businesses almost always benefit from switching.

Facebook Group Insight

The Facebook group "Onecom problems & mis-sold contracts" with over 1,400 members is full of businesses sharing their exit fee calculations and experiences. If you are weighing up whether to pay the fee or challenge via CISAS, it is worth joining the group to see what others in your situation have done.

Many members report that the total cost of staying with Onecom over the full contract term was far higher than they were led to believe at the point of sale, which is central to many misselling complaints.

Frequently Asked Questions

How is the Onecom early termination fee calculated?

Onecom typically charges the remaining monthly payments on your contract. If you have 12 months left at 80 pounds per month, the exit fee would be around 960 pounds per line. Some contracts also include handset balances and add-on charges.

Is it worth paying the exit fee to leave?

It depends on your specific numbers. Use the break-even formula: divide the total exit fee by the monthly saving you would make with a new provider. If the result is less than the number of months remaining on your contract, leaving saves you money in the long run.

Can I get the exit fee waived?

If you were mis-sold the contract, you can challenge it through CISAS. Multiple customers have had contracts cancelled without penalty. The key is keeping all evidence and communications in writing.

Your Next Steps

  1. Ask Onecom for a written exit fee breakdown including all lines and services
  2. Get a free comparison from us to see what you would pay with EE, Vodafone, O2 or Three
  3. Do the maths using the break-even formula above
  4. Consider the CISAS route if you believe you were mis-sold

Read more:

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About this article. Claims reported here are attributed to public reviews on Trustpilot and similar platforms. They represent the opinions of the reviewers cited, not statements of fact by Compare The Networks. Brands named may dispute these claims. If you are a brand representative who believes any content requires correction, please contact us.

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