What Are Mid-Contract Price Rises and Can Your Business Avoid Them?

You sign a contract at one price, and a few months later the price goes up. For years, mid-contract price rises were one of the most disliked features of the UK mobile market, with increases linked to inflation figures nobody could predict, plus a few percent on top for good measure.

The rules have changed significantly, and largely in customers’ favour. In this guide, we’ll explain how mid-contract price rises now work, what rights you have when prices go up, and how to keep your business mobile costs from drifting upwards inside a contract you can’t easily leave.

What Is a Mid-Contract Price Rise?

A mid-contract price rise is an increase to your monthly price that happens during your minimum term, while you’re still committed to the contract. Historically, most providers wrote annual rises into their terms, typically applied each spring, and because the rises were part of the contract you’d agreed, you couldn’t leave without paying early termination fees.

The most controversial versions linked the rise to inflation, often the Consumer Price Index or Retail Prices Index, plus an additional 3.9% on top. When inflation spiked, customers found themselves facing double digit percentage increases they could never have predicted when they signed.

What the Rules Say Now

Following an Ofcom review, inflation linked price rises were banned in new contracts from 17 January 2025. Providers can still include price rises in their contracts, but any rise must now be set out clearly in pounds and pence at the point of sale, along with when it will happen.

In practice, that means a modern contract might say, for example, that the monthly price will increase by £1.50 each April. You know the exact cost of the whole contract before you sign, which makes comparing deals far easier and removes the inflation lottery entirely.

Two important caveats for businesses. First, the ban applies to new contracts; if you signed before January 2025, your old inflation linked terms may still apply until you renew. Second, Ofcom’s rules in this area are aimed primarily at consumers and small businesses, so larger companies on bespoke agreements should check their negotiated terms, which can say something different.

Your Rights When a Price Goes Up

The key question when a price rises is simple: was this rise clearly set out in the contract you agreed?

If it was, for example a pounds and pence rise written into a post-2025 contract, then it’s part of the deal, and it doesn’t trigger any special rights. Avoiding it means choosing a contract without such terms next time.

If it wasn’t, the position is much stronger. Under Ofcom’s rules on contract changes, if your provider makes changes you couldn’t reasonably have foreseen from the contract, including price increases that weren’t clearly agreed, they must give you at least 30 days’ notice and allow you to exit the contract without penalty. That notice period is your window to act, so don’t let a price rise letter sit unread in an inbox.

If you believe a rise has been applied unfairly and your provider won’t resolve it, you can complain formally, and escalate to an independent ombudsman if it isn’t sorted within eight weeks.

How to Avoid Mid-Contract Price Rises

Read the Price Terms Before You Sign

Every quote should now let you answer three questions: what is the price today, will it rise during the term, and by exactly how much? If a salesperson can’t answer in pounds and pence, keep shopping. When comparing deals, compare the total cost over the full term rather than the headline month one price; a cheap deal with a built-in rise can cost more overall than a steady one.

Prefer Shorter or Rolling Contracts

Price rise terms bite hardest when you’re locked in for a long time. On a 30 day rolling SIM only plan, a price rise is simply a prompt to switch, because you’re never more than a month from being free to leave. Shorter commitments are the structural defence against price rises of every kind.

Use Price Rises as a Renegotiation Trigger

Even when a rise is contractual, it’s worth a call. Providers would usually rather keep a multi-line business account at a better rate than lose it at renewal, and a competing quote gives you leverage. Keep a note of when your contract actually ends so you can time the conversation well.

If You Can Leave, Make It Count

If a non-contractual rise gives you the right to exit penalty free, treat it as a free pass to the whole market. Switching is quick and your numbers move with you; our guide on how to switch your business mobile provider walks through the process step by step.

Keep an Eye on the Rest of the Bill Too

Price rises aren’t the only way a bill grows mid-contract. Out of bundle charges, add-ons and roaming can push costs up without any change to the headline price, so it’s worth reading your bill properly a few times a year; our guide to understanding your business mobile bill shows what to look for.

Final Thoughts

Mid-contract price rises have gone from unpredictable to transparent, at least for contracts signed since January 2025. The responsibility that comes with that transparency sits with the buyer: the information is now in front of you before you sign, so use it. Check the pounds and pence, compare whole-term costs, keep contracts as short as your discounts allow, and treat any rise you didn’t agree to as the exit ticket it legally is.