TL;DR
- A 30-day rolling SIM gives you a monthly allowance with no long-term commitment; the contract renews automatically each month unless you cancel.
- Most rolling contracts require 30 days' notice to cancel; some providers allow cancellation with shorter notice at mid-month, but the specific terms govern.
- You can keep your number by requesting a PAC code, or give it up by requesting a STAC code, both available by text.
- There is typically no exit fee on a rolling contract; you pay for the current notice period and nothing beyond that.
- Under the Consumer Rights Act 2015 and Ofcom rules, key terms must be clearly disclosed before you sign up.
What a 30-Day Rolling Mobile Contract Is
A 30-day rolling SIM-only contract is an arrangement under which you pay a monthly charge for a bundle of calls, texts, and data, with no minimum term beyond the current month. The contract rolls over automatically at the end of each 30-day cycle unless you give notice to cancel. This structure is fundamentally different from a fixed-term contract (typically 12, 18, or 24 months), where you commit to paying for a defined period and face early termination fees if you leave before the end date.
Rolling contracts are governed by the same regulatory framework as fixed-term deals. The Consumer Rights Act 2015 requires terms to be fair and transparent; the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 require key information about pricing, notice periods, and cancellation rights to be provided before the contract is concluded; and Ofcom's General Conditions impose additional obligations on providers regarding billing, switching, and complaints handling.
Notice Periods: What the Rules Require
The notice period required to cancel a rolling monthly SIM contract is determined by the contract terms rather than a single statutory rule. In the UK market, the standard notice period across most providers is 30 days, matching the billing cycle length. This means that if you notify your provider today, your service continues for a further 30 days, and you pay for that period. Some providers use a calendar-month billing model rather than a rolling 30-day model, which can mean your notice period ends at the end of the current billing month rather than exactly 30 days from the date of notice.
Ofcom's guidance on fairness in consumer contracts suggests that notice periods longer than 30 days on a monthly rolling arrangement may be considered disproportionate, though the specific enforcement position depends on individual circumstances. Where a provider's terms require more than 30 days' notice to exit a monthly rolling contract, this may be subject to challenge under the Consumer Rights Act 2015's unfair terms provisions. The Competition and Markets Authority (CMA) has published guidance on unfair contract terms that is relevant to this area.
How to Cancel a Rolling SIM Contract
The most straightforward cancellation route is to use the Ofcom-mandated text-to-switch service. If you are moving to a new network and want to keep your number, text PAC to 65075; if you are leaving without taking your number, text STAC to 75075. Either approach automatically triggers the cancellation process and gives you a code to provide to your new provider (or, in the STAC case, directly to your current provider to close the account).
You can also cancel by contacting your provider directly — by phone, online account, or in writing. Providers are required to make cancellation reasonably straightforward; they cannot insist on cancellation solely by a method that is disproportionately burdensome, such as requiring a written letter when the contract was taken out online. If you give notice mid-cycle, check whether your provider calculates the notice period from the date of notice or from the next billing date, as this affects when your service actually ends and what you owe.
| Step | Action | Key Points | Typical Timeline |
|---|---|---|---|
| 1. Decide on number | Keep it (PAC) or release it (STAC)? | PAC: text 65075; STAC: text 75075 | Immediate |
| 2. Give notice | Inform provider; submit code if applicable | 30-day notice period starts | Day 0 |
| 3. Continue service | Use calls, texts, data normally | Full allowances remain active | Days 1–30 |
| 4. Cancellation completes | SIM deactivated; number released or ported | No further charges after this point | End of notice period |
| 5. Final bill | Provider issues bill for notice period | Check for over-charges; dispute if needed | Within next billing cycle |
What You Owe on Exit
On a genuine 30-day rolling contract with no fixed term, there is no early termination fee. You are liable only for the notice period — typically the current or next 30-day cycle after you give notice. If your contract was taken out online or by telephone, the Consumer Contracts Regulations 2013 gave you a 14-day cooling-off period from the date of conclusion, during which you could have cancelled without any obligation beyond paying for services actually used. This cooling-off right does not persist beyond 14 days on a services contract.
Some providers offer rolling contracts that are marketed as monthly but have a minimum initial term of one or three months hidden in the small print. If you cancel before this initial minimum period, you may incur a charge equivalent to the remaining months of that minimum term. This is legally permissible provided the term was clearly disclosed before you signed up; if it was not, the Consumer Rights Act 2015 may offer grounds to challenge it. Checking your original welcome email or order confirmation is the best way to establish exactly what initial term, if any, applies to your account.
Price Changes on Rolling Contracts
Providers operating rolling monthly contracts are permitted to change the monthly charge, subject to giving adequate notice as required by Ofcom's guidance and the contract terms. Where a provider makes a material change to the price or conditions — including mid-contract price rises above the rate disclosed at the point of sale — Ofcom's rules on significant changes give consumers the right to exit without penalty. From January 2025, updated Ofcom rules require providers to express any future annual price rises as a fixed pound amount at the point of sale rather than as a percentage tied to an index, improving transparency.
On a rolling monthly contract, a price increase takes effect at the start of the next billing cycle following the required notice period. You can cancel during the notice window without penalty if the change is material. The exact threshold for what constitutes a material change is set out in your contract terms and in Ofcom's guidance, and providers are expected to clearly flag your right to exit when notifying you of changes.
What this means in practice
Marcus, a student in Bristol, took out a rolling monthly SIM-only deal eight months ago. He has found a better data allowance at a similar price from a different provider and wants to switch while keeping his number. He texts PAC to 65075 on the 12th of the month. He receives a nine-character PAC code and is reminded there are no outstanding charges. He gives the PAC to his new provider on the same day. The new provider submits the code two days later, and porting completes the following morning — 30 days after Marcus's notice date his old contract has fully lapsed, but the porting itself completed within two working days of submission. His old provider issues a final bill covering 14 days from the 12th to the port date, calculated on a daily pro-rata basis. There is no exit fee because he was on a rolling arrangement with no fixed term remaining.
Related Guides
How we verified this
This article draws on Ofcom's guidance on switching, billing, and significant contract changes (ofcom.org.uk), the Consumer Rights Act 2015 and Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 as published on legislation.gov.uk, and the Competition and Markets Authority's published guidance on unfair contract terms. No operator-specific pricing data has been used.
Disclaimer: Kaeltripton.com is an independent UK editorial publisher. We are not regulated by Ofcom or the FCA and we do not sell or arrange mobile services, insurance, or financial products. This content is for general information only and is not legal, financial, or technical advice. Rules, prices, and operator policies change. Verify the current position with Ofcom, GOV.UK, the ICO, or your provider before acting. ICO registered ZC135439. Last reviewed: 2026-06-05.
Frequently Asked Questions
What is a 30-day rolling mobile contract?
A 30-day rolling mobile contract is a SIM-only arrangement that renews automatically each month with no long-term minimum term. You pay a monthly charge for a bundle of calls, texts, and data, and can cancel by giving 30 days' notice (or as specified in your contract terms) without any early termination fee. The key appeal is flexibility: you are not locked in beyond your current notice period.
How do I cancel a 30-day rolling SIM?
The fastest method is to use the Ofcom text-to-switch service: text PAC to 65075 if you want to keep your number, or STAC to 75075 if you are happy to release it. Alternatively, contact your provider directly by phone, app, or online account. Give clear written confirmation of your cancellation date to avoid disputes. Providers must not make cancellation unreasonably difficult.
What notice do I need to give to cancel a rolling SIM contract?
Most UK rolling monthly SIM contracts require 30 days' notice. Check your contract terms, as some providers operate on a calendar-month basis rather than a rolling 30-day basis, which can affect the exact end date. If your contract specifies a notice period longer than 30 days, this may be challengeable under the Consumer Rights Act 2015 as a potentially unfair term.
Can I switch mid-month on a rolling contract?
Yes. You can give notice and initiate a PAC or STAC transfer at any point in your billing cycle. Your final bill will typically cover the days used in the current or notice period, calculated on a daily pro-rata rate. The port itself (via PAC) completes within one working day of submission, which may be well before your formal notice period expires, but charges run to the end of the notice period.
Is there an exit fee on a 30-day rolling contract?
On a genuinely rolling monthly contract with no fixed term, there should be no exit fee beyond the charges for your notice period. However, some contracts marketed as 'rolling monthly' carry a short initial minimum term of one to three months. If you cancel within that initial term, you may owe those remaining months. Check your original order confirmation to establish whether an initial minimum term applies to your account.
