Autumn Budget 2026 and SIM only deals: what actually changes for your bill

If you were hoping the Autumn Budget would make a SIM only plan cheaper, it does not. The Budget statement delivered on 28 October 2026 contains no new duty on mobile airtime, no change to VAT on phone plans, and no measure that applies to SIM contracts specifically. That is an honest answer rather than a hedge. What the Budget does contain are changes to household income and costs, which affect how much room there is in a monthly budget — and SIM plans, being one of the smallest fixed costs in most households, are usually easy to move when that room tightens. Why airtime prices are not a tax question Airtime is sold at the standard rate of VAT, and the Budget did not change it. So there is no announced mechanism that would push network prices down, or up, on a set date. What actually moves SIM prices is competition between networks, the cost of data, and how each provider prices rolling 30-day plans against 12-month contracts. Those are commercial decisions, taken independently of the Budget, and they change more often than tax rules do. Our SIM only comparison lists plans from UK networks with data, monthly price and contract length side by side, and each offer links straight to the network. What the Budget does change for your budget Several measures affect household cash flow. Both the National Minimum Wage and the National Living Wage rise by 3.9%, which the Chancellor said covers 2.3 million of the lowest-paid workers. Tariffs on over 100 supermarket products are suspended to keep shop prices down. The 5p cut to Fuel Duty and the reduced red diesel rate are extended through the winter and spring to July. None of these arrive on a single date, and none is a mobile saving. But if your income or outgoings shift, the part of your budget you can usually adjust fastest is a rolling SIM plan — particularly one you are out of contract on. The practical move if money is tight Check whether you are still on a contract you have already paid off. Many people stay on the same monthly price after their minimum term ends, when an out-of-contract or 30-day plan from the same network would cost less. Before switching, check the coverage at your address, whether you need to keep your number and any early exit charge. A cheaper headline price is not a guaranteed saving if the signal where you live is worse. If you need certainty rather than the lowest price, a fixed 12-month plan protects the monthly figure for its term. If you want flexibility, a 30-day rolling plan lets you move when prices change — which, in the absence of any Budget change, is the more likely driver of your bill. What to watch instead of the Budget The dates worth noting are your own: the end of your minimum term and your renewal notice. For the bills the Budget did change — energy in particular — see our main Budget 2026 article and our energy comparison.