Mobile Data vs Home Broadband
It is easy to have a rough sense that a broadband or mobile bill “feels a bit high” without actually knowing whether that is true. This calculator compares what you currently pay for broadband and mobile combined against genuine current UK market benchmarks for your specific speed tier and data allowance, so the comparison is grounded in real numbers rather than a vague feeling.
Broadband & Mobile Plan Cost Calculator
Compare your current broadband and mobile costs to market alternatives. Find out how much you could save by switching.
Comparing Your Bill Against the Market, Not Just Your Memory
Rather than asking whether your bill feels expensive, this calculator checks it against actual current market average pricing for broadband at your specific speed tier and mobile data at your specific allowance, then adds a TV package cost if relevant. This distinction matters because bill increases tend to happen gradually, a few pounds at a time at each annual price review, which makes creeping overpayment genuinely hard to notice from memory alone — a bill that felt reasonable eighteen months ago can have drifted well above current market rate without ever feeling like a sudden, noticeable jump.
This is precisely the value of checking against an external benchmark periodically, rather than relying on how a bill feels — gradual increases are, by design, easy to get used to, which is exactly why they can persist for years without ever triggering the kind of noticeable jolt that would prompt someone to actually compare and switch.
Why Speed Tier Changes the Benchmark So Much
Market average pricing varies considerably across broadband speed tiers, from standard FTTC through superfast, ultrafast and full gigabit connections, and comparing your bill against the wrong tier produces a misleading result — a genuinely fast gigabit connection compared against a standard FTTC benchmark will look artificially overpriced, when in reality it may be entirely reasonable for what it actually delivers. Entering your correct current speed tier, not simply the fastest tier that sounds impressive, is essential for a meaningful comparison here.
Seeing the Gap Against Real Benchmarks
A household paying £48 a month for ultrafast broadband and £45 a month combined for two mobile SIMs on a 30GB plan each, totalling £93 a month, compares against a market benchmark of roughly £32 for the broadband and £32 for the two SIMs combined — a market total of around £64. The gap, roughly £29 a month, adds up to close to £350 a year purely from paying above current market rate on services genuinely available at the lower benchmark price.
Multiple SIMs, Multiplied Savings
For a household with several mobile contracts, the mobile benchmark scales directly by the number of SIMs entered, since a household paying for three separate mobile plans should reasonably compare against three times the single-SIM market benchmark, not the benchmark for a single line. This matters because overpaying on a per-SIM basis compounds quickly across a household — even a modest amount above market rate on each of three lines adds up to a considerably larger total gap than the same overpayment on a single line alone.
This is worth checking individually per line where a household has several different mobile providers or deals, rather than only looking at the combined total — one line could sit close to market rate while another sits considerably above it, and the combined comparison alone would not reveal which specific line is actually driving the overall gap.
What Your Contract Timing Actually Means for You
This calculator responds differently depending on how much time is left on your broadband contract, since the practical advice genuinely differs by stage: well into a contract with many months remaining, it flags a potential early exit fee to check before switching; approaching the end of a contract, it flags this as a good moment to start comparing deals and negotiating with your current provider; already out of contract, it confirms you can switch immediately with no exit fee at all. Checking this timing before acting on any savings figure shown here matters, since a genuine saving on paper can be reduced or eliminated by an early exit fee if switching happens at the wrong point in your current contract. Our Broadband Exit Fee Calculator works out that specific fee precisely if a mid-contract switch is something you are considering despite the cost. Our Broadband Savings Calculator is worth checking too if you want to see how the loyalty penalty specifically builds up the longer you stay with the same provider.
Setting a calendar reminder for a month or two before a current contract actually ends is a simple, practical habit worth adopting — it creates a natural prompt to compare and negotiate at exactly the point when doing so carries no exit fee risk, rather than relying on remembering an approximate end date months in advance.
Frequently Asked Questions
Does this calculator recommend a specific new provider?
No — it compares your current spend against general market benchmarks to show whether you are likely overpaying, without recommending or comparing specific individual providers or deals.
Why does my result show I am already competitive despite feeling my bill is high?
This can happen if your speed tier or data allowance is genuinely at the higher end, since a fast connection or generous data allowance naturally costs more even at a fair, competitive market rate — feeling expensive and actually being overpriced relative to the market are not always the same thing.
Should I include a TV package in the comparison?
Yes, if you have one bundled in — leaving it out will understate your current total cost and produce a misleading comparison against the market benchmark, which already accounts for TV separately when the option is selected.
Is switching provider always worth it if a saving is shown?
Generally yes if you are out of contract, though it is still worth weighing any switching hassle, and confirming service quality and coverage at your specific address, alongside the pure cost comparison this calculator provides.
Can I negotiate with my current provider instead of switching?
Often yes, particularly near the end of a contract — many providers will offer a retention deal to existing customers who mention they are considering leaving, which can sometimes match or beat what a genuine switch would achieve, without the hassle of actually moving provider.
Important Information
This calculator provides an estimate based on general UK market benchmarks for informational purposes only and does not constitute a specific quote or provider recommendation. Actual available deals vary by location, provider and current promotions. See our Disclaimer for further information.