Switch to a cheaper prepayment meter tariff (UK) — July 2026

Compare prepayment meter tariffs for your home

If you pay-as-you-go for energy, a small difference in unit rates and standing charges adds up across the year. Prepayment is capped by Ofgem, but the cap is a maximum — not the cheapest deal available. EnergyPlus compares whole-of-market options for UK prepayment meters (key, card and smart PAYG) and guides you through switching, as of July 2026.

Switching from a prepayment meter: what to expect

Since the 2024 rule changes, prepayment customers can switch more freely than most people assume — subject to supplier checks and meter compatibility. In 2026 the cheapest route is often either a smart prepayment meter (more tariffs, app top-ups) or moving to credit mode / Direct Debit, which usually unlocks the lowest fixed deals.

• No disruption: your supply doesn't stop during a switch.
• Top-ups: keep topping up as normal until the switch completes.
• Timing: most switches finish within about 5 working days; PPM meter changes can take a little longer.

Check the real price

PAYG cost is pence per kWh plus a daily standing charge. We compare both so you judge total annual cost, not a headline figure.

Smart PAYG top-ups

Smart prepayment supports app/online top-ups, clearer usage tracking and remote tariff changes — no more trips to the shop with a key.

Lock in before 1 July

Sub-cap fixed deals can save around £300 over 12 months versus riding the variable cap up. Available if you can move to Direct Debit.

Compare whole-of-market

We help you check a wide range of suppliers and tariffs available for prepayment in your area. See our compare energy prices tool to start.

Switch with confidence

We explain prepayment debt rules, the Debt Assignment Protocol, meter compatibility and fixed vs variable, so you're clear on what you're choosing.

What smart PAYG gives you

• Top up by app, online, phone or in shops — credit lands in minutes
• Live balance and usage on your in-home display
• Remote tariff changes and faster, often smoother switching
• Friendly-credit hours and emergency credit to avoid running out

How to get one

Smart meters are offered free by suppliers. Ask your supplier to install one and set it to prepayment mode, or pick a new tariff that includes a smart PAYG setup. If you already have a smart meter on credit, many suppliers can switch it to prepay remotely.

Confirm the new supplier can run your specific smart meter in smart (not "dumb") mode before you commit.

The upside

• Access to fixed deals that can save ~£300 over 12 months vs the variable cap
• Lower standing charges on some Direct Debit tariffs
• No more topping up or risk of self-disconnection
• With a smart meter, the swap from PAYG to credit is often remote and free

Things to check first

• Suppliers may run a credit check to remove a prepayment meter
• Any meter debt usually needs a repayment plan agreed first
• A security deposit can apply if you have a poor payment history
• Make sure monthly Direct Debit suits your budget — prepayment's control can be worth keeping

Meter compatibility

Key/card and smart PAYG meters may have different switching routes. If a tariff needs a smart setup, the supplier confirms whether a meter configuration change is required.

Debt on the meter

You can usually still switch with up to £500 of debt per fuel — it transfers under the Debt Assignment Protocol. Larger debts may need a repayment plan first.

Address & tenancy

If you pay the energy bill you can usually choose the supplier — even in a rented home. If energy is included in your rent, switching may not apply.

1) Move PAYG → Direct Debit + fix

Biggest typical saving. Unlocks sub-cap fixed deals (~£300/yr potential vs variable). Needs a credit check and a budget that suits monthly DD.

2) Switch to smart PAYG with a cheaper supplier

Keeps prepayment control while opening more tariffs and lower regional standing charges. Look at the unit rate and standing charge together.

3) Cut your standing-charge burden

If you use little energy, the daily standing charge dominates. Compare regional standing charges — see our guide to the cheapest standing charges.

4) Match a time-of-use tariff to your usage

Electric heating or an EV? Once on smart credit you could use Economy 7 or a time-of-use tariff to shift usage to cheaper hours.

Comparing without the standing charge

A lower unit rate can be wiped out by a higher standing charge. Always compare total cost based on your likely usage.

Assuming you can't move to Direct Debit

Many PAYG households qualify for credit mode and the cheaper fixes it unlocks. It's worth checking, not assuming.

Ignoring the 1 July cap rise

The variable cap jumps +13% on 1 July 2026. If a sub-cap fix is open to you, leaving it too late can cost you the saving.

Can you switch to a cheaper prepayment meter tariff in the UK?

Yes. You can usually switch by comparing available PAYG deals, switching supplier, or changing your meter setup (for example, moving to smart PAYG where available). Eligibility can depend on meter type, your address, and credit checks for certain tariffs. Use the comparison form to check options for your postcode.

Is prepayment more expensive than Direct Debit in 2026?

Not at the cap level. Since Ofgem's prepayment levelisation, the PPM cap sits roughly in line with Direct Debit — on some regional standing charges marginally lower. The bigger saving from moving to Direct Debit is access to sub-cap fixed deals that prepayment tariffs rarely offer.

Do I need a smart meter to access cheaper prepayment tariffs?

Not always, but a smart meter in prepayment mode makes it easier to access certain tariffs and manage top-ups. With smart PAYG, suppliers can often change your tariff remotely and you can top up online or by app.

Can I switch from prepayment to a credit meter for cheaper rates?

Often, yes — and it's frequently the biggest saving. A credit meter opens access to more tariffs and fixed deals, but suppliers may run a credit check and ask for a deposit if you have debt or missed payments. Existing arrears usually need a repayment plan or clearing first.

Will switching supplier affect debt on my prepayment meter?

It can. Under the Debt Assignment Protocol you can usually switch with up to £500 of debt per fuel and it moves with you. Larger balances may need to be settled or repaid under an agreed plan first. Contact your supplier to confirm your balance.

How long does it take to switch prepayment energy supplier?

Many UK switches complete within around 5 working days, but prepayment-specific checks or meter compatibility issues can cause delays. Your supply won't be interrupted during the switch — keep topping up as normal.

What information do I need to switch prepayment meter tariff?

Usually your address and meter details (MPAN for electricity, MPRN for gas). Taking a meter reading where supported helps ensure your opening balance is accurate when you move to a new tariff or supplier.

How can I keep costs down if I can't switch right now?

Ask your supplier about cheaper tariffs, emergency credit, friendly-credit hours and debt repayment settings. You can also cut usage by improving insulation, using heating controls and running appliances efficiently — useful ahead of the +13% cap rise on 1 July 2026.