How prepayment and credit meter tariffs differ in 2026
A prepayment meter (PPM) requires you to top up credit before using gas or electricity. A credit meter bills you after you have used the energy, usually by direct debit. The difference in cost between the two payment methods is significant.
Switching from a prepayment to a credit meter saves £100–£200 per year on typical bills. The upfront fee is £50–£150, so you recoup the cost in 3 to 12 months. Compare supplier fees before requesting the switch.
- Switch saves £100–£200 per year on typical combined bills.
- Upfront fee ranges from £50 to £150 depending on supplier.
- Payback period is usually 3 to 12 months.
- Standing charge drops by £80–£130 for electricity annually.
- Request the switch from your supplier; they must offer it.
- How prepayment and credit meter tariffs differ in 2026
- Quick numbers what the switch costs and saves
- The supplier can charge a fee to switch your meter type
- You can switch supplier to get a credit meter without paying a fee
- Eligibility who can request a prepayment to credit switch in 2026
- How to verify a credit-meter installer is certified
- What happens to your prepayment debt when you switch to credit
Prepayment meters are the most expensive way to pay for energy, while paying by direct debit for a credit meter is the cheapest. The average PPM standing charge in 2026 is roughly £0.65 per day higher than the equivalent direct-debit standing charge, according to the Ofgem price-cap breakdown for October 2025 to March 2026 (Ofgem, 2026). PPM customers also pay a higher unit rate for both electricity and gas under the default tariff cap (Ofgem, default tariff cap level, 2026). Switching to a credit meter moves you onto the standard credit or direct-debit tariff, which typically lowers your annual bill by 5 to 10 percent before any change in your energy usage.
Quick numbers what the switch costs and saves
The table below shows the typical costs and savings of switching from a prepayment to a credit meter in 2026. All figures are based on UK government and industry data.
| Cost or saving item | Typical £ range (electricity) | Typical £ range (gas) | Source |
|---|---|---|---|
| Upfront switch fee | £50–£150 | £50–£150 | Supplier policy, Ofgem guidance (Ofgem, 2026) |
| Annual standing-charge saving | £80–£130 | £20–£40 | Ofgem price-cap breakdown (Ofgem, 2026) |
| Typical annual bill saving | £100–£200 (combined) | £100–£200 (combined) | Energy Saving Trust (Energy Saving Trust, 2026) |
| Payback period | 3–12 months | 3–12 months | Calculated from above figures |
The upfront cost to switch is typically between £50 and £150, but the annual saving on standing charges alone can reach £100 to £150. This means the payback period is usually between 3 and 12 months.
The supplier can charge a fee to switch your meter type
Suppliers are allowed to charge a reasonable fee for physically swapping a prepayment meter for a credit meter. Ofgem sets out the rules in its consumer guidance on prepayment meters (Ofgem, 2026). The fee is typically between £50 and £150, but some suppliers waive it if you are in debt or on a vulnerable-customer register.
You cannot be forced to pay the fee if you are switching supplier at the same time. In that case, the new supplier handles the change and often covers the cost. The fee is capped at the supplier’s reasonable costs, and Ofgem can investigate excessive charges if you report them.
You can switch supplier to get a credit meter without paying a fee
Switching to a new supplier that offers credit meters often triggers a free meter exchange. Ofgem’s consumer page on switching supplier explains that the new supplier must offer you a credit meter unless your property is unsuitable, for example if there is no gas pipe or the property uses communal heating (Ofgem, 2026).
You can use a price-comparison site to find a tariff that includes a free meter swap. The switch itself takes up to 21 days, and the meter installation is scheduled separately. This route avoids the upfront fee entirely.
how to switch energy supplier without penalty
Eligibility who can request a prepayment to credit switch in 2026
Any homeowner or tenant with a prepayment meter can request a switch, but tenants need landlord permission. The GOV.UK guidance on prepayment meters confirms this requirement (GOV.UK, 2026). You must not have an outstanding debt on the prepayment meter that is over 28 days old. Ofgem’s debt-repayment rules state that if you are in debt, the supplier may require you to set up a repayment plan before the switch (Ofgem, 2026).
Vulnerable customers have additional protections. Under Ofgem’s rules for vulnerable customers, if you are over 75, disabled, or have a young child, you cannot be refused a switch due to debt (Ofgem, 2026).
How to verify a credit-meter installer is certified
All meter installers must be registered with the relevant competent-person scheme. Gas Safe Register covers gas meters, while NICEIC or NAPIT covers electricity meters. The MCS website provides guidance on finding an installer (MCS, 2026). Check the installer’s registration number on the Gas Safe Register or NICEIC/NAPIT website before work begins.
The installer must provide a certificate of compliance after the meter swap. Keep this for your records. If the supplier arranges the swap, they must use a certified contractor. You can ask for the contractor’s registration details and verify them yourself.
how to check gas safe register for meter work
What happens to your prepayment debt when you switch to credit
Any debt on the prepayment meter does not vanish. Ofgem’s guidance on debt and prepayment meters confirms that the debt is transferred to the credit meter account (Ofgem, 2026). The supplier will set up a repayment plan, typically over 12 to 24 months, added to your monthly direct debit.
You cannot be disconnected for the debt if you keep up with the repayment plan. If the debt is very old, over 6 years, it may be statute-barred and unenforceable. Check with Citizens Advice for guidance on energy debt (Citizens Advice, 2026).
Frequently Asked Questions
The upfront fee is typically £50 to £150, set by your supplier under Ofgem guidance. Some suppliers may waive the fee if you have a smart meter or are in fuel poverty.
You can save £100 to £200 per year on combined gas and electricity bills, according to the Energy Saving Trust. The main saving comes from lower standing charges and unit rates under the direct debit tariff.
The switch usually takes 2 to 4 weeks from your request, depending on your supplier's process and whether a meter exchange is needed. Your supplier must complete it within 28 days under Ofgem rules.
Yes, but you may need to repay the debt through a repayment plan on the new credit meter. Ofgem requires suppliers to offer a route to switch unless the debt is over £500 for gas or £500 for electricity.
Prepayment meters charge higher standing charges (about £0.65 per day more) and higher unit rates under the Ofgem price cap. Credit meters bill you after use, with lower rates for direct debit payment.
