How to Check If Your Energy Direct Debit Is Correct
Millions of UK households overpay their energy supplier every month without realising it. Your direct debit is set by your supplier based on an estimate — and if that estimate is higher than your actual usage, you build up credit that earns you nothing sitting in their account.
This guide explains how direct debit billing works, how to calculate whether your payment matches your actual usage, and what to do if you are overpaying.
Energy Direct Debit Checker
Enter your current direct debit and actual usage to see instantly if you are overpaying or underpaying your supplier.
Check My Direct Debit →How Energy Direct Debits Work
When you sign up for an energy tariff and choose to pay by Direct Debit, your supplier estimates how much energy you will use over the coming year based on your property details and historical usage data for that address. They divide the estimated annual cost by 12 and collect that amount each month.
Periodically — often once a year, sometimes more frequently — your supplier reviews your account and compares what you have paid against what you have actually used. If you have paid too much you will be in credit. If too little, you will be in debt and your supplier may increase your direct debit or issue a catch-up request.
The problem is that suppliers tend to set direct debits slightly high to avoid customers falling into debt. This means many households are consistently in credit, effectively lending their supplier money interest-free.
How to Calculate Whether Your Direct Debit Is Correct
The calculation is straightforward. You need three things from your latest energy bill:
- Your monthly usage in kWh (for gas and electricity separately if dual fuel)
- Your unit rate in pence per kWh (p/kWh)
- Your standing charge in pence per day (p/day)
Then work out your actual monthly cost:
| Step | Calculation | Example (electricity) |
|---|---|---|
| 1. Usage cost | Monthly kWh × unit rate ÷ 100 | 225 × 24.67p ÷ 100 = £55.51 |
| 2. Standing charge | 30.44 days × daily rate ÷ 100 | 30.44 × 57.21p ÷ 100 = £17.41 |
| 3. Monthly total | Usage cost + standing charge | £55.51 + £17.41 = £72.92 |
Repeat for gas if you are on a dual fuel tariff and add the two totals together. Compare the result to your current monthly direct debit. The difference is how much you are over or underpaying each month.
Typical Monthly Energy Costs (April–June 2026)
Using the Ofgem price cap rates for April to June 2026 and typical household consumption figures, here is what a typical dual fuel household should expect to pay monthly:
| Item | Rate | Typical Monthly Usage | Monthly Cost |
|---|---|---|---|
| Electricity usage | 24.67p/kWh | 225 kWh | £55.51 |
| Electricity standing charge | 57.21p/day | 30.44 days | £17.41 |
| Gas usage | 5.74p/kWh | 958 kWh | £54.99 |
| Gas standing charge | 29.09p/day | 30.44 days | £8.85 |
| Total typical monthly cost | £136.76 |
Typical Monthly Dual Fuel Cost Breakdown (Apr–Jun 2026)
How to Check Your Account Balance
Your energy bill or online account will show a running account balance. A credit balance (shown as a positive number or labelled CR) means you have paid more than your usage. A debit balance (shown as negative or labelled DR) means you owe more than you have paid.
A small credit balance going into summer is normal and expected — usage drops in warmer months so your fixed payments naturally build up credit that gets used in winter. A large credit balance that never reduces, or one that keeps growing month after month, suggests your direct debit is set too high.
How Much Credit Is Reasonable to Hold?
Ofgem guidance suggests holding a credit buffer of around one to two months of bills going into winter — roughly £140 to £280 for a typical dual fuel household at current rates. This covers the increase in usage as heating demand rises in autumn. Beyond that, excess credit is your money and you are entitled to request it back.
How to Request a Direct Debit Reduction or Refund
If you calculate that you are overpaying, or if you have a large credit balance, here is what to do:
- Log into your online account — most suppliers allow you to adjust your direct debit directly through their app or website
- Request a refund — contact your supplier by phone, email or live chat and ask for the credit balance to be returned to your bank account
- Submit a meter reading first — before requesting a refund, make sure your account balance is based on actual rather than estimated readings so the figure is accurate
- Reduce going forward — ask your supplier to set your direct debit to match your actual monthly cost rather than their estimate
Suppliers are required by Ofgem rules to refund credit balances promptly. If your supplier refuses or delays unreasonably you can escalate to the Energy Ombudsman.
What If Your Direct Debit Is Too Low?
If the calculation shows you are underpaying, it is better to address it proactively rather than wait for your supplier to catch it. Contact your supplier and ask them to increase your direct debit to cover your actual usage. A large debt balance that accumulates over time can result in a significant catch-up payment that is harder to manage in one go.
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Frequently Asked Questions
How do I work out if my energy direct debit is correct?
Multiply your monthly kWh usage by your unit rate, add your monthly standing charge (daily rate × 30.44), and compare the total to your current direct debit. If your direct debit is higher you are overpaying. Use the Direct Debit Checker to do this instantly.
Can I reduce my energy direct debit?
Yes. If your direct debit exceeds your actual monthly cost you can request a reduction through your supplier's app, website or customer service. You can also request a refund of any existing credit balance at any time.
How much credit should I keep with my supplier?
A buffer of one to two months of bills going into winter is reasonable — around £140 to £280 for a typical dual fuel household at current rates. Beyond that, excess credit can be refunded.
Why do suppliers set direct debits too high?
Suppliers build in a margin above estimated usage to reduce the risk of customers falling into debt. If their consumption estimate is higher than your actual usage your payments will consistently exceed your costs.
What if my direct debit is too low?
If you are underpaying your supplier will usually increase your direct debit at the next review or issue a catch-up bill. It is better to contact them proactively and request an increase to avoid a large lump sum payment.
Summary
- Your direct debit is set by your supplier based on an estimated annual usage — it may not match your actual costs
- To check: multiply monthly kWh by unit rate, add standing charges, and compare to your current direct debit
- A typical dual fuel household on the April 2026 price cap should pay around £136.76 per month
- A growing credit balance that never reduces is a sign your direct debit is too high
- You can request a direct debit reduction or refund from your supplier at any time — suppliers must process refunds promptly
- To check your figures in seconds use the Energy Direct Debit Checker →