Energy Direct Debit Too High? Here's What To Do

As of July 2026, the average UK household pays approximately £147 per month by direct debit for dual-fuel energy (gas and electricity combined). That works out at roughly £1,764 per year, though your actual figure will depend on your home size, insulation, and usage habits.

The energy price cap — set by Ofgem — changes every quarter and directly affects how much your supplier can charge per unit of gas and electricity. When the cap goes up, your direct debit usually follows. But when the cap comes down, many suppliers are slow to reduce your payments, meaning you can end up building up a large credit balance without realising it.

If your monthly direct debit feels too high, you are not alone. Millions of UK households are overpaying, and most do not know they have the right to request a reduction or claim their credit back.

Understanding how your energy company sets your direct debit amount is the first step to challenging it. The calculation is simpler than most people think.

The Basic Formula

Your supplier estimates your total annual energy usage in kilowatt-hours (kWh), multiplies it by the current unit rate, adds the daily standing charges, and then divides the total by 12 to give you a fixed monthly payment.

Example based on Ofgem typical consumption values and Q3 2026 price cap rates.

Your supplier then divides that annual estimate by 12, giving a monthly DD of around £148.59 in this example. Some suppliers add a small buffer (typically 5–10%) to protect against underpayment, which can push your DD even higher.

Why Estimated Readings Cause Problems

If your supplier does not have access to regular meter readings — either because you do not have a smart meter or you have not submitted manual readings — they will base your DD on estimated usage. These estimates often overstate how much energy you actually use, leading to a direct debit that is too high and a growing credit balance on your account.

There are several reasons your energy direct debit might increase, and not all of them mean you are using more energy.

• Price cap increases: When Ofgem raises the energy price cap (which it reviews every quarter), your supplier adjusts your DD to reflect the higher unit rates. This is the most common reason for DD increases.
• Estimated readings are too high: If your supplier is estimating your usage rather than using actual meter readings, they may be overestimating how much energy you use.
• Seasonal adjustments: Some suppliers recalculate your DD after winter, when your usage was at its highest. They may set a higher DD for the whole year based on your winter peak, even though your summer usage will be much lower.
• Your supplier is building a credit buffer: Many suppliers deliberately set your DD slightly above your estimated usage to build a credit cushion. While this protects against winter shortfalls, it means you are effectively lending your supplier money interest-free.
• Backbilling: If your supplier discovers that your previous estimated readings were too low, they may increase your DD to recover the shortfall. However, Ofgem rules state they can only backbill for a maximum of 12 months.

The key takeaway is that a rising DD does not always mean your energy usage has increased. Often, it is the result of estimated readings, price cap changes, or your supplier building up a buffer at your expense.

You have the right to ask your energy supplier to reduce your direct debit if you believe it is set too high. Here is how to do it effectively.

Step 1: Check Your Account Balance

Log into your online account or app and check whether you are in credit or debit. If you have a credit balance of more than one month’s DD, your payments are almost certainly too high.

Step 2: Submit Meter Readings

Before contacting your supplier, submit up-to-date meter readings. This gives them accurate data to recalculate your DD based on your actual usage rather than estimates. If you have a smart meter, your supplier should already have this data.

Step 3: Contact Your Supplier

Call or message your supplier and request a DD review. Tell them:

• Your current credit balance
• That you have submitted accurate meter readings
• That you would like your DD recalculated based on actual usage

Most suppliers will agree to reduce your DD if the evidence supports it. If they refuse, ask for a written explanation of how they calculated your current amount.

Step 4: Use the Ofgem Guidelines

Ofgem has introduced rules requiring suppliers to set direct debits at a fair and reasonable level. If your supplier is setting your DD significantly above what your usage justifies, they may be in breach of these rules. Mention the Ofgem guidelines if your supplier pushes back.

This is something many customers do not know: you have a legal right to claim back any credit balance on your energy account at any time. Your supplier cannot refuse to return money you have overpaid.

The process is straightforward:

• Check your balance: Log in to your account and note the credit amount.
• Request a refund: Contact your supplier by phone, live chat, or through their app. Many suppliers now have a self-service refund option in their app or online account.
• Choose how much to claim: You can claim the full credit balance or a partial amount. If winter is approaching, you may want to leave some credit to cover higher usage in the colder months.
• Expect payment within 10 days: Most suppliers refund credit within 5–10 working days, either to your bank account or by cheque.

Some suppliers try to discourage refund requests by warning you that your account might go into debit during winter. While this is a valid consideration, the money is yours and they must return it if you ask. You can always increase your DD again before winter if needed.

Important: If your supplier refuses to refund your credit or makes the process unreasonably difficult, this is grounds for a formal complaint. If the complaint is not resolved within eight weeks, you can escalate it to the Energy Ombudsman.

Most energy customers pay by fixed monthly direct debit, where the same amount leaves your account each month regardless of actual usage. But there is an alternative.

Fixed Monthly DD

Your supplier estimates your annual usage, divides by 12, and takes the same amount each month. This smooths out seasonal variation — you pay the same in summer as in winter, even though your winter usage is typically much higher. The advantage is predictability; the disadvantage is that you may build up a large credit balance during summer months.

Variable (Quarterly) DD

Some suppliers offer a variable direct debit option where your payment is adjusted each month or quarter based on your actual usage. You pay more in winter and less in summer, but your account stays closer to zero and you avoid lending your supplier money.

Not all suppliers offer variable DD. Check with your provider for available payment options.

Neither option is inherently better — it depends on your personal preference and cash flow. If you prefer fixed outgoings for budgeting, stick with fixed DD but review it regularly. If you would rather pay for what you use and avoid overpaying, ask your supplier about a variable arrangement.

If your supplier refuses to reduce an unreasonably high direct debit or will not refund a legitimate credit balance, you have clear options for escalation.

Step 1: Formal Complaint to Your Supplier

Put your complaint in writing (email is fine). State clearly what the issue is, what you want them to do, and include any evidence such as meter readings, screenshots of your credit balance, and records of previous conversations. Your supplier must acknowledge your complaint and provide a resolution within eight weeks.

Step 2: Contact the Energy Ombudsman

If your supplier has not resolved your complaint within eight weeks, or you are unhappy with their response, you can escalate to the Energy Ombudsman. The Ombudsman is a free, independent service that can order your supplier to take action, including refunding overpayments and paying compensation.

Step 3: Contact Ofgem

While Ofgem does not handle individual complaints, they do track complaint patterns across suppliers. Reporting your issue to Ofgem helps them identify suppliers that are systematically overcharging customers. You can report concerns through the Ofgem website.

Know your rights: Under Ofgem rules, your supplier must set your direct debit at a level that is fair, transparent, and based on the best available information about your energy use. If they are ignoring accurate meter readings and setting your DD based on inflated estimates, they are not meeting this standard.

What Happens If You Underpay?

If your direct debit is set too low, you will build up a debit balance. Your supplier will usually increase your DD at the next review to cover the shortfall. They cannot cut off your supply for being in debit on a direct debit account, but a significant debit balance could be a problem if you want to switch providers, as you will need to clear it first.

Here are straightforward steps to keep your energy direct debit at a fair level and avoid overpaying.

• Submit regular meter readings: If you do not have a smart meter, submit readings monthly. This ensures your DD is based on actual usage, not estimates.
• Get a smart meter: A smart meter sends automatic readings to your supplier, eliminating estimated bills and making your DD more accurate. They are free to install — contact your supplier to request one.
• Review your DD every six months: Do not wait for your annual review. Check your account balance twice a year and request a DD adjustment if you are consistently in credit.
• Claim back credit before summer: If you have built up credit during winter, claim some or all of it back in spring when your usage drops. You can always increase your DD again before the next winter.
• Compare tariffs annually: Even if your DD is set correctly, you could be on an expensive tariff. Compare energy deals at least once a year to ensure you are on a competitive rate.
• Keep records: Save screenshots of your account balance, meter readings, and any correspondence with your supplier. If you need to complain, having a clear paper trail strengthens your case.

Your energy direct debit should reflect what you actually use, not what your supplier estimates you might use. Take control by submitting readings, reviewing your balance, and requesting adjustments whenever your DD is out of line with your real consumption.