How to Tell If You're Overpaying Your Energy Bill (Without Guessing)

The honest answer to "am I overpaying for electricity" is: you probably are, but you can find out in 40 seconds with your actual bill.

Here's why "probably" is the right starting point. The ACCC's December 2025 report found 36.5% of residential customers on market offers, nearly 2.5 million, are paying prices at or above the default offers. More than half of the customers in its dataset, 4.0 million, are on a plan more than a year old, and only 1 in 5 residential customers switch retailers in a given year. Source: Inquiry into the National Electricity Market, December 2025 report, ACCC.

That's before counting the households who switched once and haven't checked since. Or the ones who got a "better deal" from their current retailer after a phone call, but that deal was still above what a competing provider would offer.

So yes: statistically, overpaying is the most common state. But statistics don't answer your question. Your bill does.

The Three Signs You're Overpaying

You don't need to be an energy expert to read these. They're in your bill right now.

Sign 1: Your annual cost is above the reference price

A reference price is not a cents-per-kWh rate, and it cannot be compared against one. It is an annual dollar amount for a stated benchmark level of usage, and it is a cap on standing offers rather than a market midpoint. Different regulators set it in different places: the Australian Energy Regulator sets the Default Market Offer in New South Wales, South Australia and south-east Queensland; the Essential Services Commission sets the Victorian Default Offer; the Independent Competition and Regulatory Commission sets the ACT's.

For a residential customer on a flat rate, the Default Market Offer for 2026–27 is:

Source: Default Market Offer 2026–27 information kit, AER.

Because the benchmark usage differs by zone, the only sound comparison is against your own annual cost at your own consumption, not against your rate in isolation. That is the comparison this tool runs for you.

The ACCC found that residential customers not on their retailer's best plan could have saved an average of $291 a year just by asking that retailer to move them onto the cheapest plan it already offers, measured from the better-offer messages retailers are required to print on bills. By region: $300 in New South Wales, $320 in south-east Queensland, $293 in South Australia and $280 in Victoria. Source: Inquiry into the National Electricity Market, December 2025 report, ACCC, Table 3.3, page 37. Note the ceiling on that figure: it's the best plan your own retailer has, not the best plan in the market.

Sign 2: You have a conditional discount that makes the plan look cheaper than it is

Many plans advertise a usage discount. "15% off usage charges if you pay on time" is the classic form. This discount is only applied if you meet the condition. If you ever miss a direct debit, pay late, or don't pay the full amount, the discount is not applied for that billing period.

Conditional discounts are also time-limited on some plans. After the introductory period, the discount either reduces or disappears entirely.

To get your real effective rate: take the usage rate, apply the discount only if you're certain you meet the conditions reliably. If there's any doubt about meeting the conditions, the headline rate is your real rate.

Sign 3: You've been on the same plan for more than 12 months

This isn't a direct measure of overpayment. It's a risk indicator. The retail electricity market in Australia moves. New offers enter regularly. Retailers adjust their competitive pricing to attract new customers.

A plan that was genuinely competitive 18 months ago may now sit well above the market best. Not because anything changed on your end. Because the market moved and your plan didn't. The ACCC's finding that customers on plans more than three years old pay $221 a year more, 10.5% more, than customers on new plans is the measured version of this. It's a measure of plan age, not of whether you're on a default offer. Source: Inquiry into the National Electricity Market, December 2025 report, ACCC, page 32.

If you can't remember when you last actively chose your current plan, or if you've never switched, this is the clearest signal to check.

The Wrong Way to Check

Go to a comparison site. Enter your postcode. See a list of plans. Try to mentally compare the cheapest plan's annual cost against what you think you pay.

This process has two fundamental problems.

Problem one: You don't know your current annual cost accurately. You know your last bill. You don't know whether that bill was high or low for your usage pattern, or how it normalises over a full year.

Problem two: The comparison site doesn't know your current tariff rates. They can't tell you whether you're overpaying because they don't know what you're currently paying. They're comparing generic usage assumptions to market plans. You need a comparison between your actual current rates and the market. That comparison requires reading your bill.

The Right Way to Check

Your bill has everything needed to answer this definitively:

1. Usage rate (c/kWh): Your current cost per unit of electricity
2. Supply charge (c/day): Your fixed daily connection cost
3. Billing period usage (kWh): How much you actually consumed
4. Tariff structure: Flat rate, time-of-use, or demand

Upload your bill to Fix Your Bill. We extract all four of these data points. We run them against live plan data for your postcode from the CDR feed. We show you the comparison. What you're paying now, what the cheapest available alternative would cost for your usage profile, and the annual saving.

No guessing about your usage. No generic assumptions. No comparison against the wrong tariff structure. A real answer based on your real bill.

What "Overpaying" Actually Means

There's a precision problem with the word "overpaying." Compared to what?

Compared to the cheapest plan in your state? Almost everyone is overpaying by that standard, because the cheapest available plan is usually something with conditions or limitations that don't suit every household.

Compared to the best plan available for your specific usage profile, in your specific postcode, with no conditions you can't meet? That's the meaningful comparison. That's the question we answer.

The number we give you is the real saving available to your household right now, not a best-case theoretical saving, but a comparison between your current plan and the best realistic alternative available to you.

Upload your bill when you want that number rather than the average. If you'd rather read on first, the loyalty penalty on Australian electricity bills explains why staying put costs money in the first place, is my electricity plan too expensive is the version of this question for a plan you never actively chose, and what the ACCC found on electricity loyalty penalties sets out what the regulator has and has not measured.

Fix Your Bill reads your bill directly (usage figures, tariff rates, billing period) and compares against every plan available in your area via the government's Consumer Data Right feed. Results reflect currently available offers.