Start with monthly electricity consumption
Use the kWh consumption shown for the billing period on your bill or account and enter the monthly amount you want to estimate.
Using an actual billing-period figure makes comparisons more useful, particularly when comparing seasonal consumption.
How the residential tariff tiers work
The calculator applies the residential tariff recorded in its reviewed sources, with one tier through 6,000 kWh per month and another rate for consumption above that level.
When consumption exceeds 6,000 kWh, the calculator does not reprice all usage at the higher tier; each portion is calculated within its applicable tier.
Meter service and VAT
The calculator adds the meter-service fee associated with the selected breaker-capacity band and displays the taxable subtotal separately.
VAT is then calculated from the percentage entered so the energy charge, meter fee and tax can be reviewed independently.
Why can the actual bill differ?
An actual electricity account can include previous balances, adjustments, credits or other account-specific items that are outside the calculator's base estimate.
Tariffs and fees may also change officially, so check the review date and linked sources when a final amount matters.
Checklist before calculating
- Monthly electricity consumption in kWh
- Meter breaker-capacity band
- VAT percentage used for the estimate
- Actual bill or account data for comparison