Billing calculators

Use our billing calculators to compare fees and charges on your bill.

Please note: The below billing calculators reflect the 2025-26 water pricing. We are currently working to include the newly released prices for 2026-27.

As a result, the calculators only provide the best available estimate for total charges across the 2025-26 financial year.

Our billing calculators are designed to help customers compare current fees and charges with those from previous years. Customers can select any two years for comparison, while unregulated and groundwater customers can also evaluate the impact of a one-part versus a two-part tariff.

Regulated calculator

Calculator icon Work out your current charges and compare to previous years

Regulated bill calculator

Unregulated calculator

Calculator icon Compare years and see the difference on a one-part or two-part tariff

Unregulated bill calculator

Groundwater calculator

Calculator iconCompare years and see the difference on a one-part or two-part tariff

Groundwater bill calculator

fees and charges icon 2025-26 Fees and charges

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Fees and charges

WaterNSW acknowledges the traditional custodians of the lands and waters on which we work and pay our respects to all elders past, present and emerging. Learn more