Bill Calculator

Use this page to calculate your bill here.

Simply input all details below and click on the next button. Please note that certain charges or tariff rebates will not appear here. Use of the Calculator is made at the user’s own risk and subject to acceptance of the disclaimer below.

Please be advised that if you qualify under the Domestic rate you are to choose the Residential rate and input 0 as ‘number of persons registered’.



This disclaimer relates to the utility consumption calculator (the “Calculator”) made available by Automated Revenue Management Services Ltd (ARMS) through its website ( and the associated pages.

The Calculator is an online service made available by ARMS as a self-help tool for independent use and for illustrative purposes only. ARMS does not guarantee its applicability or accuracy of the calculation in any particular user’s circumstances. Use of the Calculator is made at the user’s own risk and subject to acceptance of this disclaimer.

ARMS makes no warranty or representation of any kind, whether express or implied, including without limitation any warranty concerning the accuracy, adequacy or completeness of the information, material and/or the results to be obtained from using the Calculator, or fitness for any particular purpose. The calculations are not intended to be relied on and should not be deemed to be a replacement for an actual utility bill. All examples are hypothetical and are for illustrative purposes.

Results may vary from the actual utility bill for a number of reasons, including some parameters (such as feed-in tariffs) being omitted from the Calculator. Users should ensure that the data (account number, type of account, number of persons, etc) inputted into the Calculator fields is the data provided to ARMS as it appears on the user’s utility bill

ARMS shall not entertain any claims relating to errors, omissions or other inaccuracies resulting from the use of the Calculator, or from the reliance on information procured therefrom, and in no event shall ARMS be liable, under any legal theory, for any direct, indirect, special, incidental, consequential or any other damages arising out of the use of the Calculator.

By using the Calculator, users acknowledge and accept this disclaimer of warranty and liability, which shall be construed as limiting ARMS’ liability to the maximum extent permitted at law. The entire risk arising out of the use or performance of the Calculator remains with the user.