A gas bill usually shows your usage in megajoules (MJ), the price charged per MJ, and a daily supply charge for connecting your property to the network. It may also include meter-reading details, the billing period, GST, discounts, concessions and any overdue balance or payment arrangement. If the bill is based on an estimated reading, compare it with your meter and provide an actual reading to your retailer if possible. For help checking a charge or tariff, contact your retailer, or compare plans through Energy Made Easy.