Start by listing your after-tax income and regular costs, including rent or mortgage, electricity, water, insurance, groceries, transport, school expenses and subscriptions. On the Sunshine Coast, allow for location-based differences in housing and commuting costs, and check recent local prices rather than relying on national averages. Add irregular expenses such as car registration, medical bills, rates and holiday spending, then set aside a buffer for unexpected costs where possible. You can also check whether you qualify for concessions or payments through servicesaustralia.gov.au and compare energy plans through the official Energy Made Easy website.