This pdf contains a sample invoice. Please feel free to copy and change it to suit your business.

The essential elements are all there:

• date
• invoice number
• what you're charging for
• anything you're not charging for but want them to know about
• how they can pay
• when you expect them to pay
• your contact details and official information (in Australian your Australian Business Number, or Australian Company Number, for example).

In the Australian Consultants' Guide I go through the details of why and where and how to use your invoice most effectively.

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