Within the system there are a number of invoice types that can be utilised. There may be some confusion about the differentiation in a 'Final' invoice and a 'Pre final' invoice.
Pre-final - This is an invoice similar to a 'Final invoice' that gets created at the beginning of a job. Designed to include all relevant costs, it will then be automatically converted to a 'Final invoice' upon completion of the job itself.
Final - This invoice will close the job down. If you have raised the job from an estimate, the final invoice will automatically be filled in according to the estimate pricing. If you have any deposit, interim, or retention invoices, these will be deducted from this value.