An invoice can be cancelled if it was created by mistake, has not yet been paid or posted, and you need to keep it in your accounting software. To learn how to create a credit note, click here.
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If you do not want to create a credit note, but you do not want to delete an invoice either, you can cancel it. A cancellation is a negation; the idea is to balance the quantity of products/services so that the total amount is zero.
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Add a new line to the invoice, write ‘Cancellation’ as the name and add a negative amount so that the final total of the invoice is 0.
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Billdu does not have a dedicated function for cancelling an invoice.