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Once you have selected the billable items from Unbilled and created invoices, you will be taken to a draft invoice view. If only one invoice was created, you will be taken to that invoice. If multiple invoices were created, you will be taken to the draft invoice list.

Write On / Off

Billable Time

For Billable Time, this can be done by changing the amount value at the total amount level or for each row. If calculated at the total amount level, the system calculates how much write-on/off there is for each row based on the hours and billable value per combination. If calculated at the row level, it will calculate the write-on/off for that time entry only.

Fixed Fee

Unlike Billable Time, you cannot carry individual time entries and cannot do this manually. Instead, the system calculates the write-on and off based on the difference between the time entries recorded on the work and the total Fixed Fee amount set on the work item. The system will only calculate the write-on/off if the Fixed Fee item is marked as a Final Bill.

You will see a positive or negative number appear under the Write On/Off column of that work item.

Carrying Time

Billable Time

If you decide that you don't want to bill all the time entries listed on the invoice and want to bill them at a later time, you are able to carry the time entries.

This can be done one at a time or in bulk by clicking on the checkbox and clicking the button option that says 'Carry'.

Once the invoice is approved, these time entries can be found back in the Unbilled section. If you want to re-include time entries before approving the invoice, click the checkbox again and click 'include'.

Fixed Fee

Unlike billable time, you cannot carry individual time entries. Instead, you can carry the amount of the invoice. This can only be done if the Fixed Fee Item is marked as a progress bill (see toggle section below for information on progress vs final bills). To carry adjust the amount to be a lower value.


For Fixed Fee items, you can adjust the amount value. If the item is marked as a Final Bill, changing the amount value will increase the total amount of the invoice. It will not change the write-on/off value. If the item is marked as a Progress Bill, it performs the carry action.


Expenses can be manually written on or off by changing the amount column. They currently can't be carried when on a Fixed Fee item (to come) but if recorded against a Time and Materials work item, can be carried exactly like Billable time.

Final Bill Toggle

Next to each work item on the Invoice is a toggle. When toggled on, it indicates that will be the final invoice for that work item. For Fixed Fee items, this means the Fixed Fee work will no longer appear back in unbilled after the invoice is approved. For time and materials work, any time entries added after the invoice is approved will not appear back in Unbilled.

The Final Bill Toggle is toggled off by default for Time and Materials work items and on by default for Fixed Fee items.

If there are billable items for the same work (e.g expenses and time) and you toggle it on for one of the items, it will turn the toggle on for all billable items attached to that work item that is on the invoice.

Overriding Information on the Invoice

If there's information that you'd like to change for the invoice, you can manually update the following items to affect changes in the invoice:

  • Title of the Billable Item: Open the corresponding work item > details tab > add in the new in the External Name field. This can also be set on the template to be used when creating future work.

  • Description: Can be overridden by opening the 'Presentation' tab in the draft invoice and clicking the white box under 'Description, clearing the text, and entering new text.

  • Tax: Open the 'Presentation' tab in the draft invoice and the dropdown within the invoice, you can select any tax rate that has been entered in Settings.

  • Payment Instructions: Open the 'Presentation' tab in the draft invoice, the payment instructions can be updated on the side menu

  • Invoice Date: Select a new date from a custom date picker within the draft invoice under the 'Presentation' tab. Ensure you're picking a date within the open accounting period.

  • Payment Date: Select a different Net Option by selecting a name date from a custom date picker from the 'Presentation' of an invoice.

  • Email: The email found in the billing details section will be visible. This can be updated by navigating to the Bill To contact and selecting a different email in the Billing Details section.

  • Billable Time: For Time & Materials Work, choose to display a summarized view or list out all time entries.

Invoice Actions

When viewing the draft invoice, you are able to approve or approve and send.

Approve and Send

Using the feature will allow you to both approve and send the invoice straight away. The invoice will come from the user who clicks send. Before it is sent, the system will confirm the to and from email addresses before sending and allow you to cancel sending. If you cancel sending, the invoice will be in an approved state.

Sending issues

There are some issues that will stop the invoice from being able to be sent. When these occur, you will be told what the issue is and how to fix it:

  1. No Accounting Period
    If the firm has not set an accounting period you will need to set it in Billing Settings before sending invoices

  2. Invoice Date not open in an Open Accounting Period
    If the invoice date is not in an open accounting period, you will not be able to approve or send the invoice. You will need to select an invoice date in the current accounting period

  3. Negative Invoice
    If the invoice total = a negative value. You will need to resolve the issues and retry

  4. Missing Details
    If you try to send an invoice with missing details you will be told which details are missing and need to add them. If you try to approve, you will just be warned.

Once successfully sent, you will find the email and a PDF version of the invoice in their sent folder in Triage. Due to privacy and the need to ensure all dollar values remain private, invoices are not automatically added to timelines. You can manually add it to a timeline or @mention colleagues through comments in the email.

Once sent, the invoice moves from the Draft list (or approved state) and into Awaiting for Payment list.


In addition to approving and sending, you can choose to just approve the invoice. Once approved, you are able to perform the following actions:


The same rules apply as above and the same checks will be made to ensure the invoice is legal. If you need to change the invoice date or add missing details, you are able to edit the invoice by putting it into a draft state.


If you use QuickBooks Online or Xero, you can prepare invoices in Karbon and then export them and import them into the appropriately formatted exports for your system.

To do this, click 'Export to QBO' or 'Export to Xero' from the approved list or from the triple dots at the bottom of the invoice. Once you have done this, the invoice will move into the Exported section.

Please keep in mind: You cannot export and then send an invoice. Each invoice can only be exported or sent.

Editing an Approved Invoice

If you want to update the invoice to either fix an error that is stopping them from sending it or to make other changes, you are able to edit the invoice. If there are missing details, you will be prompted to do this from the modal. You can also edit the invoice from the triple dots. Once the edit invoice action has been clicked, the invoice will move back into Draft. It will then need to be Approved/Approved or Sent again.

There are some scenarios where approved invoices cannot be edited:

  • Work item or Contact associated with the invoice has been deleted:

  • If there is a draft invoice existing for a work item on the approved invoice (e.g. since approving the invoice, a draft invoice has been created):

Voiding an Approved Invoice

If the invoice has not been sent and you'd like to void the invoice you are able to do this by clicking the triple dot option from the approved invoice list. Once voided, the invoice will move into the Voided section.

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