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Ho to calculate the due date field based on original estimate and start date field values

Hi Team,


How to set the due date automatically when issue field values set to start date and original estimate that time duedate field set to Startdate + Original estimate.

I have done as below for the issue transitioned from open to in progress


Open to In progress 

Open to inprogress.PNG

here trackingdate is

tracking due date.PNG

{{#=}}{{issue.timetracking.originalEstimateSeconds}} / (60 * 60 * 8){{/}}

 here due date is

due date.PNG

{{issue.Start date.plusBusinessDays(Trackingduedate.asNumber).jiraDate}}

But there is no change in the due date and the rule is executing successfully.

Please let me know the reason for this


2 answers

Hi @Charan goud 

Also, if your team has something like a service-level agreement (SLA) for time KPI, you can try to set SLA Timer using JSM (for support tickets) or one of the apps from Atlassian marketplace (for Jira Software or Jira Core issues).

The tool for the SLA timer will give the target date in the issue custom field based on your individual criteria.

For example, you expect the ToDo-Done flow to be completed in 2 days.
Then, once the issue got ToDo status, the system will calculate the expected date of delivery as today + 2days\

Then according to the target-date, you can choose an automation rule to set the due date. 

This solution is not easy but can help.


Hi @Zoryana Bohutska _SaaSJet_ ,

Thanks for your support.

We want to add the original estimate time to the start date only. Then we can set the due date automatically when we set the start date and original estimate.

I don't want to add the present date(Now+2days).

Is there any chance to set the date as per the above-mentioend criteria?


Hi @Charan goud 

At this time, created variables cannot be used in functions, and so the Due Date remains unchanged.  Please see/watch this backlog item for details:

As a work-around, I suggest doing the math in one step to set to the created variable, and then assign that to Due Date in the edit.


Best regards,


Hi @Bill Sheboy ,

Thanks for your support and got clarified this query.

Please let me know how can we add the original estimate field + Start date using the math function.

Is it possible to add both these fields using math expression?


Hi @Charan goud 

I was suggesting to do all your math together when you try to set Due Date:

{{issue.Start date.plusBusinessDays(issue.timetracking.originalEstimateSeconds.divide(28800))}}

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