Hi Saurav,
Thank you for posting!
As of today, there isn't an API that can provide the outstanding balance/ running total for the open billing period, but we are discussing this internally. We don't have an ETA on the ask but certainly understand the value this can bring to the customer.
Check this link for detail info about API:
https://azure.microsoft.com/en-in/documentation/articles/billing-usage-rate-card-overview/
It would be great if you could leave a detailed ask here:
feedback.azure.com/forums/170030-billing
Best Regards
Sadiqh Ahmed
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