Hi there, vishvajeet.

I understand how you want to add more digits after decimal in QuickBooks Online. Allow me to provide insights about this.

The Currency & Exchange Rates list is updated to display the new currency with the most recent rate from AHS Markit. Hence, QuickBooks Online uses 7 digits after decimal. 

For more details about the exchange rate and how it's calculated, please see this article: Learn about exchange rates in QuickBooks Online.

I recognize the importance of adding more than seven decimal points to the exchange rate. I recommend sending feedback on adding this feature for consideration in future enhancements.

Ideas like this will help us identify the feature our customers need the most. Let’s log in to your company to submit your feedback.

1. Go to the Gear icon at the top and choose Feedback under Profile.
2. Type the information of how you wish the program to work.
3. Then, click the Next button.
   
   

Please don’t hesitate to post a comment below if you still need help with QBO. Please know the Community and I are here to assist further.