Thanks for visiting the QuickBooks Community, Sohail2525!

I hope you're having a great day so far! I'll help you check to see why your A/R Aging Detail report is showing a balance.

The aforementioned report will show a balance if there were unpaid invoices as of your report date. This does not necessarily mean that they are outstanding, but the dates of their payments can be after the “as of” date.

Another reason is you may be looking at payments that aren't linked to the invoices in question, so you'll want to open them to see which invoices they're applied to.

Let me know if you can discover more information, which will help us figure out the reason for having a balance. I'll be here to continue assisting you. Enjoy the rest of the day!