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                   58504 Points
                   Joined June 2010
                
               
			  
			  
             
            
             Hi Shahan,
In GSTR-4 (for Composition taxpayers), purchase details are NOT auto-populated.
Here’s the key point:
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GSTR-4 is primarily for reporting outward supplies (sales) and tax paid under composition scheme. 
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Purchase details do not get auto-populated from your purchase invoices or other returns. 
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You have to manually enter the details of inward supplies (if required) in the relevant sections. 
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However, since composition taxpayers cannot claim Input Tax Credit (ITC), purchase details are mainly for information only and do not impact tax liability. 
When will purchase details auto-populate in GST returns?
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In normal taxpayers' returns like GSTR-1 and GSTR-3B, purchase data can auto-populate from GSTR-2A/2B. 
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But for composition taxpayers filing GSTR-4, no auto-population of purchase data happens. 
So, if you want purchase data to show in GSTR-4, you need to enter it manually (if required).