How does GST setup works on Purchase side, specially in case of RCM? I want to book my GST on purchases as my input only when payment is done.

Hi there, lakshayjindal18-.

Good to see you here! We just have to make sure that you've added your GSTIN so that it'll calculate taxes on purchases. 

Please refer to these articles for more details:

• Set up tax
• Setting up QuickBooks for GST

Comment below if you need more help with this. Have a great day!