Hi @pmohan,
Thank you for your post and welcome to the Community Forum! I applaud your proactiveness in wanting the answers to these questions before creating your account. This subject is a little outside my area of expertise, but I was able to research a bit and find information for you.
From what I understand, GST is levied as a percentage of the fees on all transactions, whether physical or digital and whether goods or services. A consolidated invoice will be shared with you every month. If I understand this correctly, it would not be necessary to provide us with your GST registration information unless you believe that you are subject to a credit. PayPal is required to charge the GST up front, but some merchants/freelancers may be eligible for refunds - please consult your GST advisor for details.
All information regarding Micropayments is available at this link. Micropayments is only available on a Business account. To apply for the option, you can contact Customer Service by clicking Contact at the bottom of the PayPal website and following one of the listed options. One thing to note - if the prices for your art fluctuate and you have transactions that are greater than the threshold, those transactions would also be subject to the Micropayments rate. It's only advantageous for you if all or the vast majority of your transactions are expected to be small.
I hope this information answered the majority of questions you have!
Olivia
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