u have to pay ur gst
so this figure will comes out of ur entries of sales
now question is gst paid by third party
so u dont have gst liability
now entry will come for that
gst a/c xxxxx (amout of ur gst paid )
To thirid party a/c xxxxx (amout equal to gst paid)
so ur gst amount will get zero
now whatever tax paid by third party u have to
pay them by cash or chque for that
entry will be
Third party
To cash / bank ( as per amoutn applicable )