Part payment of gst charged bill (not advance)

Hi,

Suppose i have a job worker bill of 10000 + 500 gst @ 5% = 10500 on 1st August 2018. Now can I pay him 5000 on 1st August and pay the balance 5500 at a later date? Does this have any impact on GST calculation etc. I know that we have to pay GST on advance, but this will not be an advance incase bill has already been generated.

Thanks

Sunil