Journal Entries

As per section 15 sub section (3)(a) of CGST act 2017 value of supply shall  not be include any  discount 

So  50000- 5000 =45000  (10% discount given on 50000)

Value of supply 45000

J.E  will be 

Purchase  A/c  Dr       45000

CGST        A/c  Dr         4050

SGST        a/C  dR        4050

To  Sundry Creditors                       53100

(  Being  purchase  of  -----) 

Payment entry 

Sundry Creditors A/c  Dr                53100

To Bank               A/c  Cr                                 53100

Being   payment  made after 10% discount ) 

I have corrected above entry  for your reference .