>So, when you send out the invoice, it can show something like:
>

>     Amount Due:  $100.00
>     Amount if paid by (net 30 date):  $90.00
>

No sir,
Amount due will be remain same in both cases, the customer pays or not.
If he pays within 30 days then 10% of due amount will be added in his ledger through journal voucher.