You can enable the Discount feature to apply percentage discounts to your invoices, miguel8.
Here's how:
- Click the Gear icon at the top and select Account and Settings.
- In the left menu, go to Sales, then click the Edit (✎) icon in the Sales form content section.
- Turn on Discount.
- Click Save and Done.
Once enabled, you can apply percentage discounts to invoice subtotals by selecting % as the discount type.

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