Set up a discount or promo code you can apply to invoices or offer on your booking page.
Open Discounts and click + New discount.

Give it a name or code (e.g. WELCOME10), choose percentage or fixed amount, and set the value.
Save. Apply it to any invoice with Add discount, or share the code with clients.
Your discount is ready to apply at invoicing — or hand the code to a client to use themselves.