Your payout for each booking is:
Booking total − Commission − Refunds (if any)
You can see the exact breakdown when you click into a payout. Each booking shows the original amount, any refund that was issued, the commission deducted, and your final payout amount.
If a coupon was used, it's already reflected in the booking total — you're not charged extra for discounts you offered.
Your commission rate is set when you join Kipgo and is visible in Profile → Account.