Can I issue partial refunds on Gumroad?
No, sorry. Not right now. Maybe in the future. We'll let you know if we change this.
If you need to issue a partial refund to your customer you can:
A) Refund them 100% through the customers tab. Here's how.
B) Reach out to your customer and ask them for their PayPal, Venmo, or Square Cash ID. You can then pay them the difference.