How to adjust the excess payments made by the customer?
Excess payments usually happens when a customer downgrades from higher plan to a lower plan. When a customer downgrades, Zoho Billing will prorate the You can use the excess payment received in the upcoming invoices for the customer. For example, you can configure to settings to automatically apply the excess payments for the upcoming invoices.
To configure your settings to automatically apply excess payments for the invoices, enable the checkbox Apply excess payments to offline Subscriptions under Preferences > Invoice.