# Billing ## Billing Refund - [POST /billing-refund](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/adv.-billing/billingrefund.md): Generate the necessary Billing adjustments for an Invoice refund and create a Distribution if needed. ## Billing Auto-Apply - [POST /billing-auto-apply](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/adv.-billing/billingautoapply.md): Auto Apply Payment based on specified configuration options. ## Billing Apply Payment Category - [POST /billing-apply-payment-category](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/adv.-billing/billingapplypaymentcategory.md): Using the ListPremApplyPaymentCategory Operation to get a list of payments and additional configuration, have On Accout and PremPayment information updated. ## Billing Apply Payment On Account Category - [POST /billing-apply-payment-on-account-category](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/adv.-billing/billingapplypaymentonaccountcategory.md): Using the PremPaymentOnAccount List as a basis for configuration, have On Accout and PremPayment information updated. ## Billing Refund - [POST /billing-refund](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/billing/billingrefund.md): Generate the necessary Billing adjustments for an Invoice refund and create a Distribution if needed. ## Billing Auto-Apply - [POST /billing-auto-apply](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/billing/billingautoapply.md): Auto Apply Payment based on specified configuration options. ## Billing Apply Payment Category - [POST /billing-apply-payment-category](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/billing/billingapplypaymentcategory.md): Using the ListPremApplyPaymentCategory Operation to get a list of payments and additional configuration, have On Accout and PremPayment information updated. ## Billing Apply Payment On Account Category - [POST /billing-apply-payment-on-account-category](https://vbapi-docs.vbasoftware.com/openapi/vbasoftware.api/billing/billingapplypaymentonaccountcategory.md): Using the PremPaymentOnAccount List as a basis for configuration, have On Accout and PremPayment information updated.