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Billing Logic

Specific billing logic governs the automation for many of your business's most important tasks, including ordering, payments, and provisioning.

Credit and Debit Notes

Use credit and debit notes to modify immutable (non-Draft) invoices. Credit and debit notes maintain consistent and accurate financial records for easier auditing and tax compliance.

Invoice Management

After invoice generation, you can easily manage your clients' invoices, including payment, splitting invoices, cancelling them, and more.

Transactions

WHMCS records all of your transactions. When you view the list of transactions, you can also check your Stripe™, Stripe Dynamic Payments, and PayPal® balances.

Invoice Immutability Errors

Troubleshoot and resolve errors and warnings about invoice immutability.

Invoices

The Invoices tab in General Settings allows you to configure how WHMCS generates and sends invoices and applies late fees.