Billing is the process of calculating charges, issuing an invoice or statement and recording what a customer owes for supplied goods or services. It connects commercial terms and delivery evidence to the accounts receivable process.
What does billing involve?
Billing can include identifying a billable event, calculating quantity and price, applying discounts and taxes, generating the invoice, delivering it to the customer and posting the receivable.
Billing versus invoicing
Billing is the broader process. Invoicing is the creation and delivery of a specific payment request. Billing may also include statements, usage calculation, adjustments and collection status.
What determines the amount billed?
The contract, accepted quotation, order, delivery evidence, rate card, usage record and approved changes should support the amount. The calculation basis must be reproducible.
What controls reduce billing errors?
Use approved master data, versioned pricing, duplicate checks, tax validation, billing cut-offs and review thresholds. Separate unauthorized commercial changes from routine invoice generation.
What should be monitored?
Track invoice accuracy, unbilled revenue, billing delays, rejected invoices, credit notes, disputes and time from delivery to invoice. A fast billing cycle is useful only when the invoices are correct.
