What is Order-to-Cash (O2C)?

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Order-to-Cash (O2C) — also called Lead-to-Cash or Quote-to-Cash — is the complete business process that covers everything from receiving a customer order through to collecting the resulting cash. It spans order management, fulfilment, invoicing, collections, and cash application.

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O2C is one of the three core finance process cycles, alongside Procure-to-Pay (P2P) and Record-to-Report (R2R). It directly determines how quickly a business converts sales into collected cash.

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The O2C process

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Order receipt and validation. A customer order is received and validated — credit limit checked, pricing confirmed, inventory available.

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Order fulfilment. Goods are shipped or services are delivered.

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Invoicing. An invoice is issued to the customer. Accuracy here is critical — an incorrect invoice creates a dispute that delays payment.

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Collections. The invoice enters the collections cycle. Automated reminders are sent as the due date approaches.

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Dispute management. Customer disputes are investigated and resolved. Disputes that are not resolved quickly extend DSO.

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Cash receipt and application. Payment arrives from the customer. It is matched to the open invoice and posted to clear the AR balance.

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Reconciliation. AR subledger is reconciled to the GL. Unapplied cash is investigated and allocated.

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Why O2C efficiency matters

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Every day of delay in the O2C cycle is a day of working capital tied up in receivables. Reducing DSO by 5 days in a business with $100 million in annual revenue frees up approximately $1.4 million in cash.

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Related: Accounts receivable (AR) · Days Sales Outstanding (DSO) · Cash application · Collections management