Invoice-to-cash and order-to-cash: key terms explained

Order to cash

The order-to-cash process covers the full cycle from receiving a customer order to collecting payment. Invoice-to-cash is the subset of order-to-cash that begins once an invoice has been issued. 

• Order to cash (O2C / OTC)

  The complete sequence of business activities from receiving a customer order to collecting payment. Includes order management, credit assessment, fulfilment, invoicing, receivable management, and cash posting.

• Invoice to cash (I2C)

  The portion of the order-to-cash process that begins when an invoice is issued and ends when payment has been received and applied to the correct account. Sometimes used interchangeably with accounts receivable management.

• Invoice-to-cash process

  The structured workflow covering invoice generation, delivery, dispute resolution, payment reminder activity, collections, and cash application. A well-defined process reduces Days Sales Outstanding and limits write-off exposure.

• Order-to-cash process

  The broader operational and financial workflow underpinning credit sales. Finance leaders use order-to-cash metrics to evaluate efficiency across the full revenue cycle, not just collections.

Credit and payment terms

According to Intrum's European Payment Report 2026, corporate customers are given an average of 43 days to pay but settle after 63, a 20-day gap that has widened from 16 days in 2023.

• Payment terms

  The conditions agreed between a seller and a buyer governing when an invoice must be paid. Common structures include net 30, net 60, and net 90. Terms may also include early payment discounts, penalty interest, or milestone-linked stage payments.

• Credit terms

  The conditions under which a seller extends credit to a buyer, typically including the credit limit, the payment period, and any prepayment or security requirements. Usually set after a credit assessment and reviewed periodically.

• Credit limit

  The maximum outstanding credit a seller will extend to a specific customer at any one time. Exceeding the limit triggers a review before further orders are fulfilled. Informed by payment history, financial statements, and sector benchmarks.

• Early payment discount

  A pricing incentive offered to encourage payment before the standard due date. For example, 2/10 net 30 means the buyer can take a 2 per cent discount if payment is made within 10 days, or pay the full amount within 30 days.

• Credit assessment

  The process of evaluating a customer’s creditworthiness before extending credit. Draws on financial accounts, credit bureau reports, trade references, and payment history. Informs the credit limit and payment terms offered.

Invoicing and payment

Invoice accuracy directly affects how quickly payment is received. Errors, missing PO numbers, or incorrect details are frequently disputed by the customer’s accounts payable team, extending the payment cycle before any collections activity begins.

• Invoice

  A formal document issued by a seller requesting payment for goods or services delivered. A complete invoice includes both parties’ details, a unique invoice number, issue date, description of goods or services, amount due, payment terms, and banking details.

• Pro forma invoice

  A preliminary invoice issued before the final terms of a transaction are agreed or goods are shipped. Used in international trade for customs or import documentation purposes. Not a demand for payment.

• Credit note

  A document issued by a seller to reduce the amount owed on an invoice, either partially or in full. Issued in response to returns, billing errors, or agreed adjustments. Must be reconciled against open invoices during cash application.

• Payment reminder

  A communication sent to notify a customer that an invoice is approaching or has passed its due date. Effective sequences begin before the due date and escalate in tone as the invoice ages. A well-timed reminder resolves many overdue invoices before formal collections action is needed.

• Overdue invoice

  An invoice that has not been paid by its contractual due date. Delays often arise from administrative issues, disputed line items, or cash flow timing rather than unwillingness to pay. Investigating the cause before escalating leads to faster resolution with less damage to the relationship.

• Unpaid invoices

  Invoices that remain outstanding, whether within terms or beyond them. Tracking unpaid invoices by age and value is a core function of accounts receivable management. A high volume relative to revenue points to process inefficiency or deteriorating payment behaviour.

Receivable management

Intrum's European Payment Report 2026 found that 62 per cent of businesses say late payments have caused them to miss their own supplier deadlines. This illustrates how late payments shape how businesses are treated by their own suppliers.

• Receivable management

  The set of processes and controls used to manage a company’s accounts receivable portfolio, covering credit assessment, invoice generation, payment term setting, collections, dispute resolution, and cash application. Effective receivable management reduces the time between invoicing and receipt of cash.

• Accounts receivable (AR)

  The total value of amounts owed to a business for goods or services delivered but not yet paid for. Appears as a current asset on the balance sheet. Its composition, age, and concentration are closely watched by credit managers, auditors, and lenders.

• Aged receivables report (debtor ageing)

  A report that categorises outstanding invoices by how long they have been unpaid, typically in buckets of 0–30, 31–60, 61–90, and over 90 days. The primary tool for prioritising collections activity and identifying accounts at risk of becoming uncollectable.

• Days Sales Outstanding (DSO)

  A measure of how many days, on average, it takes to collect payment after a sale. Calculated as: (Accounts Receivable / Total Credit Sales) x Number of Days. A rising DSO indicates customers are taking longer to pay or that collections efficiency is declining.

• Cash application

  The process of matching incoming payments to the correct open invoices in the accounts receivable ledger. Errors here can make invoices appear overdue when payment has already been received, triggering unnecessary collections activity.

• Bad debt

  An amount owed to a business considered unrecoverable and written off from the accounts receivable ledger. Represents a permanent loss of revenue. Bad debt provisions estimate the portion of current receivables expected to become uncollectable.

• Write-off

  The accounting process of removing an uncollectable receivable from the ledger. Does not preclude further collection efforts. It is an accounting treatment recognising the diminished probability of recovery.

Credit management and risk

Intrum's European Payment Report 2026 found that fraud prevention is now practised by 26 per cent of businesses, up from 23 per cent the previous year, part of a wider strengthening of credit management discipline across Europe.

• Credit management

  The strategic function encompassing all controls a business uses to manage payment risk. Sets credit policy, assesses customer creditworthiness, monitors receivables, and oversees collections. In larger organisations it is a standalone function; in smaller ones it sits within finance.

• Credit policy

  A set of rules governing how a business extends credit to customers. Specifies eligibility criteria, credit limits by segment, standard payment terms, and when overdue accounts are escalated. A documented policy reduces inconsistency and provides a basis for escalation decisions.

• Credit risk

  The risk that a customer will fail to pay an invoice in full and on time. Varies by customer, sector, geography, and economic conditions. Managed through credit assessment, credit limits, payment term structures, credit insurance, and active monitoring of payment behaviour.

• Credit insurance

  An insurance product that protects a seller against the risk of a customer failing to pay. Covers a proportion of the outstanding balance in the event of insolvency or protracted default. Intrum's European Payment Report 2026 found that 26 per cent of European businesses now use credit insurance, up from 19 per cent in 2021.

• Late payments

  Payments made after the contractual due date. Intrum's European Payment Report 2026 shows that businesses across Europe are receiving 12.13 per cent of revenues late, above the 12.08 per cent threshold they consider sustainable. In Hungary (14.52 per cent) and France (14.16 per cent), the exposure is materially higher.

Collections and recovery

Intrum's European Payment Report 2026 found that 29 per cent of businesses say late payments have hindered investment in strategic growth initiatives over the past 12 months. Collections performance is not just a finance question, it has direct implications for commercial strategy.

• Collections

  The activities undertaken to recover unpaid amounts from customers. Spans from automated payment reminders through to formal demand letters, external agency referral, and legal action. Effective collections match the approach to the value at stake and the likely cause of non-payment.

• Internal collections

  Collections activity conducted by the business’s own finance or credit team. Typically used in the early stages of an overdue account, before referral to an external agency or legal process.

• External collections

  Collections activity conducted by a third-party agency or specialist on behalf of the creditor. Referral typically occurs when internal efforts have been exhausted or when the outstanding balance justifies specialist intervention.

• Dunning

  The systematic process of sending escalating communications to a customer with an overdue invoice. A dunning sequence typically begins with a pre-due-date reminder and progresses through formal demand letters to notification of legal action. Can be manual or automated.

• Dispute resolution

  The process of investigating and resolving a customer’s objection to an invoice. Common disputes involve quantity, pricing, delivery, or quality. Unresolved disputes are a significant cause of overdue invoices and should be tracked separately from non-payment cases.

• Debt collection

  The recovery of unpaid amounts, whether by internal teams or external specialists. In B2B contexts, the term typically refers to the later stages of the collections process, where internal methods have not produced payment.

Cash flow and working capital

Intrum's European Payment Report 2026 found that 57 per cent of businesses missed growth targets because of late payments. This connects what happens in accounts receivable directly to what happens in the boardroom.

• Working capital

  The difference between a company’s current assets (including accounts receivable) and current liabilities (including accounts payable). A business with strong invoice-to-cash performance typically carries a healthier working capital position than one with aged receivables or slow collections.

• Cash flow

  The movement of money into and out of a business over a given period. Late payments and overdue invoices reduce operating cash flow directly, creating a gap between reported profit and available cash.

• Payment gap

  The difference between the payment terms offered and the time customers actually take to pay. According to Intrum's European Payment Report 2026, the B2B payment gap stands at 20 days: customers are given 43 days on average but settle after 63. It has widened from 16 days in 2023.

• Liquidity

  A company’s ability to meet short-term financial obligations as they fall due. A business can be profitable on paper while experiencing a liquidity shortage if receivables are not converting to cash quickly enough. Invoice-to-cash efficiency is one of the primary levers for maintaining adequate liquidity.