Estimate
Definition
An approximate statement of the likely cost of a job before the final price is settled, common in trades and services. Unlike a firm quote, it can change as the scope of work becomes clearer.
Related Terms in Invoicing & Sales
Invoice Number
A unique identifier assigned to each invoice in a sequence, used to reference, track and reconcile it. Many tax systems require invoice numbering to be sequential and gap-free.
Debit Memo
A document that increases the amount a buyer owes a seller after the original invoice, for additional charges, undercharges or price corrections. It is the opposite of a credit memo.
Self-Billing
An arrangement where the customer, rather than the supplier, prepares the invoice on the supplier's behalf under an agreement. It is used where the buyer has better data on quantities or prices, such as commissions or royalties.
Accounts Receivable Aging
A report grouping unpaid customer invoices by how long they have been outstanding — current, 1–30 days, 31–60 days and so on. It shows where collection effort is needed and flags likely bad debts.
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