Sales Ledger
The accounting record that tracks every customer invoice, credit note, and payment individually, with one account per customer. The total of all customer balances equals the accounts receivable figure on the balance sheet.
A sales ledger is the accounting record that tracks every credit transaction with customers - invoices raised, credit notes issued, and payments received - organized into a separate account for each customer. The running balance on each account shows exactly what that customer still owes. The sum of all customer balances equals the accounts receivable total on the balance sheet, making the sales ledger the detailed source behind one of the most closely watched figures in any business's finances.
What the Sales Ledger Contains
Each customer gets their own account in the sales ledger. When an invoice goes out, the balance on that account increases. When a payment arrives or a credit note is applied, it decreases. The result is a live statement for every customer: which invoices are open, how long they have been outstanding, and what the current balance is.
The aged debtors report is the sales ledger's most practical output. It groups outstanding balances into time bands - current, 30 days, 60 days, 90 days and beyond - turning a flat list of amounts owed into a prioritized collection schedule. A business with an accurate, up-to-date ledger can run this report at any point and see exactly where its cash flow pressure lies.
The sales ledger is a subsidiary ledger: it holds the customer-by-customer detail that the general ledger only summarizes in a single debtors control account. Reconciling the two regularly is how errors surface - unallocated payments, unapplied credit notes, and invoices posted to the wrong customer all appear as a mismatch between the subsidiary total and the control account.
Ledger and accounts receivable
The sales ledger is the record; [accounts receivable](/resources/glossary/accounts-receivable) is the total balance that record produces. The ledger tracks every transaction for every customer; accounts receivable is the aggregate figure that appears on the balance sheet. One is the working tool, the other is the financial position it reports.
Sales Ledger and Purchase Ledger
The sales ledger and purchase ledger work as a pair. The sales ledger records what customers owe the business - money coming in. The purchase ledger records what the business owes its suppliers - money going out. Both are subsidiary ledgers beneath the general ledger, providing the detail behind accounts receivable and accounts payable respectively.
Both ledgers matter for cash flow. The gap between when the sales ledger is collected and when the purchase ledger falls due is where working capital is won or lost. Collect from customers faster than payments go out to suppliers, and cash builds. Let that gap reverse, and a business can show a healthy profit while running short of money.
For project-based businesses - construction contractors, AV integrators, office furniture suppliers - keeping the sales ledger current through each stage of a job is how stage invoices are tracked accurately. A payment left unallocated on a multi-stage project can make a customer appear overdue when they have already settled, distorting the aged debtors report that credit control relies on.
Allocate payments on receipt
The most common sales ledger error is a payment received but not matched to the invoice it settles, leaving the customer's balance showing money they have already paid. Allocating payments at the point of receipt - not in a batch at month end - keeps every customer account accurate and prevents chasing money that is already in the bank.
Zigaflow's invoicing feature creates and tracks customer invoices across every stage of an order or project, keeping the records that feed into a business's sales ledger without manual re-entry.
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