Accounts Receivable: The Complete Guide

Accounts receivable is money owed to your business by customers for work already delivered and invoiced. On the balance sheet it is a current asset. In practice it is the gap between doing the work and having the money, and the size of that gap determines how much cash your business needs to operate.

How a receivable is created and cleared

• Work is delivered
• An invoice is raised, recording revenue and increasing accounts receivable
• The invoice sits open through its terms
• The customer pays, increasing cash and reducing receivables
• The payment is applied to the specific invoice so the balance clears

That last step is the one most often done badly. Payments recorded as general income rather than applied against a specific invoice leave the receivable open forever and double-count the revenue.

Why receivables decide your cash position

Revenue is recognised when the invoice is raised. Cash arrives later. The longer that gap, and the larger your revenue, the more working capital the business needs simply to keep operating.

This is why growing businesses run short of cash while showing a profit. Growth increases receivables before it increases the cash available to fund them.

The aging report

Your primary AR tool. It lists every open invoice grouped by how overdue it is, typically current, then successive periods past due. It answers three questions at a glance: how much is owed, how much is late, and which customers account for it.

A clean aging is essential and frequently is not clean. Credit balances, non-trade items, deposits, and payments not applied all distort it, and once distorted it stops being used.

The metrics that matter

• Days sales outstanding: the average time from invoice to collection
• Percentage of receivables past due, and how that trend moves
• Customer concentration: what share is owed by your largest one or two customers
• Bad debt as a proportion of revenue

The controls

• Invoice the day work completes, not in a monthly batch
• Apply every receipt to a specific invoice
• Run the aging weekly and work it in a consistent sequence
• Set credit terms deliberately rather than by default, with limits on new customers
• Separate whoever raises invoices from whoever receives and records payments, where headcount allows

Bad debt

Some receivables are never collected. Where an amount becomes uncollectable it is written off, reducing receivables and recording an expense. Businesses with significant credit sales may carry an allowance for expected losses rather than waiting for specific accounts to fail. Whether that treatment applies to you depends on your circumstances and reporting requirements.

Financing against receivables

Receivables can be used to raise cash before customers pay, through invoice finance or factoring arrangements. These convert a timing problem into a cost, and whether that trade is sensible depends on your margin and the alternative. It is a funding decision rather than a collections solution.

What good AR management looks like

Invoices out immediately. Terms stated and enforced consistently. A weekly routine on the aging. Payments applied correctly so the aging stays trustworthy. Days sales outstanding tracked as a number rather than a feeling. And escalation decided in advance rather than in frustration.

Design the process before the first invoice

Accounts receivable begins with the sales agreement, not the reminder email. Define the customer, billing contact, scope, price, milestone or service period, invoice timing, payment terms, acceptable payment methods, dispute process, and any credit limit before work starts.

Collect purchase-order or vendor-portal requirements early. A correct invoice can still be rejected if it lacks a required reference or is sent to the wrong system. Store customer billing rules where the invoicing team can use them instead of relying on one salesperson’s inbox.

Evaluate credit and set terms deliberately

Credit terms are a decision to finance the customer for a period. Consider expected volume, payment history, references or credit information when appropriate, concentration, margin, and the business’s ability to absorb delay. New customers may warrant deposits, milestones, card payment, or smaller limits.

Document who can approve terms and exceptions. Sales should not extend longer terms informally after the accounting process is configured. Review limits when customer volume grows, invoices become overdue, ownership changes, or disputes recur.

Create an invoice that can be paid

Invoice promptly after the contractual billing event. Include the correct legal entities, addresses, purchase reference, service period, description, quantity, rate, tax treatment, due date, payment instructions, and contact for questions. Attach required evidence at the same time.

Use unique invoice numbers and preserve revisions. A corrected invoice should show what changed and avoid creating two collectible documents for the same work. Confirm delivery through the customer’s required channel and retain the transmission record.

Record the receivable correctly

Posting an invoice generally increases revenue and accounts receivable under accrual accounting, subject to the applicable recognition rules. Customer deposits, deferred revenue, retainers, credits, and non-trade balances may require different treatment. Do not force every customer-related receipt or amount into trade receivables.

The customer subledger should show invoices, credits, payments, and remaining balances. Its total must agree with the general ledger control account. Avoid direct journals to the control account because they create balances without customer-level detail.

Run a consistent collections cadence

Send the invoice immediately, a courteous reminder before or at due date when appropriate, and a clear follow-up after it becomes overdue. Increase frequency and seniority as the balance ages or a promise is missed. Record every contact, response, dispute, and promised payment date.

Collections messages should identify the invoice, amount, due date, and payment method. Ask a specific question and set a next action. Repeatedly sending the same generic statement without resolving a billing problem does not improve collection.

Manage disputes separately

Classify disputes by cause, such as price, quantity, service quality, missing support, purchase-order issue, customer master error, or unapplied payment. Assign the internal owner who can resolve the cause. Accounts receivable should coordinate, but it cannot decide whether contracted work was delivered correctly.

Track disputed and undisputed portions separately where appropriate. A dispute on one line should not automatically stop collection of the supported balance. Measure dispute age and source because repeated billing defects require a process fix upstream.

Apply cash to the correct invoices

Use remittance information, customer, amount, bank reference, and open items to apply each receipt. Keep unapplied cash in a visible queue with owner and age. Do not record an unidentified customer payment as new revenue merely to clear the bank reconciliation.

Short payments may reflect a credit, fee, withholding, dispute, or error. Research the difference and record the correct resolution. Overpayments may require application to another invoice, a customer credit, or refund based on the facts and agreement.

Reconcile receivables every month

Tie the customer aging to the general ledger control account at the same date. Reconcile cash receipts to bank deposits and payment platforms. Review unapplied cash, customer credits, negative balances, duplicate invoices, old items, and journals posted to the control account.

Test cutoff around month end so invoices and credits appear in the correct period. Review subsequent receipts for evidence about collectibility. Keep a signed reconciliation with explanations for open differences rather than carrying a plug forward.

Worked example of the cash gap

Assume a business invoices an illustrative $100,000 during a month and incurs $72,000 of payroll and supplier costs to deliver the work. If customers pay the following month, the income statement may show a positive margin while cash must fund the $72,000 before collections arrive.

If growth raises monthly invoicing to $140,000 with similar timing, receivables and the funding need can grow before cash collections catch up. Faster invoicing, deposits, milestone billing, effective collections, and suitable terms can reduce the gap.

Read the aging report as an action list

Start with the largest and oldest balances, but also identify invoices blocked by internal errors and customers that broke a payment promise. Separate current, overdue, disputed, credit, and unapplied amounts. Confirm that aging begins from the appropriate invoice or due date used by the report.

Assign an owner and next action to each material item. A clean aging is not one with no old balances. It is one whose balances are valid, explained, and actively managed.

Metrics for an AR dashboard

• Total receivables and cash collected
• Days sales outstanding calculated consistently
• Amount and percentage past due
• Aging by bucket and customer
• Customer concentration
• Disputed invoices and dispute age
• Promised payments missed
• Unapplied cash and customer credits
• Write-offs and expected-loss estimates
• Average time from billing event to invoice delivery

Use trends and drill down to causes. DSO can improve because collections accelerated or because sales fell. Past-due percentage can rise because one large invoice became late. Metrics direct attention, while customer-level detail explains the result.

Controls that protect receivables

Separate invoice creation, credit approval, cash handling, and write-off approval where possible. Restrict changes to customer bank instructions and credit terms. Require support for credits, refunds, and write-offs. Review changes to invoices after issuance.

For a small team, use owner review of the aging, credits, write-offs, refunds, and unapplied cash. Reconcile bank activity independently of the person applying receipts when possible. Preserve the audit trail for corrections.

Create an escalation ladder

Define the action that follows each aging or risk trigger. The ladder may progress from reminder to direct contact, management involvement, credit hold, stop-work decision, payment plan review, or formal collection steps. The appropriate path depends on the contract, customer, amount, dispute, and available remedies.

Assign authority for credits, payment plans, service suspension, and write-offs. Document exceptions. A salesperson should not promise a credit that accounting cannot support, and accounting should not stop work without involving the business owner responsible for the relationship.

Review the complete customer account

Before contacting a customer, review every open invoice, credit, unapplied receipt, dispute, and recent transaction. Confirm that the invoice was delivered to the correct contact and portal with required support. Reconcile the customer’s statement with the ledger when the customer claims a different balance.

Record the customer’s response and the next promised action. If the business must correct an invoice, issue the correction promptly and restart the collection timeline from a clear position. Repeated internal billing failures should be reported by cause.

Questions for the weekly AR meeting

• What cash is expected this week and what evidence supports it?
• Which promised payments were missed?
• Which invoices are blocked by our own error?
• Which customers exceed approved terms or limits?
• How much cash is unapplied?
• Which balances may require credit, allowance, or write-off review?
• Who owns each next action and date?

Keep the meeting tied to the invoice-level list and the cash forecast. A total overdue number without owners and dates does not create collection. Close resolved items so the list remains credible.

Document the month-end AR conclusion

The reconciliation should state whether the aging agrees with the general ledger, identify open differences, and list material overdue, disputed, credit, and unapplied balances. Record subsequent receipts and any collectibility review. Attach the reports used so the conclusion can be repeated.

Close the period only after invoice, credit, receipt, and cutoff issues are understood. If an estimate or adjustment is required, document the facts, method, approval, and later reversal or write-off process. Do not remove an old balance solely to make the aging look clean.

Carry the open-item list into the next weekly collections meeting and cash forecast. Accounting, collections, and forecasting should use the same invoice-level facts even though each process asks a different question.

Review customer master data periodically. Confirm legal names, billing contacts, portal requirements, terms, limits, tax information where relevant, and inactive accounts. Clean master data prevents avoidable invoice rejection and keeps collection activity tied to the correct customer.