← All guides

BUSINESS GUIDES

Statement of Account vs Invoice: Differences and Example

September 20, 2026

An invoice requests payment for a particular supply or billing stage. A statement of account summarises activity across a customer account, such as invoices, payments and credits over a period. It helps the customer see the overall balance and identify items that still need attention.

The distinction matters because a statement should not create a second charge for invoices already issued. It is a summary linked to the underlying documents, not a replacement for the original billing records.

Statement of account versus invoice

FeatureInvoiceStatement of account
Main purposeBill a specific transaction or stageSummarise account activity and balances
ReferencesIts own invoice numberRelevant invoice, receipt and credit references
Typical detailItems, quantities, prices and applicable taxOpening balance, activity and closing balance
Payment focusAmount due on that invoiceOutstanding amounts across the account

A statement can be helpful when a customer has several unpaid invoices, has made one payment covering multiple items, or wants to reconcile its records with yours.

Worked statement of account example

This fictional statement covers October. The opening balance represents earlier unpaid invoices, which should remain identifiable in the supporting records.

DateReference and activityChargePayment or creditBalance
1 OctoberOpening balance$300—$300
5 OctoberInvoice INV-061$500—$800
10 OctoberReceipt PAY-018—$400$400
18 OctoberInvoice INV-064$250—$650
22 OctoberCredit note CN-007—$50$600

The closing balance is $300 + $500 − $400 + $250 − $50 = $600. Before sending the statement, check that the $400 receipt and $50 credit have been matched appropriately. A correct running total alone does not prove that each invoice’s outstanding balance is correct.

Show what is overdue separately

The account’s total outstanding balance may include invoices that are not yet due. Include invoice due dates or provide an open-item summary so the customer can distinguish current items from overdue ones. Do not describe the entire closing balance as overdue unless it is.

For example, a $600 closing balance might include $350 overdue and $250 due next month. A reminder should identify the $350 needing attention now and preserve the correct due date for the other $250.

Check payments, credits and missing documents

Reconcile receipts to your bank or payment records, then compare the allocation with any remittance advice. If a customer says a payment is missing, request the date, amount and reference before sending another demand. Unallocated receipts can make an account appear more overdue than it really is.

Credits should have their own clear references. Learn the difference between a payment and a pricing adjustment in the credit note guide. A customer’s short payment is not automatically a credit note or an agreed discount.

Wording for a statement email

“Attached is your statement of account to 31 October. It shows an outstanding balance of $600 across the listed documents. Please check it against your records and let us know if a payment or credit is missing. The due dates for individual invoices remain as shown.”

When chasing a specific overdue item, attach or link the relevant invoice and state its outstanding amount. Use the polite unpaid-invoice follow-up guide for wording suited to a reminder rather than a routine account summary.

Keep invoice and statement numbering distinct

Use separate document labels so a statement is not mistaken for another invoice. The same invoice number should appear consistently in the original bill, customer statement and payment record. See invoice numbering best practices if your references are becoming difficult to trace.

Frequently asked questions

Can a statement replace an invoice?

It normally serves a different purpose. Keep the invoices that explain the underlying charges and provide copies when needed.

Does a statement prove payment?

It can show a recorded receipt, but a receipt or payment confirmation is the more direct record of that payment.

Should I include paid invoices?

An activity statement may include them; an open-item statement focuses on outstanding items. Label the format clearly.

For individual customer charges, prepare a separate document using the invoice generator.

Comments

Popular posts from this blog

What Information Should an Invoice Include?

Social Media Management Invoice Template and Monthly Example

Invoice vs Quotation: What Is the Difference?