To view or export a full breakdown of a Client’s balance history, go to People > Clients > select the Client > Accounting and click View full history. From there, you can generate PDF statements for either:
Available Balance History — every Lesson, Ad Hoc Charge and payment as it affected the Available Balance, including items that haven't been invoiced yet.
Invoice Balance History — the ledger view: Invoices raised, payments received and balance adjustments.
A Client's full Balance history, with the option to generate statements highlighted.
The two statements will not usually match, because they measure different things. See here for the difference between them, so you send the Client the one that answers their question.
These statements are especially helpful if a Client requests a detailed summary of their account activity with your company.