A funded period with a remaining advance
USD 2,000 opening plus USD 500 confirmed top-up gives USD 2,500 available. Applications USD 1,200 and USD 800 leave USD 500 unapplied.
Payment reconciliation
Free Prepaid Service Balance Calculator
A prepaid service balance tracks received money that has not yet been applied to approved charges. Reconcile its movement over a period without treating a requested top-up or future work estimate as money available.
What you can do here
Reconcile a verified opening service advance, confirmed top-up and three approved applications, showing remaining funds or excess application.
Built for real invoice workflows
Document each approved application before using the balance in the next invoice reconciliation.
Preparing your calculator with today’s date…
Calculation notes
How the result is calculated
Available advance = verified opening balance + confirmed top-up. Sum the three approved applications. Remaining advance = max(0, available − applied); excess application = max(0, applied − available). This is an operational money reconciliation, not revenue recognition, a wallet, a credit-note calculation or a refund decision.
Formulas and examples reviewed October 2, 2026. Illustrative figures; no tax or contractual determination.
A request is not a receipt
USD 500 opening, no received top-up and USD 700 proposed application exceeds available funds by USD 200. A requested USD 300 top-up does not remove that shortfall until confirmed.
Questions about this calculation
Does the remaining advance expire or get refunded?
The calculator decides neither. Use the actual agreement and supported document process; keep any expiry or refund decision separate from this arithmetic.
Can I deduct the advance twice?
No. Tie each application to an invoice or charge reference and check prior applications before reducing a balance. This calculator does not know your existing ledger.
How to use it
1
Enter the verified opening unapplied advance and confirmed top-up.
2
Enter approved applications to identified charges.
3
Review remaining funds or excess application against the ledger.
Why it helps
Keep requested and received top-ups separate.
Distinguish monetary advances from an hours allowance.
Expose applications that exceed the available advance.
Next step
From free tool to live invoice workflow.
Use the result when creating your invoice in InvoiceAgent. Planner setup links carry the settings they describe into a draft. Review your dates, amounts, PDF, and reminder settings before scheduling.
Related workflows
Move from the quick answer into the rest of the invoice system.
Keep the advance movement ledger
Keep the advance movement ledger
Record received top-ups and referenced applications.
Review the opening and movement
Review the opening and movement
Check evidence and prevent applying the same advance twice.
Invoice templates
Invoice templates
Use the result inside invoice formats that are ready for clients and easier to automate.
Knowledge base
Knowledge base
Review the billing concepts behind the numbers before they go onto a live invoice.
Profession pages
Profession pages
See how freelancers, consultants, and agencies apply the same calculator output in different workflows.