前金請求書テンプレート

When to use a deposit invoice template

A deposit invoice is sent before work begins, requesting partial payment as a commitment from the client. The most common structure is 50% upfront and 50% on delivery, though 30/70 and milestone-based splits are also standard. The deposit invoice covers your material costs and a portion of your time before you invest the full engagement — it aligns the client's financial commitment with the risk you are taking on.

Deposit invoices are especially important for project-based work with significant upfront costs: custom fabrication, large design projects, software builds, event production. They are also a professional signal to new clients — anyone who refuses to pay a reasonable deposit is either not serious about the project or represents a payment risk you should evaluate carefully before committing your time.

What's included

A single deposit line item at 50% of project value, notes explaining the payment structure, and a clear designation that the balance is due on delivery.

• Deposit line item: "Deposit (50%) — [Project Name]" as a single, clear row
• Notes section: explains that the balance will be invoiced separately on project completion
• Net 14 default: deposits should be collected quickly before work begins
• Professional framing: language that makes the deposit feel standard, not adversarial
• Numbered invoice: use a dedicated series (DEP-001) to distinguish deposit invoices from final invoices

How to customize this template

Replace "Project Phoenix" in the line item description with your actual project name — specificity helps the client's accounting team match the payment to the right budget line. Update the rate to reflect 50% of your total project fee (or whatever your agreed deposit percentage is). In the Notes field, state explicitly what triggers the balance invoice: "The remaining balance of [amount] will be invoiced on delivery and sign-off of all deliverables." This sets expectations and reduces end-of-project disputes about when payment is due. Use a consistent deposit invoice numbering scheme (DEP-001, DEP-002) separate from your standard invoice series so you can track which deposits have been collected and which projects have outstanding balances.

How deposit invoices protect both sides

A deposit invoice is not a sign of distrust — it is a standard business practice that protects both the provider and the client. For you, the deposit funds your initial time and materials and reduces the risk of a client walking away mid-project after you have already committed resources. For the client, the deposit invoice creates a formal record of the project commitment and the agreed scope — if the scope changes, both parties have a documented starting point. Clients who work with professional vendors regularly expect deposit invoices and are comfortable paying them. The conversation about a deposit is also an opportunity to confirm that the client is organized and financially prepared to execute the project on the agreed timeline.