Invoice with Advance Payment (2026): Can You Use a Proforma Invoice?

Asking for advance payment sounds simple — until you need to document it properly. Many freelancers and small businesses get stuck on one question: should you issue a real invoice or just send a proforma?

The answer depends on timing, tax rules, and where you operate. In some countries, issuing the wrong document at the wrong moment can trigger early tax liability or accounting issues.

This guide explains how to handle advance payments correctly, when to use a proforma invoice, and what a proper advance payment invoice sample should look like.

When You Need an Invoice for Advance Payment

Advance payments (also called deposits or prepayments) are common in freelance projects, construction, rentals, and custom work.

In many EU countries, you are typically required to issue an invoice once the payment is received, because VAT often becomes due at that moment.

Example:
You’re a designer in Italy and request a 30% deposit before starting work. Once the client pays, you usually need to issue an invoice reflecting that advance — even if the work isn’t finished yet.

In the US, the process is more flexible. A freelancer in Texas can request a deposit and document it later, as long as it’s properly recorded in accounting.

You request a €1,000 advance before starting a project.

• In the EU → this often triggers VAT and requires an invoice
• In the US → it depends on your accounting method

Can You Use a Proforma Invoice for Advance Payment?

Short answer: yes — but only before payment is made.

A proforma invoice is not a legal or tax document. It’s essentially a request for payment.

When it works well

Use a proforma when you want to request a deposit or confirm pricing before work begins.

Example:

Project total — $2,000
Advance payment (50%) — $1,000

The client pays based on this document.

When it’s NOT enough

Once the payment is received:

• In many EU countries → you are expected to issue a tax invoice
• The proforma alone is not sufficient

This is a common mistake: freelancers send only a proforma and never follow up with a real invoice.

What an Advance Payment Invoice Must Include

Once you move from proforma to a real invoice, the requirements are similar to a standard invoice — with one key difference: it must clearly show that it’s an advance payment.

It’s also good practice to explicitly label the document as:

“Advance Invoice” or “Deposit Invoice”

A proper invoice should include:

• invoice number
• date
• supplier and client details
• description of service
• clear reference to advance payment
• amount received
• tax (VAT/GST if applicable)
• remaining balance (optional but recommended)

Example wording

Instead of:

“Payment received — $1,000”

Use:

“Advance payment (50%) for website development project — $1,000”

This avoids confusion in accounting and tax reporting.

How Tax Works for Advance Payments

This is where things get important.

EU (VAT systems)

In many EU VAT systems, VAT becomes due when the advance payment is received, not when the project is completed.

Example:
You receive €1,000 advance
→ you typically need to declare VAT on that €1,000 in your next VAT return

US (no VAT system)

In the US:

• There is no VAT
• Advance payments are typically treated as income based on your accounting method (cash or accrual)

Example:
A freelancer using cash accounting records income when the payment is received.

Step-by-Step: How to Handle Advance Payment

You’re a freelance developer working on a €3,000 project.

First, you send a proforma invoice:

Total project — €3,000
Advance (30%) — €900

The client pays €900.

Now you issue an official invoice:

Advance payment (30%) for development services — €900
VAT (if applicable) — €171
Total — €1,071

Later, when the project is finished, you issue a final invoice:

Total project — €3,000
Minus advance paid — €900
Remaining balance — €2,100

At this stage, many freelancers prefer not to calculate everything manually — especially when dealing with VAT and partial payments. Tools like InVault can automatically generate advance invoices and keep them linked to the final invoice, which helps avoid mistakes.

Sample Advance Payment Invoice

Invoice No: INV-2026-210
Date: April 20, 2026

Supplier:
Alex Brown
Freelancer

Client:
Digital Agency Ltd.

Description:
Advance payment (30%) for website development project

Amount: €900.00
VAT (19%): €171.00

Total: €1,071.00

Payment status: Paid (advance received)

Proforma vs Invoice: Key Difference

A simple way to think about it:

• Proforma = request for payment
• Invoice = legal and tax document

Typical workflow looks like this:

1. Send proforma
2. Receive payment
3. Issue invoice

Skipping step 3 is one of the most common and costly mistakes.

Special Rules to Be Aware Of

Advance payments can affect your tax timing and cash flow — especially in VAT systems where you may need to pay tax before completing the work.

In cross-border EU transactions, reverse charge may apply, meaning:

• you do not charge VAT
• the client accounts for VAT instead

Example:

Advance payment — €1,000
VAT — €0 (reverse charge applies)

E-invoicing is also becoming more common in many countries. While proforma invoices remain informal, official invoices may need to follow structured digital formats depending on local regulations.

Cross-Border Advance Payments

If you work with international clients, the logic stays the same — but tax treatment changes.

Example (EU B2B):
You receive an advance from a VAT-registered client in another EU country.
→ Reverse charge may apply (the client accounts for VAT instead of you)
→ You still issue an invoice, but without VAT

Example (US client):
→ No VAT applies
→ Invoice simply documents the payment

Currency and Language

Advance invoices can be issued in any agreed currency.

Example:

Advance — $1,000

If you are in the EU, you may still need to report VAT in euros, even if the invoice is in another currency.

Language is flexible — English is widely accepted in international business as long as the invoice is clear.

Deadlines

In VAT systems, invoices are typically issued shortly after receiving payment, since tax reporting is tied to that moment.

Delays can lead to:

• incorrect VAT reporting
• penalties

Record Keeping

Always keep:

• proforma invoices
• advance payment invoices
• final invoices

Typical retention periods:

• EU: up to 10 years
• US: around 3–7 years

Common Mistakes

A frequent mistake is treating a proforma as a final invoice.

Another is forgetting to issue an invoice after receiving an advance — especially in VAT systems where tax obligations arise early.

Freelancers also sometimes forget to deduct the advance in the final invoice, which can lead to overcharging.

FAQ

Can I use a proforma invoice for advance payment?
Yes, but only as a request for payment. You still need to issue a real invoice after receiving the money.

Do I need to pay VAT on advance payments?
In many EU VAT systems, yes — VAT is typically due when the payment is received.

What should an advance payment invoice include?
It should clearly indicate that it’s an advance or deposit, include tax if applicable, and reference the related project.

Can I issue an invoice before receiving payment?
Yes — this is common when requesting deposits.

How do I show the remaining balance?
In the final invoice, subtract the advance already paid from the total project amount.

Tools That Make This Easier

Handling advance payments manually can get confusing — especially when you need to track deposits, VAT, and final balances across multiple projects.

Many freelancers use invoicing tools that:

• connect proforma and final invoices
• calculate tax automatically
• track paid vs remaining amounts

You can try InVault to create both proforma and advance payment invoices without mixing them up. It helps keep everything structured, especially when working with international clients and different tax rules.