Basics
Creating a Proforma Invoice: When You Need It and How It Should Look
A proforma invoice isn\
"Can you send me a proforma invoice?" - Many business owners hear this question but aren't sure what exactly it means. A proforma invoice looks like a regular invoice but is legally something completely different. In this guide, I'll explain when you need a proforma invoice and how to create one correctly.
What Is a Proforma Invoice?
A proforma invoice is a document with informative character. It looks like an invoice but is not a payment request and has no accounting relevance.
The Term "Proforma"
"Pro forma" comes from Latin and means "for the sake of form" or "as a matter of form." A proforma invoice therefore only serves formal purposes without the legal consequences of a real invoice.
Key Differences from a Regular Invoice
| Feature | Proforma Invoice | Regular Invoice |
|---|---|---|
| Payment request | No | Yes |
| Accounting relevant | No | Yes |
| Input tax deduction possible | No | Yes |
| VAT relevant | No | Yes |
| Must be archived | No | Yes (varies by jurisdiction) |
When Do You Need a Proforma Invoice?
There are several typical use cases:
1. Customs Clearance for Exports
The most common use case. For exports outside your trade zone, customs requires a proforma invoice for:
- Determining the value of goods
- Calculating customs duties and import taxes
- Documenting the shipment
2. Advance Payments and Deposits
When a customer should pay before delivery, but a "real" invoice cannot yet be issued:
- Basis for advance payment
- No accounting entry needed
- Real invoice follows after delivery
3. Quotes and Cost Estimates
In some industries, quotes are formatted as proforma invoices:
- Clear presentation of costs
- More binding than an informal quote
- Easily convertible to a real invoice
4. Samples and Product Specimens
For free sample shipments:
- Customs still needs a value
- Avoids confusion with gifts
- Documents the commercial value
5. Warranty and Replacement Deliveries
For free replacement deliveries:
- Documentation for customs
- Proof of goods value
- No payment obligation
What Must Be on a Proforma Invoice?
Required Information
| Element | Description |
|---|---|
| Label | Clearly "PROFORMA INVOICE" |
| Sender | Complete company address |
| Recipient | Complete customer address |
| Date | Issue date |
| Proforma invoice number | Separate number series recommended |
| Goods description | Detailed description |
| Quantity and unit | Number and unit of measure |
| Unit price | Price per unit |
| Total value | Total sum (important for customs!) |
| Currency | USD, EUR, etc. |
| Delivery terms | Incoterms (EXW, FOB, CIF, etc.) |
| Country of origin | Origin country of goods |
Additional for Customs Clearance
- Customs tariff number (HS Code)
- Weight (gross/net)
- Number of packages
- Mode of transport
Sample Proforma Invoice
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PROFORMA INVOICE
No. PI-2026-001
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Shipper: Sample Corp 100 Industrial Way Chicago, IL 60601 USA Tax ID: 12-3456789
Consignee: ABC Trading GmbH Industriestraße 10 70173 Stuttgart Germany
Date: January 8, 2026 Terms: FOB Chicago Country of Origin: USA
---
| Item | Description | HS Code | Qty | Unit Price | Total |
|---|---|---|---|---|---|
| 1 | Industrial Pump Type A | 8413.70 | 2 pcs | $1,500.00 | $3,000.00 |
| 2 | Spare Parts Kit | 8413.91 | 2 sets | $250.00 | $500.00 |
---
Total Value: $3,500.00 Net Weight: 187 lbs Gross Weight: 209 lbs Packages: 2 cartons
---
Note: This is a proforma invoice for customs purposes only. This document is not a request for payment. A commercial invoice will be issued upon shipment.
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Proforma Invoice vs. Other Documents
Proforma Invoice vs. Quote
| Proforma Invoice | Quote |
|---|---|
| Invoice format | Free format |
| For customs/advance payment | For sales initiation |
| Often binding | Usually non-binding |
Proforma Invoice vs. Commercial Invoice
| Proforma Invoice | Commercial Invoice |
|---|---|
| Informative | Payment request |
| Before delivery | At/after delivery |
| Not for accounting | Accounting relevant |
Proforma Invoice vs. Order Confirmation
| Proforma Invoice | Order Confirmation |
|---|---|
| Value indication focus | Confirms the order |
| For external purposes (customs) | For internal documentation |
Numbering Proforma Invoices
Separate Number Series
It's recommended to maintain proforma invoices in a separate number series:
- PI-2026-001, PI-2026-002, ... (Proforma Invoice)
- PF-2026-001, PF-2026-002, ... (Proforma)
Why a Separate Number Series?
- No gaps in the real invoice number series
- Clear separation for accounting
- Easier assignment
Avoid Common Mistakes
Mistake 1: Booking Proforma Invoice as Real Invoice
The proforma invoice is NOT an accounting document. It must not be:
- Recorded as revenue
- Used for input tax deduction
- Replace the real invoice
Mistake 2: No Clear Label
The proforma invoice MUST be clearly identifiable as such. Write clearly and prominently:
- "PROFORMA INVOICE"
- "FOR CUSTOMS PURPOSES ONLY"
- "NOT A REQUEST FOR PAYMENT"
Mistake 3: Incorrect Value Declarations for Customs
For exports, the declared value is crucial for duties. Incorrect declarations can lead to:
- Additional payments
- Penalties
- Delays in customs clearance
Mistake 4: Never Replacing Proforma with Real Invoice
After delivery, a proper invoice MUST follow. The proforma invoice does not replace the obligation to issue an invoice.
Proforma Invoice in International Trade
Incoterms on the Proforma Invoice
Delivery terms (Incoterms) are important for exports:
| Incoterm | Meaning | Risk/Cost From |
|---|---|---|
| EXW | Ex Works | Pickup at seller |
| FOB | Free on Board | Loading at port |
| CIF | Cost, Insurance, Freight | Destination port |
| DDP | Delivered Duty Paid | Delivery address |
Customs Tariff Numbers (HS Codes)
Correct commodity codes are important for customs:
- 6 digits internationally uniform
- Additional digits vary nationally
- Research at your customs authority website
Conclusion: Using Proforma Invoices Correctly
Key points summarized:
✅ Proforma invoice is NOT a real invoice ✅ Main uses: Customs, advance payments, samples ✅ Clearly label as "PROFORMA" ✅ Use a separate number series ✅ Issue real invoice after delivery
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Frequently asked questions
Is a proforma invoice a real invoice?
No, a proforma invoice is not a real invoice in the legal sense. It's an informative document without a payment request and has no accounting relevance. The customer cannot claim input tax deduction with it.
When do I need a proforma invoice?
Typical use cases are: Customs clearance for exports, advance payments before delivery, samples and product specimens without charge, and warranty or replacement deliveries.
Does the proforma invoice need to show VAT?
Since the proforma invoice is not a real invoice, it doesn't need to show VAT. The stated amount is typically the net goods value for customs purposes.
Can I convert a proforma invoice into a real invoice?
Yes, after delivery is completed, you should issue a proper invoice. This will have its own invoice number from the regular number series and is relevant for accounting.
What number does a proforma invoice get?
It's recommended to use a separate number series for proforma invoices, e.g., PI-2026-001. This prevents gaps in the real invoice number series.