What is a Commercial Invoice?
A commercial invoice is a legal document issued by the seller to the buyer in international trade that shows detailed information, value, and commercial terms of the goods being sold. As the foundation of customs procedures, this document is mandatory for determining the tax base, maintaining statistics, and processing payments in import and export operations.
For Turkish exporters, the commercial invoice is critically important in terms of both Turkish customs legislation and the legal requirements of the buyer s country. Incorrectly or incompletely prepared invoices can lead to delays at customs, additional costs, and even rejection of the shipment.
Mandatory Fields
Information that must be included in a commercial invoice according to international standards:
- Seller Information: Company s full trade name, address, tax number, phone, and email
- Buyer Information: Importer company s full name, address, and tax ID if applicable
- Invoice Number and Date: Each invoice must have a unique number
- Order/Contract Reference: Buyer s order number or contract reference
- Goods Description: Detailed description of products, HS code, model number
- Quantity and Unit: In standard measurement units such as pieces, kilograms, meters
- Unit Price and Total Amount: In the agreed currency
- Delivery Terms (Incoterms): International delivery rule such as FOB, CIF, EXW
- Payment Terms: Payment method and maturity information such as cash, deferred, letter of credit
- Country of Origin: Country where the goods were manufactured
- Loading and Arrival Information: Port of loading, port of arrival, mode of transport
Differences from Proforma Invoice
The commercial invoice and proforma invoice are frequently confused, but there are important differences between them:
Proforma Invoice
A proforma invoice is an estimated quotation document issued before the sale. It has no legal binding force and cannot be used for customs declarations. It provides cost estimates to the buyer and is used as a reference document for opening letters of credit and applying for import permits. It bears the notation "Proforma Invoice."
Commercial Invoice
The commercial invoice is a legal document that certifies a finalized sale. It is used as the basis for customs declarations and tax calculations. It creates payment obligations and is recorded in accounting books. It reflects the actual value and conditions of the goods. It bears the notation "Commercial Invoice."
Legal Requirements
Legal requirements that Turkish exporters must consider when preparing commercial invoices:
- Turkish Commercial Code: Determines the formal requirements and obligation to issue invoices.
- Customs Law: Regulates the content of invoices to be attached to export declarations.
- Foreign Exchange Legislation: Determines foreign currency invoicing obligations and foreign exchange purchase certificate requirements.
- VAT Law: The invoice must be properly prepared for VAT exemption application in exports.
- Buyer Country Legislation: Some countries may require special notations, consular endorsement, or preparation in specific languages.
Incoterms and Invoice Preparation
The delivery term on the invoice determines how the value of goods is calculated and directly affects the customs duty base:
- EXW (Ex Works): Only the cost of goods is reflected on the invoice. All transportation and insurance costs are borne by the buyer.
- FOB (Free on Board): Includes the cost of goods plus expenses up to the loading port. One of the most commonly used delivery terms in international trade.
- CIF (Cost, Insurance and Freight): Includes the cost of goods, freight, and insurance. Many countries calculate customs duties based on CIF value.
- DDP (Delivered Duty Paid): All costs and taxes are included. The highest total amount on the invoice is seen with this delivery term.
The Incoterms rule stated on the invoice must be consistent with other documents such as the packing list and bill of lading.
Currency and Payment Terms
Currency Selection
The invoice is typically prepared in a widely accepted international currency such as US Dollar, Euro, or British Pound. Invoicing in Turkish Lira is also possible but caution should be exercised against exchange rate fluctuations. The currency symbol or ISO code (USD, EUR, GBP) must be clearly indicated.
Payment Methods
Payment terms specified on the invoice may include:
- Cash in Advance: Full payment before shipment
- Letter of Credit: Bank-guaranteed payment method
- Documents Against Payment: Payment upon presentation of documents
- Open Account: Payment after delivery of goods
- Deferred Payment: Payment at a specified term such as 30, 60, or 90 days
Common Errors
Common mistakes to watch for when preparing commercial invoices:
- HS Code Errors: Writing incorrect or incomplete HS codes leads to wrong customs duty calculations.
- Value Declaration Inconsistency: Invoice values significantly different from market value are questioned at customs.
- Incoterms Ambiguity: Not clearly stating the delivery term or omitting the year (e.g., CIF Istanbul Incoterms 2020).
- Missing Signature and Stamp: Some countries require wet signature and company stamp.
- Missing Origin Information: Origin declaration is required to benefit from preferential tariff applications.
- Document Inconsistency: Information discrepancies between invoice, packing list, and bill of lading cause serious problems.
Practical Tips for Turkish Exporters
- Prepare the invoice in English; if necessary, prepare a second copy in the buyer country s language.
- Verify the HS code from the Ministry of Trade s current tariff schedule.
- If you are registered in the e-invoice system, you can also issue your export invoices as e-invoices.
- For letter of credit transactions, prepare the invoice in exact compliance with credit terms; even the smallest discrepancy may be reserved by the bank.
- It is recommended to prepare at least 3 copies of the invoice: one for the buyer, one for customs, and one for your own archive.
- Specify exact amounts on the invoice to prevent issues arising from exchange rate differences.