Invoicing & Iran's Tax System for Angle and Channel Sales: Getting the Type Right

The product diversity in the angle and channel market is high: rolled or pressed, equal-leg or unequal-leg, light or heavy channels, and multiple sizes. This diversity makes accurate invoice registration in the Taxpayers’ System require greater precision, especially when the transaction is tonnage-based and high-value.

Four points to check on every invoice

The diversity in the types and sizes of angles and channels makes accurately registering the product code in the Taxpayers’ System more demanding.

Why an incorrect product code creates problems

If you register a rolled product code for a pressed angle, or mistake a light channel for a heavy one, this discrepancy will appear in the quarterly value-added tax report and may lead to follow-up with the Tax Administration. Since transactions involving these sections are usually tonnage-based, the error is repeated on a larger scale.

Practical steps before submitting the invoice

1. Match the precise section type (angle/channel, equal-leg/unequal-leg, light/heavy, rolled/pressed) with the product code.
2. Enter the size and thickness based on the actual cargo, not from memory.
3. Reconfirm the buyer’s economic code, especially for a new customer.
4. Register the invoice in the time period specified by the system, particularly for tonnage-based transactions.

This few minutes of precision prevents costly subsequent tax follow-ups for a transaction that is both tonnage-based and high-value, while its product diversity makes errors more likely.

An additional point

For a mixed rolled and pressed shipment in a single order, physically separating the two types in the warehouse before invoicing reduces the likelihood of selecting the wrong code.