Tariff Accounting: How Manufacturers Track and Recover Duty

A Utah aerospace parts manufacturer imports specialty metals from three countries. Between Section 232 tariffs on steel and aluminum, Section 301 tariffs on Chinese-origin goods, and the shifting Most Favored Nation duty rates, the effective landed cost of raw materials has climbed 15 to 30 percent over the last few years, depending on the specific inputs.

Most manufacturers absorb this into cost of goods sold and move on. That is a mistake for two reasons. First, incorrect classification of tariff costs on the books can distort inventory valuation and product profitability. Second, meaningful duty recovery is available through duty drawback, reclassification, and country-of-origin planning, but only for manufacturers who have documentation ready before the recovery opportunity arises.

How Tariffs Land on Your P&L

Tariffs paid to Customs and Border Protection at the port of entry are a direct cost of the imported goods. Under GAAP, they are added to inventory value at receipt and flow through cost of goods sold as the underlying inventory is used or sold.

Booking tariffs directly to a period expense (or to a “duties and taxes” expense line separate from inventory) is a common error. That practice understates inventory value, overstates period expense, and can lead to timing distortions on the P&L, especially when tariff rates change mid-year or new tariffs are imposed retroactively.

Section 301 vs. Section 232 vs. MFN Duty

Three tariff categories dominate manufacturer duty costs:

• Most Favored Nation (MFN) duty. The baseline tariff rate applied under WTO agreements. Rates vary by HTS code and country and generally run from 0 to 10 percent, though some categories are higher.
• Section 232. Tariffs imposed on national security grounds, currently applied to steel, aluminum, and certain derivative products. Rates have moved between 10 and 25 percent depending on origin and product.
• Section 301. Tariffs imposed on trade practice grounds, applied to a large list of Chinese-origin goods. Rates have moved between 7.5 and 100 percent depending on the specific list and product category.

Tariffs stack. A Chinese-origin steel product can face MFN duty plus Section 232 plus Section 301, producing a total effective rate that changes the economics of sourcing entirely.

Duty Drawback: When You Can Recover Tariffs

Duty drawback is a Customs program that lets importers recover up to 99 percent of duties paid on imported goods that are subsequently exported or destroyed. Three drawback categories cover most manufacturer situations:

• Unused merchandise drawback. Imported goods exported without meaningful use.
• Manufacturing drawback. Imported goods used in the production of exported finished products.
• Rejected merchandise drawback. Imported goods that were defective or nonconforming and are exported or destroyed.

For an Idaho or Utah manufacturer that exports even a modest fraction of production, manufacturing drawback can recover meaningful cash. Recoveries can go back up to five years from the date of import, which means a first-time drawback filer can pull cash from historical periods.

Reclassification and Country-of-Origin Planning

HTS (Harmonized Tariff Schedule) classification determines the duty rate. Small differences in how a product is described can shift it into a lower-duty category. A CBP binding ruling request formalizes the classification and locks in the rate; the ruling is public and precedent-setting for that specific product.

Country of origin is determined by substantial transformation rules, not just by where the product was shipped from. Assembly, machining, or further manufacturing in a lower-tariff country can shift the country of origin for tariff purposes. This is a real planning lever, but the rules are strict and the documentation is heavy. First Sale valuation is another lever, allowing duty to be paid on the manufacturer’s price to a trading company rather than the price the U.S. importer pays.

Booking Tariffs to Inventory vs. Period Cost

The default GAAP treatment (loading tariffs into inventory) is generally correct. But two situations argue for a period-cost treatment or a separate inventory sub-account:

• Retroactive tariff impositions. When a tariff is imposed on goods already in inventory, some manufacturers charge the incremental cost to period expense rather than restating prior inventory value.
• Recovery-track tariffs. When tariffs are being recovered through drawback, some manufacturers hold the duty in a separate current asset account (drawback receivable) rather than loading it into inventory, especially if the recovery timeline is short.

Both practices require careful documentation and consistent application.

The Documentation Trail That Enables a Refund

Every duty recovery mechanism (drawback, reclassification, First Sale, protest) requires supporting documentation. Manufacturers who plan for recovery keep:

• Import entry documents (7501s, commercial invoices, packing lists)
• Production records tying imported inputs to specific finished goods
• Export documents (bills of lading, commercial invoices) proving the export event
• Waste and yield records for manufacturing drawback
• HTS classification analyses and binding ruling requests

The documentation cannot be reconstructed after the fact. Manufacturers who set up the recovery infrastructure ahead of time capture the cash; those who do not typically leave it on the table.

Tariff mechanics have become a significant piece of manufacturer cost structure, and the accounting treatment is only half the story. The manufacturing team at Cooper Norman helps Idaho and Utah manufacturers work with licensed customs brokers and drawback specialists to identify recovery opportunities and build the documentation trail. Our tax planning group can help you evaluate whether the effort is worth it for your specific import profile.

This overview is general information, not legal or customs advice for your specific business. Talk with a Cooper Norman advisor and a licensed customs professional about how these rules apply to your operation.