Tax season can expose how much cash is tied up in inventory that may never be used. If your manufacturing business has slow-moving or one-off components sitting on the shelf, you may be paying inventory tax on items that will not generate future revenue.

This is especially common in custom and project-based manufacturing, where you purchase material for a specific complex assembly and later see that projected demand will not consume that stock. In those cases, it may be more practical to write the inventory off and relieve the tax burden instead of carrying it indefinitely.

Why Unused Inventory Matters at Tax Time

Unused or unlikely-to-be-used inventory affects more than physical space in your warehouse. It affects your balance sheet, your tax liability, and your ability to invest in material that supports active demand. If you do not identify these items in a structured way, they can quietly increase annual inventory tax and obscure the true health of your inventory position.

A disciplined approach to write offs requires good data. You need a way to see which components are only used on a handful of bills of material (BOMs), how often they are consumed, and what the extended inventory value is for those parts. Cetec ERP provides this visibility through the BOM Inventory Usage report.

Using the BOM Inventory Usage Report in Cetec ERP

The BOM Inventory Usage report in Cetec ERP groups related assembly BOMs and shows which components are shared across them. Using the Specific Parts field, you can type in a BOM assembly you want to analyze, select it from the dropdown, and save one or more BOMs into the search criteria. Cetec ERP then evaluates component usage across those assemblies so you can focus on potential write off candidates.

• Group together BOMs that share common components or subassemblies.
• View a BOM Use metric and sort in descending order to see parts that appear on very few BOMs.
• See the Ext Inventory Value for each component to highlight high value items with limited usage.

The result is a focused list of parts that are rarely used, along with the dollar value attached to what you currently hold in stock. This gives your team a concrete starting point for write off discussions.

The screenshot below shows an example of a BOM Inventory Usage report in Cetec ERP that highlights low-usage, high-value components.

Evaluating Parts for Potential Write Off

Once you have a list of components with low BOM usage and high extended value, the next step is to review them with sales, engineering, and operations. Confirm whether there are real future orders or projects that require those parts, or whether demand has shifted and left this material stranded.

For parts that are unlikely to be consumed, you can flag them as candidates for write off or obsolescence. The BOM Inventory Usage report provides the supporting detail that accounting teams need to understand why specific items are being proposed for write off and what the financial impact will be.

Coordinating Inventory Write Offs with Accounting and Tax Planning

Inventory write offs affect both your financial statements and your tax position, so they should be handled in a controlled way. With a clear BOM Inventory Usage report, your accounting team can review proposed items, decide how to record the write off in your general ledger, and document the business justification for your tax records.

The goal is to remove clearly obsolete or unlikely-to-be-used inventory from your taxable base while maintaining traceability back to the data that supported the decision. Cetec ERP provides the usage and value insight, and your accounting and tax advisors can guide the specific treatment based on your jurisdiction and policies.

Key Takeaways

• Unused or unlikely-to-be-used inventory increases both carrying costs and inventory-related tax liability.
• The BOM Inventory Usage report in Cetec ERP groups related assemblies and highlights low-usage components.
• Sorting by BOM use and extended inventory value makes it easier to spot high value parts that are good write off candidates.
• Sharing this report with accounting and tax advisors supports controlled, well-documented inventory write off decisions.

Conclusion

Write offs can be a practical way to relieve tax pressure from obsolete inventory, but only if you can clearly see which parts are truly stranded. By using the BOM Inventory Usage report in Cetec ERP, your team can identify those items with confidence, back up decisions with data, and keep both your warehouse and your tax exposure aligned with current demand.