Quick Answer: A year-end inventory count protects your business’s cash flow by uncovering unrecorded damage and obsolete stock that artificially inflate your balance sheet. Correcting that ending inventory balance shifts those losses into Cost of Goods Sold (COGS) on your P&L, eliminating taxes on phantom profits and giving your CPA the documentation needed to reduce your taxable income before year-end.
Key Takeaways:
- Counting damaged or missing stock lowers your ending inventory asset, shifting those losses into Cost of Goods Sold (COGS) so you avoid paying taxes on money you never actually pocketed.
- Writing down slow-moving stock or scrapping obsolete inventory before December 31 clears dead weight off your balance sheet and gives your CPA the documentation needed to claim the expense.
- Truing up your inventory balances before the books close locks in your write-offs for the current year, preserving working capital that’s lost if you carry inflated asset values into the new year.
“I really look forward to counting inventory.”
Said no business owner ever.
And when it’s late December, it’s hard not to just open Shopify or Square, shrug, and decide the dashboard numbers are close enough.
Don’t make that mistake.
Every broken item dropped behind a shelf and every piece of dead stock gathering dust on your warehouse floor is an unrecorded loss that distorts your balance sheet.
Left uncounted, your books show phantom profits, and you risk paying taxes on cash you never actually pocketed.
Here’s how an accurate year-end inventory count protects your working capital, and how it hands your CPA the numbers they need to cut your tax bill.
How does a year-end inventory count lower my business’s tax bill?
A year-end inventory count lowers your tax bill by shifting unrecorded losses, such as shrinkage or damage, off your balance sheet and onto your P&L. In accounting, your ending inventory is subtracted when calculating Cost of Goods Sold (COGS). Reducing that asset balance increases your COGS deduction dollar-for-dollar, eliminating taxes on phantom profits and reducing your taxable net income.
Until you do a physical audit, your software assumes every item ever purchased is still in your warehouse at full value. Completing the count before December 31 trues up your gross margins to reflect actual performance and arms your CPA with the verified documentation needed to claim the write-offs for the current tax year.
Can small businesses expense inventory the year they buy it?
Even if you run your Memphis small business on a cash basis, standard accounting (and tax law) doesn’t allow you to deduct the cost of inventory until you actually sell it to a customer or write it off. Unsold stock sitting in your warehouse at year-end can’t wipe out this year’s taxable income.
Say an e-commerce owner checks their bank account in mid-December and sees $60,000 sitting there. Afraid of a painful tax bill in the spring, they decide to spend down their profit. On December 28, they place a bulk order for $50,000 in new inventory, assuming they just bought themselves a $50,000 tax deduction for the current year.
Then they hand their books over to their CPA in the spring, and that $50,000 purchase didn’t trim their taxable income at all.
Because those goods were sitting on warehouse shelves at midnight on December 31, that money is classified as an asset on the balance sheet. Not an expense. They merely moved $50,000 from their bank account into a pile of boxes on the floor, and their operating cash is gone.
The lesson here is, if you want to trim your taxable income before December 31, don’t buy new inventory. Look at what’s already sitting in your warehouse.
Writing down or discarding dead stock removes it from your ending inventory balance. That pushes the cost straight into Cost of Goods Sold, handing your CPA the expense they need to lower your tax bill while keeping your cash safely in the bank.
How do you write off obsolete or damaged inventory before year-end?
You have three primary ways to clear dead inventory off your balance sheet: write it down, scrap it, or donate it.
The main thing is, you can’t just reduce inventory values on a spreadsheet as you feel like it. Your books have to reflect commercial reality, and you need to give your CPA the documentation to back it up.
Here’s how we categorize and handle that inventory before December 31:
| Inventory Condition | Operational Action | Balance Sheet & P&L Impact | Paper Trail Your CPA Will Need |
| Normal Unsold Stock | Leave on shelves | Remains an asset; no P&L impact | Standard inventory ledger |
| Slow-Moving / Damaged | Discount to fair market value | Write down to Net Realizable Value; difference moves to COGS | Proof of public price markdowns within 30 days |
| Worthless / Broken | Physically destroy and discard | 100% written off into COGS | Hauler invoices, dumpster receipts, or destruction logs |
| Excess Good Stock | Donate to a qualified charity | Removes asset; creates potential charitable deduction | Donation receipt & written acknowledgment from the 501(c)(3) |
1. Writing down slow-moving goods
If products are cosmetically flawed or dated, you can write them down to their Net Realizable Value (what they can actually sell for today, minus selling costs).
To give your CPA the required substantiation to claim the loss, you must actively offer the goods at that discounted price within 30 days of your year-end count. If we mark down jackets from $100 to $30 on the books on December 31, your store needs to publicly advertise them at $30 by late January.
2. Scrapping worthless stock
If an item is truly unsellable and taking up valuable warehouse space, physically destroy or discard it before year-end so it can never be sold.
And be sure to take photos of the goods in the dumpster or save invoices from your junk-removal service. When tax time rolls around, your CPA will have the verifiable documentation they need to defend the full write-off.
3. Donating excess inventory
If you have new inventory that you over-ordered, consider donating it to a qualified 501(c)(3) nonprofit before December 31. This frees up working capital for next year’s orders and hands your CPA a clean charitable contribution to apply on your tax return. (Be sure to check with your tax preparer on the exact entity-level deduction limits for donations).
How to do a year-end inventory count
To execute an audit-proof inventory count, freeze operations, quarantine damaged stock, and conduct two-person blind counts without pre-filled software quantities. Reconcile variances and post the adjusting entry to Cost of Goods Sold before December 31. Then, archive signed count sheets and third-party disposal receipts so your Memphis CPA has the documentation they need to finalize your tax return.
1. Freeze operations
Halt all inbound deliveries and order fulfillment while you’re counting. Trying to count moving stock leads to double-counting and phantom discrepancies. Set aside any deliveries that arrive mid-count in a marked staging area and log them after you’re done.
2. Quarantine defective stock
Physically pull expired, broken, or obsolete items off your shelves before the count begins. If they stay in standard bins, counters will record them as full-value assets. Move them to a marked quarantine area to decide whether to scrap them or mark them down.
3. Run two-person blind counts
Provide count sheets listing only the SKU, description, and location, leaving the quantity blank. And pair counters in teams of two (one counts, one records) to help eliminate bias and counting errors.
4. Reconcile and post adjustments before Dec 31
Compare your verified physical counts against your inventory software. Calculate the net variance and post the adjusting journal entry to your books dated on or before December 31 (debiting COGS and crediting your inventory asset account). This clears missing or unsellable inventory off your balance sheet and ensures your CPA has the correct expense figures for the current tax year.
5. Build your audit trail
Save a digital folder with:
- Signed, dated count sheets.
- Software variance reconciliation reports.
- Timestamped photos of scrapped goods and third-party disposal/dumpster receipts.
- Screenshots showing marked-down items actively offered for sale within 30 days.
Final thoughts
Let’s evaluate your inventory data and optimize your Cost of Goods Sold before the holiday and end-of-year rush makes you too crunched for time, so we can protect your working capital before the books close.
Let’s go ahead and get your year-end inventory review on the calendar:
calendly.com/cathy-cpa/website-appt
FAQs
“How do you write down bad inventory?”
To write down inventory, you revalue damaged or slow-moving stock down to its Net Realizable Value (the realistic price you expect to receive minus disposal or selling costs) and record an adjusting journal entry debiting Cost of Goods Sold (COGS) and crediting your inventory asset account. For this balance sheet reduction to be audit-defensible and ready for your CPA to claim at tax time, you have to physically flag the merchandise during your count and publicly offer the discounted items for sale within 30 days of the count date. You should also archive contemporaneous proof of the markdown to substantiate the reduced asset value.
“What are the best practices for identifying obsolete inventory items?”
The best approach pairs an inventory aging analysis with a physical warehouse audit. Start by pulling an aging report from your inventory management software to flag SKUs with no movement or low turnover over the past 6 to 12 months, as this dead stock ties up critical working capital and inflates your holding costs. Next, cross-reference that report with an on-the-ground inspection to identify damaged or expired goods. Physically quarantine these items into a designated holding area so they aren’t mistakenly recorded as performing assets on your year-end balance sheet, allowing you to execute the proper write-downs or scrap entries before the books close.
“What documentation is required for inventory disposal?”
To substantiate an inventory write-off on your books and hand your CPA strong documentation, you need verifiable proof that the items were permanently disposed of before year-end. Start with an internal disposal log detailing the specific SKUs, quantities, and cost basis, signed off by an authorized manager to maintain clean internal controls. Back that log up with independent, third-party verification, such as junk-hauler invoices or timestamped photos of the destroyed goods, and file it into your year-end closing workpapers.
“Can I use cloud-based services to streamline my year-end inventory write-off process?”
Integrating a dedicated cloud inventory management system (IMS) with your core accounting software replaces messy manual spreadsheets and catches discrepancies in real time. Mobile barcode-scanning tools allow your floor team to execute counts rapidly while the system automatically cross-references physical counts against your perpetual inventory records. Once you review and approve the count, the software generates a clean variance report. That lets us true up Cost of Goods Sold on your P&L and remove dead stock from your balance sheet.