Managing inventory write-offs is like keeping track of water flowing through a leaky bucket – you need to know exactly how much you're losing and why. Restaurant owners often toss spoiled ingredients without documenting the loss, creating gaps in their financial records. Accurate write-off documentation protects you from tax complications and keeps your books clean.
What is written-off inventory?
Written-off inventory includes products you've purchased but can't sell anymore. Spoiled vegetables, expired meat, or accidentally discarded ingredients all fall into this category.
Your books show the purchase expense, but there's no corresponding revenue. You must register these losses properly to maintain accurate records.
💡 Example:
You buy €50 worth of fish. Due to a broken cooler, €15 worth of fish spoils.
- Fish purchase: €50
- Sold: €35
- Written off: €15
You need to book this €15 as a loss.
Why correct documentation matters
Your accountant requires this data for several critical calculations:
- Inventory valuation: Determining your actual inventory worth
- Cost price calculation: Understanding true dish costs
- VAT return: You don't owe sales tax on discarded inventory
- Profit calculation: Losses reduce your taxable profit
⚠️ Warning:
Tax authorities can reject undocumented write-offs, resulting in overpaid taxes.
What must you record per write-off?
Document these details for every write-off:
- Date: Discovery or disposal date
- Product: Specific description ("2 kg salmon fillet")
- Purchase value: Original cost
- Reason: Cause of write-off (spoilage, expiration, accident)
- Who: Staff member who discovered it
💡 Example entry:
March 15, 2024 - Salmon fillet 1.2 kg - €28.80 - Spoilage due to cooler malfunction - Discovered by head chef
Digital vs. paper registration
Many kitchens rely on notebooks beside trash bins. But this approach has drawbacks:
- Staff forget to record items
- Illegible handwriting creates confusion
- Lists get lost or damaged
- No automatic loss calculations
Digital systems offer clear advantages:
- Instant photo documentation
- Automatic total calculations
- Period-based reporting
- Direct data export to accountants
This is the kind of thing you only learn after closing your first month at a loss – proper tracking systems prevent those painful surprises that show up in your P&L statement.
💡 Monthly summary example:
- March 2024 total write-offs: €284
- Highest loss category: fish (€95)
- Primary cause: cooler malfunction (€150)
These patterns help you identify problems and reduce future waste.
Documentation timing
Record write-offs immediately upon disposal. Don't rely on end-of-day memory – you'll miss items and lose accuracy.
Compile weekly summaries for your accountant containing:
- Total write-off value
- Breakdown by product type
- Primary loss causes
Digital tracking tools
Modern inventory systems allow photo documentation and automatic calculations for food waste. These platforms identify your most frequently discarded items, revealing waste patterns you might otherwise miss.
Export features send detailed reports directly to your accountant, including all required documentation for each write-off.
How do you document written-off inventory? (step by step)
Create a write-off form
Set up a fixed format with fields for date, product, quantity, purchase price, reason, and who discovered it. This can be digital or on paper.
Register immediately when throwing away
Fill in the form as soon as you throw something away. Take a photo if needed as proof. Don't wait until the end of the day.
Calculate the purchase value correctly
Use the actual purchase price of the product. For products with cutting waste, calculate using the price of the usable part.
Create a weekly overview
Add up all write-offs from the week and create an overview per product category. Send this to your accountant.
Analyze patterns
Look at which products you write off most often and what the main causes are. This helps prevent losses in the future.
✨ Pro tip
Install a tablet or smartphone mount next to your disposal area and require staff to photograph and log every write-off within 2 minutes of discovery. This simple 30-second process prevents thousands in untracked losses annually.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Can I estimate write-offs instead of tracking them exactly?
That's not advisable. Tax authorities require concrete documentation with specific details. Estimates often get rejected during audits, leaving you liable for additional taxes.
What if I forgot to document write-offs?
Try reconstructing the information using purchase receipts, photos, or staff witness statements. For future prevention, establish a mandatory recording routine that staff follow immediately upon disposal.
Do I have to take photos of thrown-away food?
Photos aren't legally required, but they provide strong audit evidence. For write-offs over €25, visual documentation significantly strengthens your case with tax authorities.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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