What is Inventory reserve?

For a small Shopify store, an inventory reserve keeps your financial statements honest. If you have candles with faded labels or apparel from two seasons ago sitting in the back room, that stock is still counted as an asset at full cost until you write it down. A reserve accounts for the fact that some of it will sell at a discount or not at all.

You use it by reviewing your stock periodically, flagging items that are aging or damaged, and setting aside an estimated loss amount in your accounting rather than waiting until you actually mark it down or toss it. This gives a more accurate picture of what your inventory is really worth right now, not what you paid for it.

Formula

Example

A candle store has 200 units of a discontinued scent that cost $6 each, for $1,200 total book value. The owner expects to sell them off at half price during a clearance sale, recovering only $3 per unit. They set an inventory reserve of $600 ($3 loss x 200 units) so the books reflect the expected loss before the sale happens.

Common mistakes

• Only adjusting the books after stock is actually sold off cheap or thrown away, instead of estimating ahead of time.
• Ignoring slow-moving stock until it becomes a bigger write-off problem later.
• Mixing up inventory reserve with physical safety stock, they are unrelated concepts despite the similar name.

Inventory reserve and SteadyShelf

SteadyShelf does not handle accounting or inventory valuation, but its forecasting can help you spot slow-moving SKUs early, before they need a reserve or markdown.

SteadyShelf is launching on the Shopify App Store. Join early access to get the install link first.

Related terms

Dead stock · Obsolete inventory · Inventory write-down · Inventory valuation · Slow-moving inventory

Full inventory glossary

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