Calculating your shrinkage rate is straightforward once you know the Inventory Shrinkage formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Inventory Shrinkage Calculator.
What is Inventory Shrinkage?
The Inventory Shrinkage calculation tells you your shrinkage rate from a few simple inputs. The figure you are solving for here is the shrinkage rate, expressed in percent.
The Inventory Shrinkage formula
The core formula is:
Shrinkage rate = (Recorded inventory value - Actual inventory value) ÷ Recorded inventory value × 100Here is what each input means:
- Recorded inventory value — a money amount. Example: ₹10,000.
- Actual inventory value — a money amount. Example: ₹9,500.
How to calculate it step by step
- Write down the recorded inventory value (for example, ₹10,000).
- Write down the actual inventory value (for example, ₹9,500).
- Apply the formula above to get your shrinkage rate.
- Double-check the result with the Inventory Shrinkage Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Recorded inventory value | ₹10,000 |
| Actual inventory value | ₹9,500 |
| Shrinkage rate | 5.00% |
| Shrinkage loss | ₹500.00 |
With recorded inventory value of ₹10,000 and actual inventory value of ₹9,500, the shrinkage rate works out to 5.00%.
Example 2
With recorded inventory value of ₹20,000 and actual inventory value of ₹9,500, the shrinkage rate works out to 52.50%.
| Result | Value |
|---|---|
| Shrinkage rate | 52.50% |
| Shrinkage loss | ₹10,500.00 |
Example 3
With recorded inventory value of ₹5,000 and actual inventory value of ₹9,500, the shrinkage rate works out to -90.00%.
| Result | Value |
|---|---|
| Shrinkage rate | -90.00% |
| Shrinkage loss | -₹4,500.00 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the Inventory Shrinkage Calculator does it instantly, for free, with the formula and a worked example built in.
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