Business · Calculator companion · By K Imports
Cost of goods sold: practical guide
This guide explains how to use the Count.ie cost of goods sold. Calculate COGS from stock, purchases and inward freight. Follow the inputs, method and worked example below, then compare your own scenario.
Guide written .
Open the Cost of goods sold calculatorWhat to prepare
- Gather supplier quotes, invoices, time records and the actual scope of the job or business decision.
- Separate revenue from VAT, direct costs from overheads, and profit from the timing of cash receipts.
- Use the same accounting period and currency for related inputs.
Understand the inputs
The calculation method
COGS = opening inventory + purchases + inward freight − closing inventory.
Worked example
Illustrative inputs and their result.
Example inputs
- Opening inventory (€)
- 10000
- Purchases (€)
- 50000
- Inward freight (€)
- 1000
- Closing inventory (€)
- 12000
Calculated example result
- COGS
- €49,000.00
How to interpret the result
A profitable estimate can still create a cash shortfall. Read the cost and timing assumptions as well as the headline profit, price or return; the result is a scenario, not a sales forecast.
Keep the scope constant while changing price, volume, supplier cost or time. A lower-sales or higher-cost case helps show whether the decision depends on an optimistic assumption.
Common mistakes to avoid
- Do not confuse markup on cost with margin on selling price.
- Include work that is easy to miss, such as travel, setup, rework and administration, where the model supports it.
- Do not treat tax collected or an unpaid invoice as freely available cash.
Assumptions and sources
Use consistent accounting periods and valuation policies. Outward delivery and operating overheads are not COGS in this simple model.
If your case falls outside this scope, use a more suitable calculator or contact us about an unclear method.