COGS CALCULATOR

COGS UK Seller Fee Calculator

Work out exactly what the goods you sold cost you, and what that leaves you as gross profit, with a free calculator and a downloadable Excel workbook.

Free tool

Cost of Goods Sold (COGS) Calculator

COGS is what it cost you to buy or make the goods you actually sold in a period. The formula: opening inventory plus purchases and direct costs, minus closing inventory. Type your figures and the result updates as you go.

£
Stock on hand at the start of the period, at cost. Also called beginning inventory.
£
Stock and materials bought in the period, plus carriage inwards and direct labour. Not rent, marketing or other overheads.
£
Stock still on hand at the end of the period, at cost. Also called ending inventory.
£
Sales for the same period, excluding VAT if you are VAT registered. Adds gross profit and margin to the result.
Cost of goods sold

Fill in the three inventory figures to see your COGS.

Gross profit Gross margin

Closing inventory is larger than opening inventory plus purchases, which makes COGS negative. Worth checking the figures: the commonest causes are a stock count valued at selling price instead of cost, or purchases missing from the period.

Free download

Take this calculator into Excel

The workbook version goes further than the widget: it splits purchases into stock, carriage inwards and direct labour, and adds a 12-month tracker that carries each month's closing inventory forward and watches your gross margin across the year.

Download the Excel workbook XLSX · free · no signup required Not sure what belongs in your COGS? Get in touch

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