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COGS calculator formula
Add beginning inventory, net purchases, direct labor, materials and supplies, and other included production costs to find goods available for sale. Subtract ending inventory to calculate cost of goods sold.
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COGS Calculator
Calculate cost of goods sold from a transparent period inventory schedule without confusing inventory cost with order-level profit.
FREE TO USEA LOOK ATLAS TOOL
01 USE IT NOW02 NO ACCOUNT03 FIELD NOTES BELOW
WORKING INPUTS
Build the period cost schedule.
LIVE RESULT
Cost of goods sold
$85,000.00$15,000.00 remains in ending inventory from $100,000.00 available for sale.BEGINNING INVENTORY$20,000.00
PERIOD COSTS ADDED$80,000.00
GOODS AVAILABLE FOR SALE$100,000.00
ENDING INVENTORY$15,000.00
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THE COST THAT LEFT THE SHELF
Separate what sold from what remains.
Beginning inventory and period production costs create the goods available for sale. Subtracting ending inventory isolates the cost assigned to goods sold in the period.
WORKING VIEW
$85,000 COGSPERIOD INVENTORY SCHEDULE
METHODbeginning inventory + period costs − ending inventory
WORKING NOTE$20,000 beginning + $80,000 purchases − $15,000 ending
INPUTS → CLEAR OUTPUT
THE FIELD NOTES
Quick answer above. Better decisions below.
Use the result now, then read the practical notes for assumptions, examples, limitations, and the choices behind it.
PERIOD INVENTORY SCHEDULE$85,000 COGS
$20,000 beginning + $80,000 purchases − $15,000 ending
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Build the goods available for sale schedule
Merchants commonly begin with opening inventory and net merchandise purchases. Manufacturers may also include direct labor, materials, and properly allocated production overhead.
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Check ending inventory before reading COGS
Ending inventory cannot exceed goods available for sale within this simplified schedule. If it does, recheck the period, valuation basis, purchases, transfers, returns, and physical count.
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What this planning calculator does not decide
Inventory valuation methods, capitalization rules, tax elections, write-downs, returns, freight treatment, and manufacturing overhead can change the accounting result.
THE INVENTORY COST IS SET
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COGS calculator formula
Add beginning inventory, net purchases, direct labor, materials and supplies, and other included production costs to find goods available for sale. Subtract ending inventory to calculate cost of goods sold.
Keep the beginning and ending inventory values on the same cost basis. Currency is rounded only for display after the full-precision schedule is calculated.
Build the goods available for sale schedule
Merchants commonly begin with opening inventory and net merchandise purchases. Manufacturers may also include direct labor, materials, and properly allocated production overhead.
Freight-in and purchase discounts may affect net purchases. Selling, advertising, and general administrative costs usually belong outside this inventory schedule.
Check ending inventory before reading COGS
Ending inventory cannot exceed goods available for sale within this simplified schedule. If it does, recheck the period, valuation basis, purchases, transfers, returns, and physical count.
The tool blocks a negative result instead of presenting it as a valid cost of goods sold.
What this planning calculator does not decide
Inventory valuation methods, capitalization rules, tax elections, write-downs, returns, freight treatment, and manufacturing overhead can change the accounting result.
Use the output to check a period schedule. Confirm the final classification and tax treatment with current records and a qualified accountant.
Questions, answered.
How do I calculate COGS?
Add beginning inventory and the costs included in goods available for sale, then subtract ending inventory from that total for the same reporting period.
What belongs in net purchases for COGS?
Use merchandise purchases adjusted for relevant returns, allowances, discounts, and freight-in according to the accounting method used for the period.
Why can ending inventory not exceed goods available for sale?
In this simplified schedule, ending inventory is part of the goods available total. A larger ending balance would produce negative COGS and signals mismatched periods, values, or missing costs.
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