Ending Inventory Calculator
Reconcile ending inventory from a beginning balance, inventory additions, and cost of goods sold. Every amount is entered for one accounting period and the calculator solves only ending inventory.
How to use the Ending Inventory Calculator
Enter beginning inventory, net purchases, inventory-related labor, materials and supplies, other inventory costs, and cost of goods sold.
Review valuation method, returns, freight-in, purchase discounts, write-downs, shrinkage, consignment, period cutoff, and currency.
Read goods available for sale and ending inventory.
Formula
Goods available = beginning inventory + net purchases + inventory-related labor + materials and supplies + other inventory costs. Ending inventory = goods available − cost of goods sold.
Example
Beginning inventory of $40,000 plus $90,000 purchases minus $100,000 COGS gives $30,000 ending inventory.
Assumptions and limitations
- All amounts use the same valuation basis and reporting period; the calculator does not select FIFO, LIFO, weighted-average, or tax treatment.
- Ending Inventory Calculator treats the entered values as estimates and does not infer missing project, account, or personal details.
- Calculations retain working precision except where the cited method requires an intermediate rounding step; displayed values are then formatted separately. Source rules and dated rates must be rechecked when they change.
Sources
- U.S. Securities and Exchange Commission: Beginners’ Guide to Financial StatementsFinancial-statement, inventory, and cost-of-sales context. Reviewed 2026-08-14.
- Internal Revenue Service: Publication 334 (2025), Tax Guide for Small Business — Cost of Goods SoldOfficial formula, rate, or program guidance used by this calculator. Reviewed 2026-08-14.
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Frequently asked questions
How does the Ending Inventory Calculator work?
Goods available = beginning inventory + net purchases + inventory-related labor + materials and supplies + other inventory costs. Ending inventory = goods available − cost of goods sold.
What information should I enter in the Ending Inventory Calculator?
Enter beginning inventory, net purchases, inventory-related labor, materials and supplies, other inventory costs, and cost of goods sold, then verify valuation method, returns, freight-in, purchase discounts, write-downs, shrinkage, consignment, period cutoff, and currency.
What should I verify before using this Ending Inventory Calculator result?
All amounts use the same valuation basis and reporting period; the calculator does not select FIFO, LIFO, weighted-average, or tax treatment.
Reviewed 2026-08-14 · 1.0.0 · content-2026-08-14 · Trusty Calculator Editorial Team