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LIFO Inventory Costing Calculator — result sheet
Use a periodic last-in, first-out layer worksheet to estimate ending inventory cost and cost of goods sold from beginning stock and two purchase layers.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Goods available cost = sum of each layer’s units×unit cost; periodic LIFO ending inventory consumes the newest layers first; LIFO cost of goods sold = goods available cost − LIFO ending inventory cost.
This layer worksheet makes the periodic LIFO assumption visible. It starts with beginning stock, adds two chronological purchases, then values the entered ending units from the newest layer backward. The remainder is the mechanical cost of goods sold for the selected layers, which helps learners and analysts see why inventory method choice changes reported cost allocation without pretending to prepare a financial statement.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Beginning inventory units — units; minimum 0; maximum 1000000000000
- Beginning unit cost — currency units/unit; minimum 0; maximum 1000000000000
- First purchase units — units; minimum 0; maximum 1000000000000
- First purchase unit cost — currency units/unit; minimum 0; maximum 1000000000000
- Second purchase units — units; minimum 0; maximum 1000000000000
- Second purchase unit cost — currency units/unit; minimum 0; maximum 1000000000000
- Ending inventory units — units; minimum 0; maximum 3000000000000
Worked example
| Input | Value |
|---|---|
| Beginning inventory units | 100 |
| Beginning unit cost | 10 |
| First purchase units | 50 |
| First purchase unit cost | 12 |
| Second purchase units | 75 |
| Second purchase unit cost | 14 |
| Ending inventory units | 90 |
The worksheet has 225 units available at a total cost of 2,650. Periodic LIFO values 90 ending units at 1,230, leaving estimated cost of goods sold of 1,420.
Assumptions and limits
- The three layers are entered in chronological order and all units are interchangeable for quantity tracking.
- Ending inventory is valued under periodic LIFO by taking the newest available units first.
- All unit costs use the same currency and include whatever direct cost convention the user intends to study.
- Ending units cannot exceed total units available from beginning stock and the two purchases.
- The worksheet does not model purchase returns, discounts, freight, shrinkage, taxes, or perpetual transaction timing.
- Financial-reporting and tax treatment can differ by jurisdiction and should be checked against the applicable rules.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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