Assign FIFO costs
See this course’s project requirements
A fictional inventory-cost ledger with FIFO and weighted-average comparison, returns, write-down case and reconciled gross profit.
Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.
What to include
- A unit roll-forward and available-cost identity.
- A FIFO layer worksheet and gross-profit bridge.
- A periodic weighted-average comparison with FIFO and rounding notes.
- A returned-purchase and landed-cost valuation ledger.
- A supported damaged-inventory value adjustment and quantity/value bridge.
- A final inventory-cost and gross-profit reconciliation packet.
Review and revise
Use these criteria to check your work and choose what to improve.
- Units: acquisitions, returns, sales and count reconcile.
- Valuation: FIFO and average use correct layers/pool.
- Loss: supported affected-unit adjustment is explicit.
- Profit: cost destinations and classification reconcile.
Want more background?
The idea in everyday life
Original fictional practice. All money is USD. No account, payment, personal record or outside participation is required. Fictional periodic inventory of identical notebooks: beginning 10 units at 4=40; buy 20 at 5=100; sell 18 at 10=180 revenue. Initial count 12 remain. Later variation: return 4 purchase units before any sales and pay 16 inbound freight allocated only to the 16 retained purchased units. Adjusted goods available 26 units/cost 136; sell 18, ending count 8. For the loss case use FIFO, of the eight unsold units two are damaged, cost 6 each and supported net realizable value 1 each. Exercise policy records the 10 loss within COGS; no tax policy or real standard election is implied. Original changed-case support labels: RET-04 documents the four-unit supplier return before sales; FRT-16 allocates freight 16 to the retained purchase lot; LOSS-02 documents two ending units at cost 6 each and recoverable value 1 each. These are supplied fictional source labels for your audit index.
FIFO is a cost-flow assumption, not proof of which physical notebook left.
Assign FIFO costs — complete worked case
FIFO is a cost-flow assumption, not proof of which physical notebook left.
Fictional periodic inventory of identical notebooks: beginning 10 units at 4=40; buy 20 at 5=100; sell 18 at 10=180 revenue. Initial count 12 remain. Later variation: return 4 purchase units before any sales and pay 16 inbound freight allocated only to the 16 retained purchased units. Adjusted goods available 26 units/cost 136; sell 18, ending count 8. For the loss case use FIFO, of the eight unsold units two are damaged, cost 6 each and supported net realizable value 1 each. Exercise policy records the 10 loss within COGS; no tax policy or real standard election is implied. Original changed-case support labels: RET-04 documents the four-unit supplier return before sales; FRT-16 allocates freight 16 to the retained purchase lot; LOSS-02 documents two ending units at cost 6 each and recoverable value 1 each. These are supplied fictional source labels for your audit index.
Initial original ledger
Paste at A1.
| ARecord | BUnits | CUnit cost | DCost or revenue |
|---|---|---|---|
| Beginning | 10 | 4 | 40 |
| Purchase | 20 | 5 | 100 |
| Sale | 18 | Selling 10 | 180 |
| Initial closing count | 12 | Unassigned | To calculate |
Copy as plain text
1. 2.1 Assign
Order cost layers by acquisition and show available quantities.
You should see: 10 at 4, then 20 at 5.
2. 2.2 Assign
Assign sold 18 from earliest layer, then remaining 8 from the next.
You should see: COGS 80.
3. 2.3 Assign
Value unsold 12 at 5 and check cost identity.
You should see: Ending 60;80+60=140.
4. 2.4 Assign
Change sold quantity to 22 and recompute layers and ending.
You should see: COGS 40+12×5=100; ending 8×5=40.
What to finish
A FIFO layer worksheet and gross-profit bridge.
Watch for this
Selecting layers by selling price or claiming FIFO identifies the actual physical unit.
How can I tell I understand it?
Verify that your completed FIFO layer worksheet and gross-profit bridge meets the three lesson-specific checks and retains the supporting original records.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Pass the check. We’ll save the progress.
Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
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Sources and further reading
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Source & access notes · checked 2026-10-01
Read FIFO, weighted average, historical cost and lower-of-cost discussion; original quantities/costs/NRV policy supplied here.
Access: Public primary page body opened and relevant sections read through the web reader on 2026-10-01; no account required for reading.
Reuse: Original Life Starter cases, datasets and questions; no source exercise or worked dataset reproduced. Links support further reading.
Source & access notes · checked 2026-10-01
Read periodic whole-period average and cost allocation mechanics; all original practice uses this explicitly named periodic method.
Access: Public primary page body opened and relevant sections read through the web reader on 2026-10-01; no account required for reading.
Reuse: Original Life Starter cases, datasets and questions; no source exercise or worked dataset reproduced. Links support further reading.
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