What is process costing?
A product costing system used when identical units are mass-produced through continuous processes
What are the five steps in process costing?
1) Summarize units
2) Summarize costs
3) Compute equivalent units
4) Cost per equivalent unit
5) Assign costs
What are equivalent units?
A measure of completed work expressed in fully completed units
Why are equivalent units necessary?
Because some units are partially complete at period-end.
Equivalent unit example for conversion costs
80 units × 60% complete = 48 equivalent units.
What are the two process costing methods?
Weighted-average and FIFO
How does weighted-average treat beginning WIP costs?
Pools beginning WIP costs with current period costs.
How does FIFO treat beginning WIP costs?
Separates beginning WIP costs from current period costs.
Key difference between WA and FIFO
WA blends prior/current costs; FIFO isolates current-period performance.
When is FIFO more useful for managers?
When pricing decisions are frequent—more timely cost information.
Which method smooths cost fluctuations?
Weighted-average method.
Where are direct materials typically added in the chocolate example?
At the beginning of the process
How are conversion costs added in the chocolate example?
Evenly throughout the production process
What costs are included in conversion costs?
Direct labor and manufacturing overhead.
What happens to prior-period costs under FIFO when input prices rise?
Higher-cost prior units are completed and transferred out first.
Under rising input prices, ending WIP is higher under which method?
FIFO.
Under rising input prices, COGS is lower under which method?
FIFO
Under rising input prices, which method reports higher net income?
FIFO (because COGS is lower).
Under decreasing input prices, which method reports higher COGS?
FIFO.
Common mistake in equivalent units calculation
Forgetting to multiply physical units by % completion.
What is beginning work-in-process (BWIP)?
Partially completed units carried over from prior period.
What is ending work-in-process (EWIP)?
Units partially complete at end of current period.
What does “units transferred out” represent?
Completed units moved to the next department or finished goods.
Why does FIFO allow better period comparisons?
It isolates current-period costs from prior-period costs.