Accounting Inventory Turnover (Monthly) Calculator Examples
Worked monthly inventory turnover examples showing average inventory, turnover rate, and estimated days inventory on hand.
These examples show how different inventory balances, cost of goods sold amounts, and month lengths affect monthly inventory turnover. They use cost values consistently and are illustrative estimates rather than performance benchmarks.
Fast-moving retail inventory example
Beginning inventory is $20,000, ending inventory is $16,000, and monthly cost of goods sold is $108,000.
Input Summary
Beginning inventory
$20,000
Ending inventory
$16,000
Monthly cost of goods sold
$108,000
Days in month
31 days
Calculation Breakdown
- 1Average inventory($20,000 + $16,000) / 2$18,000
- 2Monthly turnover$108,000 / $18,0006.00 times
- 3Days inventory on hand31 / 6.005.2 days
Result Summary
Days inventory on hand
5.2 days
Accounting Inventory Turnover (Monthly) Calculator
Average inventory is $18,000, turnover is 6.00 times, and days inventory on hand is about 5.2 days.
Steady wholesale inventory example
Beginning inventory is $120,000, ending inventory is $100,000, and monthly cost of goods sold is $220,000.
Input Summary
Beginning inventory
$120,000
Ending inventory
$100,000
Monthly cost of goods sold
$220,000
Days in month
30 days
Calculation Breakdown
- 1Average inventory($120,000 + $100,000) / 2$110,000
- 2Monthly turnover$220,000 / $110,0002.00 times
- 3Days inventory on hand30 / 2.0015.0 days
Result Summary
Days inventory on hand
15.0 days
Accounting Inventory Turnover (Monthly) Calculator
Average inventory is $110,000, turnover is 2.00 times, and estimated inventory on hand is 15.0 days.
Seasonal stock build example
Beginning inventory is $30,000, ending inventory is $70,000, and monthly cost of goods sold is $56,000.
Input Summary
Beginning inventory
$30,000
Ending inventory
$70,000
Monthly cost of goods sold
$56,000
Days in month
28 days
Calculation Breakdown
- 1Average inventory($30,000 + $70,000) / 2$50,000
- 2Monthly turnover$56,000 / $50,0001.12 times
- 3Days inventory on hand28 / 1.1225.0 days
Result Summary
Days inventory on hand
25.0 days
Accounting Inventory Turnover (Monthly) Calculator
Average inventory is $50,000, turnover is 1.12 times, and estimated inventory on hand is 25.0 days.
Inventory reduction example
Beginning inventory is $90,000, ending inventory is $50,000, and monthly cost of goods sold is $210,000.
Input Summary
Beginning inventory
$90,000
Ending inventory
$50,000
Monthly cost of goods sold
$210,000
Days in month
30 days
Calculation Breakdown
- 1Average inventory($90,000 + $50,000) / 2$70,000
- 2Monthly turnover$210,000 / $70,0003.00 times
- 3Days inventory on hand30 / 3.0010.0 days
Result Summary
Days inventory on hand
10.0 days
Accounting Inventory Turnover (Monthly) Calculator
Average inventory is $70,000, turnover is 3.00 times, and estimated inventory on hand is 10.0 days.
How to Read Your Results
Monthly inventory turnover is expressed as times: a result of 3.00 means monthly cost of goods sold was three times average inventory.
Average inventory is the simple midpoint between the beginning and ending inventory values entered.
Days inventory on hand converts the turnover result into an estimated average number of days of stock held.
Use a consistent inventory valuation method and cost of goods sold basis when reviewing month-to-month results.
Consider seasonality, stock availability, product mix, and unusual purchases alongside the calculated figures.
Assumptions & Important Notes
- Each example uses inventory and cost of goods sold values on the same cost basis.
- Average inventory is calculated from only the opening and closing month-end balances.
- Days inventory on hand uses calendar days in the selected month.
- The examples exclude the effects of intra-month stock movements, returns, and inventory adjustments.
Related Examples
Frequently Asked Questions
What is a good monthly inventory turnover rate?
There is no single good rate for every business. Suitable turnover varies with product type, shelf life, lead times, demand patterns, and service-level goals.
Why can turnover fall when inventory increases?
If inventory increases faster than cost of goods sold, average inventory rises relative to sales at cost, which lowers the turnover calculation.
Does a 28-day month change days inventory on hand?
Yes. The calculator divides the selected number of days by turnover, so a 28-day month produces fewer stock days than a 30-day month at the same turnover rate.
Can a business have turnover above 1 in a month?
Yes. A result above 1 means monthly cost of goods sold exceeded average inventory. This can occur when stock sells and is replenished multiple times during the month.
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