Dictionary / Batch Costing
What does Batch Costing mean in accounting?
Quick definition
Inventory & costingA method of cost accounting whereby costs are accumulated by batches or runs, as in the petroleum, chemical, and rubber industries. This term guides how bookkeepers record, classify, and explain related transactions in routine financial reporting.
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Examples
One press run of identical gaskets
You mold rubber gaskets for industrial clients. On September 8 you complete one press run of 400 identical EPDM gaskets. A rubber supplier billed $720 of compound, press wages were $360, and mold setup was $120, so the run costs $1,200. You accumulate those costs on the run, not on each gasket as it comes off the press, then divide by 400 so each unit carries $3.00 into inventory. You ship 250 that week; those $750 move to cost of sales and the other 150 stay in inventory at the same run rate. In QuickBooks Online or Xero, park the compound bill, wages, and setup on a work-in-progress account tagged to that run, then move the finished units to inventory at $3.00 each.
Three tank runs dumped into one month
You blend industrial cleaners. In June you ran three tanks: a cheap floor soap, a solvent degreaser, and a small high-purity rinse. A chemical supplier billed $410, $1,740, and $960 of ingredients across those runs, and kettle labor was $180, $260, and $90. At June 30 you coded every supplier bill and all kettle wages to one Production expense line, then divided by total gallons. That is a monthly process average, not batch costing. The degreaser used far more solvent than the floor soap, so leftover drums sit in inventory at the wrong rate. Split materials and kettle time by tank, then put each run's leftover gallons on the balance sheet at that run's cost.
Why it matters
If you make goods in discrete lots, each run has its own materials, labor, and setup, and batch costing piles those costs onto the run so inventory and later cost of sales carry that lot's cost, not a shop-wide average. You will do this when a production run finishes, a few times a month if you blend chemicals, mold rubber, or pack similar lots; you will not post it on ordinary bill-pay days, and a reseller or a one-off custom job shop almost never needs it. Absorption costing decides which factory costs go in; this term decides the grouping: by run, not by customer invoice and not by the whole month. Dump every mixing cost into one monthly pot and an expensive run hides inside a cheap one; treat each sales invoice as its own job and you split shared setup that belonged to the lot.
Further reading
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What is Batch Costing in bookkeeping?
A method of cost accounting whereby costs are accumulated by batches or runs, as in the petroleum, chemical, and rubber industries.
When should I use Batch Costing?
Use Batch Costing when the transaction facts match its definition and you need the ledger and financial statements to reflect the correct account and period.
What is a common mistake with Batch Costing?
Batch Costing is used for batch costing entries, while Bad Debt covers a related but distinct bookkeeping purpose. Review both terms before posting unusual transactions. A common mistake is applying it by label only instead of checking the underlying transaction details.