Ever walked into a warehouse, saw a box of returns piled up, and wondered how the books even keep track?
In a periodic inventory system, that mystery gets a little clearer—especially when you start dealing with purchase returns.
Plus, it’s one of those “aha! ” moments that makes the whole accounting maze feel a bit more like a puzzle you can actually solve.
What Is a Purchase Return in a Periodic Inventory System
When you buy inventory, you record the cost in a Purchases account.
If some of that inventory never makes it to the shelf—maybe it’s damaged, wrong size, or the supplier just messed up—you send it back. That outbound shipment is a purchase return Less friction, more output..
In a periodic system you’re not updating inventory balances every single time you buy or sell. Instead, you wait until the end of the accounting period (month, quarter, year) to tally up what you actually have on hand. So, purchase returns don’t hit an “Inventory” ledger directly. They flow through a Purchase Returns and Allowances contra‑account, which reduces the total purchases you reported for the period No workaround needed..
Think of it like a running total on a grocery receipt: you add up everything you bought, then you cross off the items you returned before you hand the receipt to the cashier at the end of the day That's the part that actually makes a difference..
The Accounting Entry
- Debit: Accounts Payable (or Cash, if you’ve already paid)
- Credit: Purchase Returns and Allowances
That credit shrinks the net purchases figure, which later feeds into your Cost of Goods Sold (COGS) calculation Easy to understand, harder to ignore..
Why It Matters / Why People Care
If you ignore returns, your COGS will be inflated, and your gross profit will look smaller than it really is.
That distortion can ripple through tax filings, budgeting, and even pricing decisions.
Retailers especially feel the sting—high return rates are the norm, not the exception. A shoe store that can’t accurately account for returns might think it’s losing money on a brand that’s actually doing fine The details matter here..
And it’s not just about profit. Inventory turnover ratios, reorder points, and cash‑flow forecasts all rely on the numbers you get after you close the books. A single mis‑recorded return can throw those metrics off enough to make you order too much or too little stock.
How It Works (or How to Do It)
Below is the step‑by‑step flow most businesses follow, from the moment the return is initiated to the final posting at period‑end.
1. Identify the Return
- Reason code: damaged, wrong item, over‑shipment, etc.
- Reference: original purchase order or invoice number.
- Quantity & cost: how many units, at what unit cost?
Having a clear reason code helps you later analyze return patterns—maybe a certain supplier is consistently sending faulty goods.
2. Issue a Return Authorization
Most companies require a Return Merchandise Authorization (RMA) before the supplier will accept the shipment.
The RMA includes:
- Customer or store ID
- Original PO number
- Item description and quantity
- Expected credit amount
That paperwork becomes the source document for your accounting entry.
3. Ship the Goods Back
Log the shipment in your warehouse management system (WMS).
Even though the periodic system won’t adjust inventory now, you still want a physical trail for audit purposes.
4. Record the Purchase Return
In the general ledger, make the entry mentioned earlier:
- Debit Accounts Payable (or Cash) – you’re reducing what you owe or getting cash back.
- Credit Purchase Returns and Allowances – this lowers total purchases.
If you receive a credit memo instead of a cash refund, you’d credit a Purchase Discounts or Accounts Receivable account, depending on the arrangement.
5. Update the Periodic Schedule
At the end of the period, you’ll prepare a Purchases Schedule that looks something like this:
| Description | Amount |
|---|---|
| Beginning Inventory | $X |
| Add: Purchases | $Y |
| Less: Purchase Returns | $(R) |
| Net Purchases = Y – R | $Z |
| Add: Freight‑in (if any) | $F |
| Cost of Goods Available (COGA) | $Z+F |
| Less: Ending Inventory | $E |
| Cost of Goods Sold (COGS) | $Z+F‑E |
That net‑purchases line is where the return actually makes a dent Small thing, real impact. And it works..
6. Reconcile with Physical Count
Once you do your physical inventory count, the returned items should already be back in the warehouse (or in transit).
If they’re missing, you’ll have a discrepancy that shows up as an inventory shrinkage adjustment later And that's really what it comes down to..
7. Close the Period
After you’ve posted COGS, the periodic system automatically updates the Inventory balance on the balance sheet.
All the purchase‑return activity is now baked into the numbers you’ll see on the income statement and balance sheet.
Common Mistakes / What Most People Get Wrong
Treating Returns Like Sales Returns
New accountants often mix up purchase returns with sales returns.
Which means sales returns reduce revenue; purchase returns reduce purchases. The accounts are on opposite sides of the ledger, and confusing them messes up both COGS and net sales Simple, but easy to overlook..
Forgetting to Credit the Right Account
Sometimes the credit goes to a generic “Miscellaneous Income” account instead of Purchase Returns and Allowances.
That inflates other‑income figures and hides the true cost of goods.
Not Matching the Original Cost
If you use the current purchase price rather than the original cost of the returned items, your net purchases get skewed.
Suppliers may have changed prices, but the return should be recorded at the cost you originally paid.
Ignoring Freight‑In Adjustments
When you return goods, you might also be returning the freight you paid to get them shipped.
If you don’t adjust the freight‑in expense, your COGS will stay higher than it should be And it works..
Skipping the RMA Documentation
Skipping the RMA means you have no paper trail. Worth adding: auditors love to ask, “Where’s the proof this return actually happened? ”
Without it, you risk a misstatement that could trigger a restatement later.
Practical Tips / What Actually Works
- Standardize the RMA form: Include fields for original PO, unit cost, and reason code. A template saves time and reduces errors.
- Automate the journal entry: Most ERP systems let you map an RMA to a pre‑set GL posting. One click, and you’re done.
- Run a “return variance” report each month: Compare the value of returns to the total purchases. A spike could signal a supplier quality issue.
- Link the WMS and GL: Even in a periodic system, having the warehouse flag a returned pallet helps you catch missing items before the physical count.
- Educate the receiving team: They should know to tag returned items with the same lot or serial number, making the later reconciliation smoother.
- Keep an eye on cash flow: If you get a cash refund, record the receipt promptly. A delayed entry can make your accounts payable look artificially high.
- Review the contra‑account regularly: Some companies forget to clear out old purchase‑return balances, which can cause the net‑purchases figure to drift over time.
FAQ
Q: Do I need to record a purchase return if I haven’t paid the supplier yet?
A: Yes. Even if the invoice is still open, you debit Accounts Payable (or the “Accrued Purchases” account) and credit Purchase Returns. This reduces what you’ll owe once the invoice settles That's the part that actually makes a difference..
Q: How does a purchase return affect the ending inventory count?
A: In a periodic system, the return itself doesn’t change the inventory balance until period‑end. When you do the physical count, the returned items should be on hand, so they’re included in the ending inventory figure used to calculate COGS But it adds up..
Q: Can I use the same account for purchase returns and purchase discounts?
A: Technically you could, but it’s a bad idea. Mixing the two makes it hard to analyze why your net purchases are lower—was it a discount for early payment or a return of goods? Separate accounts give you clearer insight.
Q: What if the supplier only issues a credit memo, not a cash refund?
A: Record a credit to Purchase Returns and Allowances and a debit to a “Supplier Credits” or “Accounts Receivable – Supplier” account. When you later apply that credit to a future purchase, you’ll offset it against the new invoice That's the part that actually makes a difference..
Q: Do purchase returns affect tax filings?
A: Absolutely. Since they reduce net purchases, they lower COGS, which in turn raises gross profit. Your taxable income will reflect that change, so make sure the returns are posted before you file.
That’s the long and short of purchase returns in a periodic inventory system.
Once you get the paperwork, the journal entry, and the end‑of‑period schedule all speaking the same language, the process stops feeling like a black box Worth knowing..
So the next time a box of “oops‑we‑sent‑the‑wrong‑size” shoes lands on your dock, you’ll know exactly where it belongs in the books—and why that little entry matters for the whole business. Happy returning!
