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Purchase Cost Adjustments

A purchase cost adjustment corrects the cost of goods you have already received. Freight arrives on a separate invoice, customs comes in weeks later, a supplier credit changes the price - the stock is on your shelf at the wrong cost, and this document fixes it properly instead of by editing history.

Menu path: Purchases > Purchase Cost Adjustments

Screenshot from the live OSOSS Dashboard

Why landed cost matters

Your margin is the gap between what you sold something for and what it truly cost you to have it on the shelf. If the invoice price was recorded and the freight was not, every margin figure on those goods is overstated - and the more you sell, the more confidently wrong the number becomes.

What the adjustment shows

The document is unusually transparent about its effect, which is what makes it safe to use:

ColumnMeaning
Old unit cost / New costBefore and after, per unit
Old total cost / New total costBefore and after, in total
Unit delta / Delta amountThe change itself
On hand quantity / On hand quantity appliedHow much of the affected stock is still in stock, and how much of the change lands there
Sold quantity applied / Sold impact amountHow much was already sold, and the effect on that already-recognised cost of sales
Inventory impact amountThe change to your inventory valuation
Adjustment type, reason, reference noteWhy this happened, in writing

The split between on-hand and sold is the heart of it. Stock still on the shelf simply revalues. Stock already sold cannot be revalued in the past, so its share of the change hits cost of sales instead - and the document tells you exactly how much went each way.

Create a cost adjustment

  1. Create the adjustment against the Bill whose cost is changing.
  2. Choose the adjustment type and enter the new cost or the change amount per affected line.
  3. Read the impact columns before saving. The inventory impact and the sold impact are the two numbers your accountant will ask about.
  4. Write the reason and a reference note - the freight invoice number, the customs declaration, the supplier credit reference. An adjustment without a reference is impossible to defend at audit.
  5. Save. Valuation and cost of sales are updated according to the split shown.
Warning: Adjustments affect reported margin for periods that may already be closed or reported. Check the sold impact amount and, where the period matters, discuss it before posting.
Tip: Enter freight and customs on the original bill as extra expenses whenever they arrive in time. Adjustments are the correct tool for late costs, but the cheapest landed cost is the one that was right the first time.

Full reference

Every option and control on this page, at a glance.

Form fields (11)

Bill ID, Date, Invoice quantity, Item ID, Note, Number, Product, Quantity on hand, Total cost, Type, Unit cost

Standard list tools

Every list page in OSOSS shares these controls:

Related pages

What you can do on this page

Every action on this page, step by step. What you see depends on your role, so a control your account is not set up for simply does not appear.

Add a record

  1. Click Add above the table - some pages label it New or show a + icon.
  2. Complete the form. Required fields carry a red asterisk and the form will not submit until they are filled.
  3. Click Save. Validation runs on submit; any field that fails shows its message directly beneath itself, and the form scrolls to the first problem.
  4. You land back on the list with the new record in place.

Fields on this form: Bill ID, Date, Invoice quantity, Item ID, Note, Number, Product, Quantity on hand, Total cost, Type, Unit cost

Searchable dropdowns (customer, product, account, branch...) read live data - start typing to filter rather than scrolling. Most also let you create the missing record inline so you don't lose the form you are in.

Edit a record

  1. Open the row's actions menu at the end of the row and choose Edit, or open the record and use Edit there.
  2. The form loads with current values. Change only what you need.
  3. Click Save.
Documents that are already posted to accounting, paid, or fulfilled lock the fields that would change history. That is deliberate - issue a refund, a credit note, or an adjustment instead of rewriting the original.

Export the list

  1. Filter and choose your columns first - the export mirrors exactly what is on screen, not the whole table.
  2. Click Export All.
  3. The file downloads as a spreadsheet: one row per record, your visible columns in your order.