> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wisepim.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Update Cost/Margins
> Bulk update cost prices and profit margins. Set costs directly, hit a target margin, or apply a markup percentage across products.
Update cost prices across many products at once. Set costs directly, work back from a target margin, or apply a markup. WisePIM does the math for each product.
Use this to refresh costs after a supplier price change, or to lock in a consistent margin across your catalog.
## Update costs and margins
Check the products you want to update. Or use filters and select all matching results.
Click **Bulk Edit**. Search for "Cost" or "Margins" or find it under **Pricing & Discounts**.
Pick how to calculate costs: direct update, target margin, or markup percentage.
Set the amount, percentage, or target for the mode you chose.
Set rounding and scope, then click **Apply**.
## Update modes
| Mode | What it does | Formula |
| ---------------------- | --------------------------------------------------------------- | --------------------------------- |
| **Update cost prices** | Set, increase, or decrease cost by a fixed amount or percentage | Direct value change |
| **Set target margin** | Works the cost back from the selling price to hit a margin | Cost = Price × (1 - Margin / 100) |
| **Apply markup** | Works the cost back from the selling price using a markup | Cost = Price / (1 + Markup / 100) |
For **Update cost prices**, you can choose:
* **Fixed:** set or adjust by a specific euro amount.
* **Percentage:** adjust by a percentage of the current cost.
* **Set Value:** overwrite with an exact cost.
## Options
| Option | What it does | Default |
| --------------------------------------------- | -------------------------------------- | ------- |
| **Only update products with existing prices** | Skips products without a selling price | On |
| **Round costs** | Rounds to the nearest €0.01 | Off |
**Markup** and **margin** are not the same. A 50% markup on a €100 cost gives a €150 price. A 50% margin on a €150 price gives a €75 cost.
## Tips
* Use **Set target margin** for consistent profitability. Set a 40% margin and costs are worked back from the selling price.
* Keep **Only update products with existing prices** on so you don't set costs on products that aren't priced yet.
## Related
Adjust selling prices by a percentage or fixed amount.
Apply a sale price with an optional start and end date.
Add tiered pricing based on quantity.
Browse every bulk action available in WisePIM.