# Allow Zero Rate
**YouTube:** [How to Enable the Entry of a Zero Basic Rate in Purchase?](https://www.youtube.com/watch?v=zKCGNd7UcHQ)
## How to Enable the Entry of a Zero Basic Rate in Purchase?
In this tutorial, we will explore the **Allow Zero Rate** option in **Logic ERP**, which enables users to record free or replacement items in a **Purchase Voucher**.
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### **Enabling the Zero Rate Option**
* Navigate to the **Purchase Configuration**.
* Locate and **enable** the option labeled **"Allow Zero Rate."**
* This feature is particularly useful for handling **free items** or **replacement products** received from suppliers.
Let's Keep this feature enable to observe its impact on billing.
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### **Creating a Purchase Transaction with a Zero Rate Item**
1. Open the **Purchase Voucher** window.
2. Enter a purchase transaction with the following:
* **One normal item** (purchased at a standard rate).
* **One free or replacement item** (for which a zero rate is required).
3. In the **Basic Rate** field of the free item, leave the rate as **zero**.
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### **System Behavior for Zero Rate Items**
* When the **Basic Rate** is set to **zero**, a **dropdown list** appears automatically.
* Select the appropriate reason for the **zero rate** (e.g., **sample product** or **promotional item**).
* Since this item is received **free of cost** from the supplier, its value will **not** be included in the **final bill amount**.
As you can see in the image above, as soon as the basic rate is entered as zero, a dropdown appears.
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### **Benefits of Using the Zero Rate Feature**
**Accurate Purchase Records** – Ensures correct documentation of free or promotional items.\
**Seamless Accounting** – Excludes free items from total bill calculations.\
**Better Inventory Tracking** – Clearly differentiates between paid and free stock.
By following these steps, you can effectively manage free or replacement items in **Logic ERP**, ensuring proper accounting and inventory control.
