SELF INVOICING

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18 September 2017 whether a seperate bill book is required for self invoicing....

18 September 2017 Separate bill book is not required.

18 September 2017 why not seperate.... in gstr 1 details of bill issued in this 1 also counted but this is our purchase

23 July 2025 Great question! Letโ€™s clarify the concept of **self-invoicing** under GST and whether a **separate bill book** is required.

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### โœ… What is Self-Invoicing?

Self-invoicing is **raising an invoice on your own** when you purchase **goods or services from an unregistered supplier** under the **Reverse Charge Mechanism (RCM)**.

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### ๐Ÿ“Œ Is a **Separate Bill Book** Required?

**Legally, no separate bill book is mandated**, but it is **practically advisable**. Here's why:

#### โœ… Reasons \*\*Why a Separate Bill Book is NOT Mandatory:

* **No explicit requirement under GST law** to maintain a separate book for self-invoices.
* The **self-invoice is a compliance document**, not a sales invoice.
* You just need to **maintain proper serial numbering** and **record keeping**.

#### โš ๏ธ However, maintaining a **separate series or bill book** for self-invoicing is considered **good practice**:

* It helps in **distinguishing self-invoices from normal purchases or sales**.
* Makes **GSTR-1 and GSTR-3B reporting easier**, especially under audit or assessment.
* Helps in tracking **RCM liability** and **input tax credit (ITC)** claimed.

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### ๐Ÿ“˜ GSTR-1 Implication:

Youโ€™re right that in **GSTR-1**, self-invoiced details show up as **outward supply under RCM**, even though it's a **purchase** from your side. Thatโ€™s why:

* Keeping it in a **separate series** (even if not in a separate book) is **highly recommended**.
* Use a prefix like **"RCM/" or "SI/"** to distinguish such invoices.

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### โœ… Conclusion:

* **Not mandatory** to maintain a separate bill book for self-invoicing.
* But **advisable** to use a **separate invoice series** or **register** to make accounting and compliance easier.

Let me know if you'd like a **sample format for a self-invoice under RCM**.


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