## Zoho Billing - Product, solutions, integrations, support, and resources Index

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# How do I change the default Invoice Number?

To change the default format of the invoice number:

*   Go to **Settings** from the top-right corner.
    
*   Select **Invoices** under _Sales_.
    
*   Enter a **Prefix** and **Next Number** under _Invoice Number_ in the General tab.
    
    **Insight:** The \*\*Prefix\*\* that you enter will remain constant. However, the \*\*Next Number\*\* will be incremented by \*\*1\*\* for every subsequent invoice. For example, if your Prefix is INV and your Next Number is 001, this is what your invoice numbers would look like, in order of generation: INV-001, INV-002, INV-003 and so on.
    
*   Click **Save**.
    

Now, the invoices that are generated will follow this format for their invoice numbers.

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