> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.booko.nl/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Create and send a sales invoice

You can create your own sales invoices in Booko in three steps: **Customer details**, **Line items** and **Review**.

## Steps

1. Click **New invoice** (on the **Overview** or on **Revenue**).
2. **Customer details** – Pick an existing customer with **Choose from Relations**, or enter the details. Want to keep a new customer? Tick **Save this one-off customer to Relations**.
3. **Line items** – For each line, enter the description, quantity, price and VAT rate. Use **Add Line** to add lines. Under **Prices**, choose whether prices are **Incl. VAT** or **Excl. VAT**.
4. **Review** – Check the invoice. The invoice number is **Assigned when the invoice is issued**.
5. Want to email it right away? Tick **Send this invoice directly to [email address]** and click **Create and send**. Otherwise click **Create Invoice**.

## Good to know

- Booko saves your work automatically as a draft (**Draft saved**). Find drafts on **Revenue** under **Drafts** and continue with **Continue editing**.
- Send later? On **Revenue**, open **Actions** next to the invoice and choose **Send by email**.
- A mistake in a sent invoice? Choose **Actions** > **Create credit note** on that invoice.
- Automatic payment reminders are not available yet.

## Still stuck?

- Seeing **Complete your company details before invoicing**? Click **Complete company profile** and fill in the missing details (see "Invoice settings and company details").
- **Email send failed**? Check your customer's email address and try again via **Send by email**.
- Questions about the right VAT rate or VAT treatment are tax advice: ask your accountant via **Messages**, or ask for a colleague in the chat.