Creating Invoices {#vas-smb-creating-invoices-overview}
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Payment Center supports creating both single item and itemized invoices to bill your customers.

Invoice Types
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Payment Center supports two types of invoices:

Single Item Invoice
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Use for flat-rate services or simple charges without itemization. This invoice type contains a single line item with one price.

Itemized Invoice
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Use for multiple products or services that require detailed billing. This invoice type supports up to 30 line items, each with its own description, unit price, and quantity.

Discounts and Taxes (Key Rules)
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When applying discounts and taxes to invoices, follow these rules:

* Choose either invoice-level or line-item level discounts
* Choose either invoice-level or line-item level taxes
* Mixing levels is not supported

You cannot apply both invoice-level and line-item level discounts or taxes within the same invoice.

Invoice States
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After creating an invoice, it exists in one of the following states:

Draft
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The invoice is editable and not visible to the customer. Draft invoices can be modified or deleted before sending.

Sent
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An email is sent to the customer with a payment link. The payment link is active and the customer can make payment.  
Invoices remain editable until paid or cancelled, allowing you to make changes as needed.

Optional Features
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When creating invoices, you can enable the following optional features:

Partial payments
:
Allow customers to pay invoices in multiple installments.

Shipping or freight charges
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Add delivery costs to the invoice.

Invoice numbers
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Assign custom invoice numbers for your tracking system.