Invoice items determine what you invoice customers and how amounts are calculated. Each invoice item appears as a separate line item on an invoice.
You manage invoice items in Configuration › Invoicing › Invoice Items.
They form the building blocks of products and are essential for correct price calculation, tax application and invoice presentation.
What does this part show?
The Invoice Items page shows an overview of all invoice items within your organization, including:
Name of the invoice item (with utility icon for consumable items)
Tax code (separate rates for private individuals and organizations)
Invoiced on (calculation basis)
Tier calculation (how tiers are applied)
Actions (edit/delete on hover)
Display and availability may depend on:
Active filters
User Permissions
Context (e.g. viewed within a product with active period indicator)
Layout
Overview list
Each row represents one invoice item with:
Name
On consumption: utility icon (e.g. electricity, water).
Within a product: active period visible with green indicator if active.
Tax code
Private and Organization separately.
Displayed as a percentage (e.g., 21%). If not set: None.
Invoiced on
Consumption (e.g. Energy – kWh)
Subscription (e.g. Contract – Month)
Custom entity property (e.g. Location – Units)
Tier calculation
Invoice Period or Tariff Period
Actions
Edit / Delete (visible on hover)
Filters & Search
Search by name
Filter by:
Calculation type (Consumption, Subscription, Custom)
Utility type (e.g., Heat, Electricity, Water)
Empty status
If no invoice items exist:
Empty status message
Call to create the first invoice item
Create button
Actions
Available actions
Create: define new invoice item
Edit: change name, description, tax codes, calculation and scales
Delete: soft delete (automatically removed from products)
Availability
Actions depend on rights
Deleting has no effect on existing invoices
Behaviors & Logic
Invoice items are not invoiced immediately; they are first linked to products.
In invoice generation:
The system retrieves all active invoice items from the product.
Calculates quantities based on the calculation type.
Applies rates from invoice rates.
Applies the correct tax code (private individual/organization).
Creates invoice lines in a specified order.
Changes to an invoice item will only apply to future invoices.
Problem | Solution |
Invoice item is not visible | Check filters and permissions |
Tax rate shows None | Link a valid tax code with active period |
Unable to remove visible | Item is soft deleted; check if you have sufficient rights |
Item visible but not invoiced | Check if the item is linked to a product and is active |
New invoice item not appearing in product | Add the item explicitly to the product |
Incorrect amounts on invoice | Check calculation type, unit and associated rates |
Staffels work unexpectedly | Check Invoice Period vs Rate Period |
Consumption = 0 | Check meter connection and measurement data |
Why do I see a green dot next to an invoice item in a product?
This indicates that the item is currently active within that product.
What is the difference between Invoice Period and Tariff Period?
Invoice period resets scales per invoice; rate period follows the rate structure.
Can I edit an invoice item that has already been invoiced?
Yes, but changes will only apply to future invoices.
Can one product contain multiple invoice items?
Yes, products consist of one or more invoice items.
Why does an invoice item have two tax rates?
For different customer types: private and organization.
What happens if I delete an invoice item?
The item will be removed from products; existing invoices will remain unchanged.
How do I determine the order on the invoice?
By changing the order of invoice items within the product.
Do invoice items support multiple languages?
Yes, name and description are translatable via the translation action.
Invoice Item: Definition of what is invoiced and how it is calculated
Calculation type: Method to determine the amount (Consumption, Subscription, Custom)
Consumption: Calculation based on meter readings
Subscription: Periodic fixed costs
Custom entity property: Calculation based on a custom field
Tier calculation: Application of scales to quantities
Tax Code: VAT rate per customer type
Product: Bundle of invoice items that are invoiced together
Invoice rate: Price structure (scales and rates)
Utility Type: Type of service (e.g., Electricity, Water, Heat)
Activity Period: Period during which an invoice item is active within a product