---
title: "Interfaces"
description: "Under Interfaces in the Master Data folder, you define configurations for importing and exporting data and assigning (mapping) the imported or exported source data. Here you can specify custom import routines or create what is referred to as a flexible interface."
source_url: https://support.lucanet.com/en/documentation/income-taxes/income-taxes/master-data-income-taxes/interfaces
language: en
last_updated: 2026-05-28
---
# Interfaces

## Overview

Under **Interfaces** in the **Master Data** folder, you define configurations for importing and exporting data and assigning (mapping) the imported or exported source data. Here you can specify custom import routines or create what is referred to as a flexible interface. The following workspaces are available:

[Configuration](https://support.lucanet.com/en/documentation/income-taxes/income-taxes/master-data-income-taxes/interfaces/interfaces-configuration.md): In the **Configuration** workspace, you can choose interfaces to be used for a period-independent, automated export. This workspace is used only in exceptional cases. Interfaces are usually defined period dependently in the **Structure** workspace.

[Structure](https://support.lucanet.com/en/documentation/income-taxes/income-taxes/master-data-income-taxes/interfaces/interfaces-structures.md): In the **Structure** workspace, you can define the format of import files.

[Position Mapping](https://support.lucanet.com/en/documentation/income-taxes/income-taxes/master-data-income-taxes/interfaces/interfaces-mapping.md): In the **Position Mapping** workspace, you can define how source items that you import from a source system are mapped to the target fields if you use an interface structure of type **Import**. Several multiple mapping files can be created for each interface and period here.

[Import Mapping](https://support.lucanet.com/en/documentation/income-taxes/income-taxes/master-data-income-taxes/interfaces/interfaces-import-mapping.md): In the **Import Mapping** workspace, you can define how source items that you import from a source system are mapped to the target fields when you use an interface structure of type **Import (enhanced)**. A mapping file can be created for each interface and period.

## Importing via Flexible Interfaces

The flexible interface enables import into the following workspaces:

- IFRS
- Local balance (HB/StB)
- Questionnaire
- Other
- Pillar 2
- Tax Form
- Import Subgroup
- Validation Subgroup

## Supported Technologies

Besides file-based import and export, Income Taxes currently supports the following standard technologies:

- **Web Services**: Web services are interfaces based on open standards for business-to-business communication between different systems. Web services can be used, for example, to retrieve and process data from Income Taxes in a consolidation system (e. g. via REST service).
- The **import of the tax balance sheet** can also be defined as an alternative to the LB/TB deviation. Since Income Taxes stores only the deviation, it must be calculated from the tax balance sheet value and the local balance value during the import process.