---
title: "CalculationPolicy – API-Referenz · Quittio"
description: "Decisions of the calculator that are not fixed by EN 16931. The policy is configuration of the run and not stored with the invoice: the same data calculated under another policy can give other amounts."
canonical_url: "https://quittio.dev/docs/api/Quittio/Core/Calculation/CalculationPolicy"
locale: de
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  "og:image": "https://quittio.dev/og/quittio-de.jpg"
  "og:image:alt": "Quittio: E-Rechnungen für PHP und Laravel. Rechtssicher, validiert, archiviert, mit geprüfter Beispielrechnung."
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  "og:title": "CalculationPolicy – API-Referenz · Quittio"
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  "twitter:image:alt": "Quittio: E-Rechnungen für PHP und Laravel. Rechtssicher, validiert, archiviert, mit geprüfter Beispielrechnung."
---

> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api) / [Quittio](https://quittio.dev/docs/api/Quittio) \\ [Core](https://quittio.dev/docs/api/Quittio/Core) \\ [Calculation](https://quittio.dev/docs/api/Quittio/Core/Calculation)

# CalculationPolicy

final readonly class in quittio/core

`Quittio\Core\Calculation\CalculationPolicy` · [Source](https://github.com/Quittio/quittio/blob/v0.7.1/packages/core/src/Calculation/CalculationPolicy.php#L14)

Decisions of the calculator that are not fixed by EN 16931. The policy is configuration of the run and not stored with the invoice: the same data calculated under another policy can give other amounts.

## Properties \#

| Property | Type | Description |
| --- | --- | --- |
| `$declaredAmounts` readonly | `[DeclaredAmountsMode](https://quittio.dev/docs/api/Quittio/Core/Calculation/DeclaredAmountsMode)` | |

## Methods \#

| Method | Description |
| --- | --- |
| `->__construct()` | |
| `::fromArray()` | From the configuration key declared\_amounts (keep, recalculate or reject). |

### `__construct()`#

```
public function __construct(
    DeclaredAmountsMode $declaredAmounts = \Quittio\Core\Calculation\DeclaredAmountsMode::Keep,
)
```

| Parameter | Type | Description |
| --- | --- | --- |
| `$declaredAmounts` | `[DeclaredAmountsMode](https://quittio.dev/docs/api/Quittio/Core/Calculation/DeclaredAmountsMode)` = `\Quittio\Core\Calculation\DeclaredAmountsMode::Keep` | |

### `fromArray()`#

```
public static function fromArray(array<array-key, mixed> $config): self
```

static

From the configuration key declared\_amounts (keep, recalculate or reject).

| Parameter | Type | Description |
| --- | --- | --- |
| `$config` | `array<array-key, mixed>` | |

<dl><dt>Returns</dt>
<dd><code>self</code></dd>
<dt>Throws</dt>
<dd><code><a href="https://quittio.dev/docs/api/Quittio/Core/Exceptions/ConfigurationException">ConfigurationException</a></code> – for an unknown mode</dd></dl>

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