README

A set of interfaces and methods to clean up your application's tax calculations. The TaxCalculation class allows you to do calculations with plain numbers and objects that implement the HasTax interface on the fly.

use Spatie\TaxCalculator\TaxCalculation;

$items = $myCart->getItems(); // Should return an array of items that implement `HasTax`

TaxCalculation::fromCollection($items)->basePrice(); // 10.00
TaxCalculation::fromCollection($items)->taxPrice(); // 2.10
TaxCalculation::fromCollection($items)->taxedPrice(); // 12.10

$delivery = TaxCalculation::fromTaxedPrice(7.50, 0.21);

TaxCalculation::fromCollection($items)->add($delivery)->taxedPrice(); // 19.60

Spatie is a webdesign agency based in Antwerp, Belgium. You'll find an overview of all our open source projects on our website.

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Installation

You can install the package via composer:

composer require spatie/tax-calculator

Usage

Interfaces

The interfaces are provided so you can keep working with your domain objects instead of having to pass around floats everywhere. However, they're not strictly necessary to do calculations.

Spatie\TaxCalculator\HasTax

public function basePrice(): float;
public function taxedPrice(): float;
public function taxPrice(): float;

• basePrice: The item's price excluding taxes
• taxedPrice: The item's price including taxes
• taxPrice: The item's tax amount (= taxedPrice() - basePrice())

Spatie\TaxCalculator\HasTaxWithRate

public function taxRate(): float;

HasTaxWithRate extends HasTax, and also has a taxRate method. This is useful for items that have a fixed tax rate, but can't be used on collections that contain items with various rates.

Traits

Spatie\TaxCalculator\Traits\HasTaxWithRate

The HasTaxWithRate trait provides default implementations of taxPrice and taxedPrice, since they can be deducted by a simple multiplication of basePrice and taxRate.

Calculations

...

Changelog

Please see CHANGELOG for more information what has changed recently.

Testing

$ composer test

Contributing

Please see CONTRIBUTING for details.

Security

If you've found a bug regarding security please mail security@spatie.be instead of using the issue tracker.

Credits

• Sebastian De Deyne
• All Contributors

About Spatie

Spatie is a webdesign agency based in Antwerp, Belgium. You'll find an overview of all our open source projects on our website.

License

The MIT License (MIT). Please see License File for more information.