Supplycart Money

A small Laravel 13 value-object package for storing and calculating monetary amounts as integers. It supports configurable precision, currency-aware formatting, Eloquent casting, arithmetic, and tax calculations through a simple contract.

Requirements

• PHP 8.5 or later with intl and json
• Laravel 13

Installation

composer require supplycart/money
php artisan vendor:publish --tag=money-config

The service provider is discovered automatically by Laravel.

Usage

Amounts passed to the constructor or of() are integers in the configured minor precision:

use Supplycart\Money\Money;

$price = Money::of(1_250, 'MYR');

$price->getAmount();       // 1250
$price->getDecimalAmount(); // "12.50"
$price->format();           // localized MYR output

Use fromDecimal() when the input is a decimal major-unit value:

$price = Money::fromDecimal('12.50', 'MYR');

Four-decimal storage is supported for calculations that require extra precision:

$price = Money::of(12_500, 'MYR', 4);

$price->getDecimalAmount(); // "1.2500"

Eloquent cast

use Illuminate\Database\Eloquent\Model;
use Supplycart\Money\Casts\MoneyValue;

final class Product extends Model
{
    protected function casts(): array
    {
        return [
            'unit_price' => MoneyValue::class,
        ];
    }
}

If the model has a currency attribute, the cast uses it. Models may expose a getDecimalValue() method to select a precision greater than the default two decimal places.

Tax calculations

Implement Supplycart\Money\Contracts\Tax, attach it with withTax(), then use getTaxAmount(), afterTax(), or beforeTax().

Development

Run the same quality gates used by CI:

composer lint:check
composer analyse
composer test

composer lint applies Laravel Pint formatting. PHPStan runs at level max. The reusable coverage checker in scripts/check-coverage.php enforces an 85% minimum against a Clover report when a coverage driver is available.