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Invoice
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<?php /** * Invoice Ninja (https://invoiceninja.com). * * @link https://github.com/invoiceninja/invoiceninja source repository * * @copyright Copyright (c) 2025. Invoice Ninja LLC (https://invoiceninja.com) * * @license https://www.elastic.co/licensing/elastic-license */ namespace App\Helpers\Invoice; /** * Class for tax calculations. */ trait Taxer { public function taxer($amount, $tax_rate) { return round($amount * (($tax_rate ? $tax_rate : 0) / 100), 2); } public function calcAmountLineTax($tax_rate, $amount) { return $this->formatValue(($amount * $tax_rate / 100), 2); } public function calcInclusiveLineTax($tax_rate, $amount) { return $this->formatValue($amount - ($amount / (1 + ($tax_rate / 100))), 2); } }
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