Common/Calculator/Amount.php
private function ati(float $amount): float
    {
        $result = $amount;

        foreach ($this->taxes as $tax) {
            $result += $amount * $tax->getRate() / 100;
        }

        return Money::round($result, $this->currency);
    }
private function ati(float $amount): float
    {
        $result = $amount;

        foreach ($this->taxes as $tax) {
            $result += $amount * $tax->getRate() / 100;
        }

        return Money::round($result, $this->currency);
    }
Adds the taxes to the given amount.

@param float $amount

@return float