Stripe fee calculation

Solution 1:

the easiest way is to add expand for balance transaction

$charge = \Stripe\Charge::create(array(
              "amount" => $totalAmount,
              "currency" => $currency_code,
              "source" => $stripeToken,
              "transfer_group" => $orderId,
              "expand" => array("balance_transaction")
            ));

This will give you what stripe has charged as fee and then you can do remaining calculations

Solution 2:

for someone looking for the javascript code to calculate stripe fee (maybe to ask customers to cover the stripe fee). i wrote small script to do it

/**
 * Calculate stripe fee from amount
 * so you can charge stripe fee to customers
 * lafif <[email protected]>
 */
var fees = { 
    USD: { Percent: 2.9, Fixed: 0.30 },
    GBP: { Percent: 2.4, Fixed: 0.20 },
    EUR: { Percent: 2.4, Fixed: 0.24 },
    CAD: { Percent: 2.9, Fixed: 0.30 },
    AUD: { Percent: 2.9, Fixed: 0.30 },
    NOK: { Percent: 2.9, Fixed: 2 },
    DKK: { Percent: 2.9, Fixed: 1.8 },
    SEK: { Percent: 2.9, Fixed: 1.8 },
    JPY: { Percent: 3.6, Fixed: 0 },
    MXN: { Percent: 3.6, Fixed: 3 }
};

function calcFee(amount, currency) {
    var _fee = fees[currency];
    var amount = parseFloat(amount);
    var total = (amount + parseFloat(_fee.Fixed)) / (1 - parseFloat(_fee.Percent) / 100);
    var fee = total - amount;

    return {
        amount: amount,
        fee: fee.toFixed(2),
        total: total.toFixed(2)
    };
}

var charge_data = calcFee(100, 'USD');
alert('You should ask: ' + charge_data.total + ' to customer, to cover ' + charge_data.fee + ' fee from ' + charge_data.amount );
console.log(charge_data);

https://gist.github.com/c3954950798ae14d6caabd6ba15b302b