Why we let you bring your own payment gateway

When you take a card payment through Quantum Solutions Invoicing, the money goes from your customer to your merchant account. It does not pass through us, sit in a balance with your name on it, or arrive on a payout schedule. We are not in the middle.

That is an unusual choice for an invoicing product, and it costs us a revenue line that most of our category takes for granted. Here is why we made it.

What most invoicing tools do

The standard model is that the tool is the merchant of record, or close to it. Your customer pays the platform. The platform holds the funds, takes a percentage, and pays you out — typically in two to seven days, sometimes longer for a new account.

This is genuinely good for onboarding. You sign up and you can take a card payment the same afternoon, with no underwriting and no acquirer relationship. For a business that has never taken card payments, that is a real gift.

But it has three consequences that are easy to miss until they bite.

Your cash sits somewhere else. Between capture and payout, money you have earned is on someone else's balance sheet. Usually that is fine. Occasionally — a risk review, a disputed transaction, an unusually large invoice — it is not, and there is no negotiation available.

You pay twice. There is the acquiring cost, which exists no matter what, and there is the platform's margin on top. The second one is the price of not having to arrange the first.

The relationship is not yours. Rates, chargeback handling, reserve terms — all of these are between the platform and its acquirer. If your volume grows to the point where you could negotiate better, you cannot, because you are not a party to the agreement.

What we do instead

You connect your own gateway. We initiate the payment; your gateway authorises it; your acquirer settles it into your account. We see that an invoice was paid and mark it so. We never touch the money.

Concretely, that means:

• No payout schedule. Settlement timing is between you and your acquirer, which for most is one to three working days — and it is a relationship you can push on.
• No second margin. You pay your acquiring costs and nothing on top for the payment.
• Your rates are yours. If you negotiate a better rate, you get it. We are not in the path.
• Your chargeback relationship is yours. You represent yourself to your acquirer, with your own history.

The trade-off, stated plainly

You need a gateway of your own, and getting one involves underwriting. For a business already taking card payments, connecting it is configuration. For one that is not, it is a real piece of setup measured in days, not minutes — an application, business documents, and a decision from an acquirer that is not guaranteed.

We are not going to pretend otherwise. If you need to accept a card this afternoon and have no merchant account, a platform that is the merchant of record will serve you better today. Our bet is that most businesses invoicing other businesses either already have a gateway or are better off with one.

Why this shapes the product

Not holding funds changes what we can build, mostly for the better.

We cannot offer instant payouts or cash advances, because we have no float to offer them from. We also cannot freeze your money, lose it in a risk review, or change our payout terms — because there is nothing to freeze.

It also means we have no incentive to keep you inside a payment flow. A tool that earns on payment volume has a reason to make bank transfer slightly inconvenient. We earn on the subscription, so the only thing we are optimising is whether the invoice gets paid.

What it looks like in practice

You connect your gateway once, with per-currency credentials where your gateway needs them. Invoices carry a pay link. Your customers get a portal where they can save a card and pay subsequent invoices in one click. Refunds go back to the original payment method, and the credit note is issued alongside — the mechanics are in how to refund a paid invoice.

If you are setting this up for the first time, how to take card payments on an invoice covers what a gateway and a merchant account actually are and how they fit together.