Can my customers pay by card on my white label travel portal with the money going into my own account?

Yes, card payments taken on your portal can settle into your own account rather than anyone else's. The portal is connected to a payment gateway that you hold in your own business name, so the customer pays on your website, under your branding, and the gateway pays the money out to your bank on its normal payout cycle.

What is possible does depend on which gateways your portal supports and on the country your business is registered in. The widely used international gateways are usually straightforward, but a gateway that is popular only in your own market may need to be added first, and that work is not always covered by every plan. Opening the merchant account is a matter between you and the gateway or your bank, and they will want your company documents before they approve it.

It also helps to keep two things separate in your mind. Collecting money from the traveller is not the same as paying the supplier. You may take the full amount from your customer on the portal while the airline or hotel is still being paid from a deposit or a credit line you hold with that supplier, so money coming in and money going out will not always fall on the same day. Refunds normally have to travel back through the same gateway the customer paid with, which can take a few working days.

Before you fix a launch date, check which gateways your portal already supports in your market, and ask your bank or gateway what they need to open a merchant account in your business name.