Commerce where the payment carries the deal.
Escrow, milestones, VAT and payments that route themselves, and heaps more payment protection.
Money committed up front, released as work lands
The awkward part of prepaying a contractor or supplier is that someone has to go first. Escrow the amount so they can see it is there, and release it against milestones. No side operates blind.
Checkout, with the leverage on your side
Two annoyances in online retail are cards that keeps working after a breach and a subscriptions that are easy to start and deliberately hard to stop. Both come from the payment living with the merchant. Here it lives with you.
The paperwork arrives with the money
Most accounting work exists because payment and context travel separately: the money lands, and someone matches it to an invoice afterwards. Carry the structured data on the payment and invoices, VAT and refunds reconcile themselves.
Decide what conditions you will take money under
If terms can travel with a payment, some of them will not suit your business: funds that can only be spent in certain ways, or that a buyer can pull back weeks later. Your account can state what it accepts, so unsuitable money is declined at the door.
Terms for both sides of the payment
Payment conditions are enforced by the buyer's account, while your receiving terms are enforced by your account. Fewer chargebacks to contest, fewer cancellation complaints, and reconciliation data that arrives with the money instead of being pieced together afterwards.