ПРРО and fiscal receipts
Accepting card payment for a service generally brings a fiscal-receipt duty, it is yours rather than ours, and no acquirer removes the registration step.
Accepting card payment for a service generally brings a fiscal-receipt obligation with it, and it is yours. It does not transfer to us because the booking happened here — we are not a party to the payment.
Two things are worth separating, because they are easy to confuse and the difference decides how much work is left for you:
Issuing the receipt is a technical function, and some acquirers provide it as part of the payment. WayForPay supplies it at no extra charge. Monobank's acquiring portal integrates third-party ПРРО providers, so that route exists there too.
Registering the ПРРО with the tax authority is yours either way. No acquirer does this for you. It means an ЕЦП key, the relevant ДПС forms, and uploading the key — and where an acquirer's built-in fiscalisation is used, it typically works against a single payout requisite.
So "this acquirer has built-in ПРРО" is a convenience, not an exemption. Ask your accountant which obligations apply to you specifically, before the first payment rather than after it — that conversation is much cheaper than a correction.