This is the 10654th most frequent Polish word.
dopłata
A surcharge or additional payment.
In this sentence, 'dopłata' is used to mean an additional fee or charge that must be paid.
Musisz uiścić dopłatę za nadprogramowy bagaż.
You have to pay a surcharge for excess luggage.
Here, 'dopłata' denotes an extra cost included in the invoice, related to delivery services.
Dopłata za dostawę jest uwzględniona w rachunku.
The delivery surcharge is included in the bill.
In this usage, 'dopłata' refers to a supplemental payment necessary for upgrading to a larger room size.