Any business has a responsibility to shareholders to maximize profits.
The LL is the sole shareholder in their business.
They should charge the max amount that they can, so it doesnt matter at all whether anyone thinks tax and other costs are included or not.
At the moment rents in Dublin are going up, partly because of the increased costs on landlords, who need to increase rent to stay above water. Those who are ok at the moment are also increasing rents, simply because they can. They are maximising profits. Rents are rising. Now any landlord in Dublin that couldnt pass on the extra taxes and charges before, probably can now.
And this crap about not being able to charge above market rates is just that - crap. It means nothing at all. Imagine 5 apartments in a building that are renting for €1000PM. Most would say thats market rate and you cant charge more. Well something has to give or rents would never go up if noone can charge more than €1000. What if the landlords furniture is better quality than the rest. His is worth more. If he asks the tenant for more and gets it, then thats the market rate. If he advertises for more and someone will pay, then thats market rate. Upper market rates must be tested, in order to raise the market rate. If noone but, then thats another story.
Threshold really just make it up as they go along and should be exposed for the chancers they are.