You should plan for rent being at the top end of that range, but utilities being lower. The rest is doable, however food might be a little more, depending on how you live. Some items will be cheaper than you expect, and some things will be dearer. Biedronka (a supermarket chain) is a good place to shop - it isn't expensive and the quality is good.
You'll need to pay ZUS (social and health insurance) if you're on a normal contract of employment. Use this tool to calculate the difference between gross and net salary (you'll probably need to put it through google translate:
money.pl/podatki/kalkulatory/plac
Aboout your wife's tax allowance, you should check with colleagues who have foreign spouses when it's time to make your annual tax return, however your HR department will deduct the normal tax from the start.
@Ram1986 Hi Ram, can you please share hwz your experience so far. How much it costs you on monthly basis? I am in discussion to get an offer of 12000 zloty monthly gross. I'll be staying with my wife. It's for Wroclaw. Can you please tell how much will be my expenses (consider similar life style as you mentioned earlier)? Is Wroclaw expensive city in comparison to ther cities in Poland?
I heard,if a person earned 4000 PLN,in a month and he has to pay 2800 PLN (tax and insurance)....the remaining balance is 1200 PLN.then how he survive,,,is it true?