How the hell this Poland's ZUS is calculated?

Can someone please tell me who ZUS is calculated. the bases, the personal allowances.

And income tax for an individual who is working full time.

I give you an example how you can explain it to me.

UK tax year 6 April to 5 April (following year)
Yearly personal allowance: £7475 (monthly=£622.92); this means that if yearly you earn below £7475 you pay no tax. but above that you pay only the difference and its calculated (7476-7475)*20%

National Insurance:
if you earn more than £146 a week and up to £817 a week, you pay 12 per cent of the amount you earn between £146 and £817.

I know many of you here work in Poland! So can I get a brief idea please!!! Thanks

I think ZUS is 200 euro a month, no matter what you earn. Not sure if there is even a tax free allowance in Poland.

zus.pl/default.asp?p=1&id=35

ZUS. what u pay.

Milky - this is only one of the options (your value is overestimated anyway, but close enough). This is for people who act as a company.

You can use below and choose various options to calculate nett salary.

Poland salary calculator: gazetapraca.pl/gazetapraca/0,91738.html

Complications arise as you have to know what type of contract you have.
I believe personal allowance (koszty uzyskania przychodu) is about 120 PLN per month - you pay on the rest.

I have tried the calculator given above.
Basically, if you earn 10,000 per month (gross) , you get 7,000 take home (net)
Put your gross salary in the calculation and you can get an idea of how much you will pay.