New Zealand Student visa - Financial requirements

How much savings do I need to show for a student visa for countries like Germany, Ireland, Canada, Australia, New Zealand, and the UK?

How many months of bank statements are required for visa application and what if there are large transactions in New Zealand?

How much cash do I need to show in my bank account for New Zealand or Ireland visa applications?

Will a government job GPF statement or salary slips be accepted as financial proof for visa application in New Zealand?

Will the visa officer check only my ITR or also my spouse's in New Zealand?

Is it necessary to file ITR and show family income documents to meet the funding requirements for a student visa to New Zealand or Australia?

What documents and proof of funds are acceptable for New Zealand student visa, especially regarding source of funds and investments like PPF, LIC, and business income?

Will a zero income ITR filed by my father be a problem for showing finances for Australia or New Zealand student visa?