I concur with others , it does depend on where you live
75k wont go as far in London , as it might somewhere up north , or in some rural place
It depends on family situations , size , number of earners
For example , Corbyn wants to tax my familly more , but he forgets that cost of living is already astronomically high , esp in London ( although he should know, living in Islington ! ) , as well as the fact that people already have to pay enough tax like the Congestion Charge , Road Tax etc
Imo , Corbyn would do better to go after companies like Google , Starbucks and Amazon , and get them to cough up