The benefits for the taxpayer from the reduction of tax evasion are expect to be more important than the cost of electronic transactions fees.
The power of governments on the property of citizens is already absolute even with the existence of cash. The difference lies only on the effective control that will lead to a fair implementation of decisions on everyone.
Cash has no fixed value and it can be considered as an investment since it is a form of currency and this means that it can significantly lose its value. The consumer is always free to choose another type of investment.
There are thousands of people, salaried and retired ones, who are barely surviving and do not have the opportunity to hide their income.
Cash outside banks is subjected to robberies. Anyway, the depositor may choose a bank that he trusts.
Although the abolition of cash will not eliminate the black money , it is certain that it will greatly reduce it, so it is worth it.
A policy of assets registration by itself is not enough because it depends on the sincere declaration of each one.