to intermunicipal inequities, a statutory process of equalization of the aggregates of ratables provided an antidote to overcome .the failure of the local assessors to comply with the tax laws. The more difficult problem was the unequal enforcement of the tax laws as among the individual taxpayers as to which nothing short of municipalwide revaluation and faithful adherence to the standard of value as to all categories of taxable property would suffice.
By reason of the age and depth of the problem, no one knew what would be the impact upon municipalities and their taxpayers if compliance with the basic tax laws were achieved. The sundry facets were discussed in the several opinions filed in Switz v. Middletown Township, 23 N. J. 580 (1957).
Chapter 51 was enacted to deal with the problem. It differentiated among real property and classes of personal property, to the end that the burden of government would fall upon each category to the degree the Legislature thought proper. Chapter 51 withstood various constitutional challenges, except in minor respects not here pertinent. Switz v. Kingsley, 37 N. J. 566 (1962).
As noted above, the effective date of Chapter 51 (except as to one section not here significant) was postponed. The reason was a sharp controversy as to the impact Chapter 51 would have upon the owners of different classes of property. No one knowing how much personal property would be taxed under Chapter 51, there was concern that Chapter 51 would lead to substantial shifts in tax burden to homes ox to other real property or to personal property, any of which movements, if severe, could conceivably raise havoc with the local economy.
To get facts, the Legislature adopted Chapter 9 of the Laws of 1963 which required that confidential information returns be filed by owners of tangible personalty used in business. The Acting Director of the Division of Taxation analyzed 174,164 such returns. Of these, 132,326 were deemed usable for immediate purposes, and on the basis of them the Acting Director reported that Chapter 51 would lead to in