"But where a tax is levied on property not specifically, but according to its value, to be ascertained by assessors appointed for that purpose upon such evidence as they may obtain, a different principle comes in. The officers in estimating the value act judicially; and in most of the States provision is made for the correction of errors committed by them, through boards of revision or equalization, sitting at designated periods provided by law to hear complaints respecting the justice of the assessments. The law in prescribing the time when such complaints will be heard, gives all the notice required, and the proceeding by which the valuation is determined, though it may be followed, if the tax be not paid, by a sale of the delinquent's property, is due process of law."[588]
Nevertheless, it has never been considered necessary to the validity of a tax that the party charged shall have been present, or had an opportunity to be present, in some tribunal when he was assessed.[589] Where a tax board has its time of sitting fixed by law and where its sessions are not secret, no obstacle prevents the appearance of any one before it to assert a right or redress a wrong; and in the business of assessing taxes, this is all that can be reasonably asked.[590] Nor is there any constitutional command that notice of an assessment as well as an opportunity to contest it be given in advance of the assessment. It is enough that all available defenses may be presented to a competent tribunal during a suit to collect the tax and before the demand of the State for remittance becomes final.[591] A hearing before judgment, with full opportunity to submit evidence and arguments being all that can be adjudged vital, it follows that rehearings and new trials are not essential to due process of law.[592] One hearing is sufficient to constitute due process;[593] and the requirements of due process are also met if a taxpayer, who had no notice of a hearing, does receive notice of the decision reached thereat, and is privileged to appeal the same and, on appeal, to present evidence and be heard on the valuation of his property.[594]
Notice and Hearing in Relation to Special Assessments
However, when assessments are made by a political subdivision, a taxing board or court, according to special benefits, the property owner is entitled to be heard as to the amount of his assessments and upon all questions properly entering into that determination.[595] The hearing need not amount to a judicial inquiry,[596] but a mere opportunity to submit objections in writing, without the right of personal appearance, is not sufficient.[597] If an assessment for a local improvement is made in accordance with a fixed rule prescribed by legislative act, the property owner is not entitled to be heard in advance on the question of benefits.[598] On the other hand, if the area of the assessment district was not determined by the legislature, a landowner does have the right to be heard respecting benefits to his property before it can be included in the improvement district and assessed; but due process is not denied if, in the absence of actual fraud or bad faith, the decision of the agency vested with the initial determination of benefits is made final.[599] The owner has no constitutional right to be heard in opposition to the launching of a project which may end in assessment; and once his land has been duly included within a benefit district, the only privilege which he thereafter enjoys is to a hearing upon the apportionment; that is, the amount of the tax which he has to pay.[600] Nor can he rightfully complain because the statute renders conclusive, after said hearing, the determination as to apportionment by the same body which levied the assessment.[601]
More specifically, where the mode of assessment resolves itself into a mere mathematical calculation, there is no necessity for a hearing.[602] Statutes and ordinances providing for the paving and grading of streets, the cost thereof to be assessed on the front foot rule, do not, by their failure to provide for a hearing or review of assessments, generally deprive a complaining owner of property without due process of law.[603] In contrast, when an attempt is made to cast upon particular property a certain proportion of the construction cost of a sewer not calculated by any mathematical formula, the taxpayer has a right to be heard.[604]
Sufficiency and Manner of Giving Notice
Notice, insofar as it is required, may be either personal, or by publication, or by statute fixing the time and place of hearing.[605] A State statute, consistently with due process, may designate a corporation as the agent of a nonresident stockholder to receive notice and to represent him in proceedings for correcting assessments.[606] Also "where the State * * * [desires] to sell land for taxes upon proceedings to enforce a lien for the payment thereof, it may proceed directly against the land within the jurisdiction of the Court, and a notice which permits all interested, who are 'so minded,' to ascertain that it is to be subjected to sale to answer for taxes, and to appear and be heard, whether to be found within the jurisdiction or not, is due process of law within the Fourteenth Amendment * * *."[607] A description, even though it not be technically correct, which identifies the land will sustain an assessment for taxes and a notice of sale therefor when delinquent. If the owner knows that the property so described is his, he is not, by reason of the insufficient description, deprived of his property without due process. Where tax proceedings are in rem, owners are bound to take notice thereof, and to pay taxes on their property, even if assessed to unknown or other persons; and if an owner stands by and sees his property sold for delinquent taxes, he is not thereby wrongfully deprived of his property.[608]
Sufficiency of Remedy
When no other remedy is available, due process is denied by a judgment of a State court withholding a decree in equity to enjoin collection of a discriminatory tax.[609] Requirements of due process are similarly violated by a statute which limits a taxpayer's right to challenge an assessment to cases of fraud or corruption,[610] and by a State tribunal which prevents a recovery of taxes imposed in violation of the Constitution and laws of the United States by invoking a State law limiting suits to recover taxes alleged to have been assessed illegally to taxes paid at the time and in the manner provided by said law.[611]