Morrison Waite,
Railroad Company v. United States…
“ The tax is not on the interest as it accrues, but when it is paid. No provision is made for a pro rata distribution of the burden over the time the interest is accumulating, and as the tax can only be levied for and during the year 1871, we think, if the interest is in good faith not payable in that year, the tax is not demandable, either in whole or in part.There is no question here of earnings, for the finding is not as to what was earned by the company during the year 1871, but as to what was paid in 1872 on account of interest then for the first time falling due. ”
