This section of the book is from the "Introduction To Public Finance" book, by Carl Copping Plehn.
The next resource, naturally, is new taxes. But the establishment of new taxes, or even the restoration of old taxes not in use at New taxes. the time of the war, is a matter requiring considerable time. Even if it were an easy matter to decide upon the best form of taxation and to get the necessary authority from the legislative branch of the government, the organization of the new administrative forces for the collection of the taxes is a matter requiring time. No new system of taxation reaches its normal revenue-yielding powers within many months of its enactment. If the taxes are entirely new, the time required is longer. But even if they are more or less familiar to the people from use on some previous occasion, a considerable lapse of time must intervene between the beginning of war and the receipt of sufficient new revenues to meet any considerable part of its expenses. Furthermore, the expenses of war are now so enormous that any system of taxation which raised, or attempted to raise, the entire amount needed during the probable duration of the war would be so burdensome as to crush the people. It is therefore extremely unwise, and practically impossible, to attempt to raise the entire cost of the war by immediate taxation. The only other resource is borrowing.