The war demonstrated the massive revenue-generating power of the income tax. Rates were raised to levels utterly inconceivable before the conflict. When the tax was enacted in the U.S. in 1913, the top rate was 7%. Before the war was over, it had topped out at 77%.
The war brought a high demand for steel ships and many St. John's merchants profited by selling their vessels. This directly impacted the shipping of supplies to Newfoundland and Labrador. Consequently, people experienced shortages of some supplies and higher prices for others (web3).
By 1918, almost a quarter of the colony's revenue was needed to pay the interest on its loans. In addition, government now faced the cost of paying pensions to returning servicemen. This increasing public debt would have major effects on Newfoundland and Labrador both in the short and long term. To help cope with the debt, government introduced both business and personal taxes. At the time, the public thought that this personal income tax was a temporary measure