Persistently rising general price levels brought about by rising input costs. In general, there are three factors that could contribute to cost-push inflation: rising wages, increases in corporate taxes, and imported inflation (when imported raw or partly-finished goods become more expensive, often as a result of currency depreciation). For inflation to be cost-push in nature, increases in input prices must affect a large proportion of the country's producers, so as to be able to push up the general price level.