King Matthias increased the serf's taxes; he switched the basis of taxing from the "portae" to the households, and occasionally, they collected the royal dues twice a year during wartime. Counting the vassals' tribute, the western contributions, the local nobility's war payment, the tithes, and the urban taxes, Matthias's annual income reached 650,000 florins; for comparison, the Ottoman Empire had 1,800,000 per year. In contrast to popular belief, historians have speculated for decades that the actual sum altogether could circle around 800,000 florins in a good year at the peak of Matthias's reign, but never surpassed the financial threshold of one million florins, a previously commonly accepted number. In 1467, Matthias Corvinus reformed the coin system for easier accumulation of taxes and manageable disbursements and introduced an improved dinar, which had a finer silver content (500‰) and weighed half a gram. He also re-established its ratio, where one florin of gold equaled 100 dinars of silver, which was so stable that it remained in place until the mid-16th century.