The yen's tumbling value against foreign currencies, including the U.S. dollar, ramped up earnings in the period. A weaker yen increases the yen value of overseas earnings when repatriated to Japan and makes Japanese exports more competitive internationally.
Toyota booked a foreign exchange gain of 260.0 billion yen ($2.47 billion) in the period. The yen lost about 23 percent of its value against the dollar over the past year, Toyota said.
Big sales gains in North America and Japan also buttressed Toyota's global expansion.
Toyota kept its title as the world's biggest automaker in 2013 by selling a record 9.98 million vehicles and has already surpassed pre-financial crisis sales levels. Analysts estimate Toyota earned about as much profit in 2013 as General Motors Co. and Volkswagen AG combined.
Higher earnings outlook
In announcing fiscal third-quarter results today, the company lifted its earnings outlook to target record profits too. The higher goal underscores Toyota's full comeback from a string of tough years marred by the company's first operating loss in seven decades, a worldwide unintentional acceleration recall crisis and the 2011 killer earthquake-tsunami in Japan.
In the current fiscal year ending March 31, Toyota now targets record net income of 1.9 trillion yen ($18.06 billion), from a previous outlook of 1.67 trillion yen ($15.87 billion).
That compares with Toyota's record full-year net income of 1.718 trillion yen ($16.33 billion) in the fiscal year ended March 31, 2008, right before the economic crisis hit.
That year, the company booked record operating profit of 2.270 trillion yen ($21.57 billion) and all-time high revenue of 26.289 trillion yen ($249.85 billion).
Toyota predicts record operating profit of 2.4 trillion yen ($22.81 billion) in the current fiscal year, but the revenue forecast of 25.5 trillion ($242.35 billion) would be its second highest.
In the third quarter, Toyota's unit sales climbed 10 percent to 664,000 vehicles in North America, the carmaker's biggest market. The carmaker posted even more impressive gains at home in Japan, where sales advanced 13 percent to 540,000 vehicles.
Domestic sales rose partly on the back of Japan's improving economy and partly because of a rush to make big purchases before an April increase in the country's consumption tax.