I believe the dealine is April 17 in the US. If you have not done so, this is a good time to do so. I found the Turbo Tax Online discount link still works (15% off).
On a separate note, more than 1.6 million people in China filed personal income tax for last year. Only individual has annual income over 120,000 Yuan need to report. The average income of that group was 320,000 Yuan (80% are workers, “Da Gong Zhu” in Chinese), and the average tax is about 50,000 Yuan. Wang Jianshuo has a good formula to calculate tax in his blog.