Major domestic banks have experienced significant increases in nonperforming loans, their first-quarter results show.

China Construction Bank Corp had 90.81 billion yuan ($14.52 billion) in NPLs as of March 31, up 5.54 billion yuan from the end of 2013. The NPL ratio climbed 0.03 percentage point to 1.02 percent.

Bank of China Ltd had an NPL balance of 80.32 billion yuan, up 7.05 billion yuan, and its NPL ratio rose 0.02 percentage point to 0.98 percent.