Japan's current account surplus fell sharply in May 11 earthquake and tsunami of March continues to affect exports.
The surplus fell 51.7% to 590.7bn yen ($ 7.27bn, £ 4.55bn) compared with a year earlier, said Finance.
However, that is less than most analysts had expected.
The data show that while the economy continues to suffer from a disaster, is recovering quickly.
May decline, the current account surplus, people monthly decline immediately after the earthquake and tsunami led to the destruction of the north-east of Japan.
In April, the surplus fell by 69.5%.
Although the supply chain and manufacturers online returns exports still suffering.
The data show that exports fell 9.8% in May from the previous year.
And imports grew by 14.7%, mainly due to higher energy costs.
That translated into the second largest trade deficit in memory, the ministry said.
The current account is the broadest measure of trade with the rest of the world.