Social security reform is expected to be a key policy for Prime Minister Shinzo Abe's ruling Liberal Democratic Party if he goes ahead with a reported plan to call a snap Lower House election in late October, according to a senior government official.

The official said the prime minister's platform will include using some of the revenue from the consumption tax hike, planned for 2019, which will rise to 10 percent from 8 percent, to expand child care support.

As an election campaign promise, Abe reportedly is also considering pledging to boost government spending for education.