The composite consumer sentiment index (CCSI) stood at 101.6 in April, high with 1.8 points from March, according to the Bank of Korea (BOK).
It kept an upward trend since December 2018, rising above 100 for the first time in seven months.
The reading above 100 indicates optimists outnumbered pessimists.
The country’s real gross domestic product (GDP) fell 0.3 per cent in the first quarter from the prior quarter, logging the negative growth in five quarters.
However, expectations ran high for the government’s extra budget of 6.7 trillion won ($5.8 billion), which was forecast to raise the real GDP growth by 0.1 percentage point.
The central government separately distributed $9 billion of tax revenue surplus to local governments in early April.
It was expected to help stimulate the lackluster economy.
The consumer sentiment was also bolstered by stability in the real estate market, caused by the government’s effort to control speculative investment in the property market.