South Korea's central bank's latest move to increase key rates is expected to raise the burdens for those with personal credit loans, market watchers said Sunday.

The combined personal loans extended by the country's five major banks came to 97.4 trillion won ($89.6 billion) as of end-November, up 1.7 trillion won on-month, market data showed, rising at the sharpest pace this year. The combined personal credit debts is presumed to be higher when including those extended by online banks.

As the Bank of Korea raised the key rate from a record low of 1.25 percent to 1.5 percent last week, marking the first hike in more than six years, market watchers said local households are expected to face heavier burdens from their dues moving forward.