The new administration will also inherit over $240 billion in accumulated debt by the end of March, mainly due to the COVID-19 expenses.
Bureau of Treasury data showed that the country's debt-to-GDP ratio stood at 63.5 per cent as of end-March, well over the internationally recommended threshold of 60 per cent.
"The priority is economy," Marcos said earlier this month, assembling his economic team to steer the economy.
The Philippine economy grew by 8.3 per cent year on year in the first quarter of 2022.
The government is optimistic that the solid first-quarter 2022 GDP growth will help the country attain its target of 7 to 8 per cent growth this year.
Marcos Jr.'s win in the May election also marked a stunning comeback for the Marcos political dynasty, which was ousted after a popular revolt in 1986.
Ferdinand Marcos led the country from 1965 until 1986, imposing martial law and presiding over a period of widespread human rights abuses, corruption and poverty.
That rule ended in 1986, when a mass uprising saw millions of people take to the streets and the Marcos family fled the country for Hawaii.
Marcos Jr., a long-time politician who returned to the Philippines in 1991, has since sought to paint his father's presidency as a "golden period" of growth and prosperity.
His popularity was buoyed by an aggressive social media drive, which proved especially appealing to voters not old enough to have experienced the years of dictatorship first-hand.
Meanwhile, critics levelled accusations that his social media campaign was rife with misinformation and whitewashed atrocities under his father's rule.
He has denied these allegations.