The contenders are expected to answer questions from anchors and spar over key issues, including national security, the economy, European affairs and trans-Atlantic relations.
The debate will be broadcast simultaneously by Poland’s three largest television networks: state-run TVP and private broadcasters Polsat and TVN.
Details, including the debate's format and moderators, have yet to be finalised, according to media reports.
Presidential contenders include Warsaw Mayor Rafał Trzaskowski, deputy leader of the centrist Civic Platform (PO) party; right-wing historian Karol Nawrocki, backed by the opposition Law and Justice (PiS) party; and far-right candidate Sławomir Mentzen.
Also in the running are lower-house Speaker Szymon Hołownia, leader of the centre-right Poland 2050 group, as well as leftist politicians Małgorzata Biejat and Adrian Zandberg.
Poland’s presidential election is set for May 18. If no candidate secures more than 50 percent of the vote, a runoff will be held two weeks later.
The winner will serve a five-year term as head of state, overseeing defence and foreign policy and holding veto power over legislation.
Incumbent President Andrzej Duda, in office since 2015, is barred from seeking a third term under Poland's constitution. His second term ends on August 6.
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Source: IAR/PAP