"The President considered it essential not to burden the national exchequer and preferred to forgo his salary", President Secretariat Press Wing said in a press release on Tuesday.
Former president Arif Alvi was drawing Rs 8,46,550 per month, which was fixed by Parliament in 2018.
Zardari is one of the richest politicians in Pakistan.
Zardari, co-chairman of the PPP, took oath as President of Pakistan for a second term at a ceremony at Aiwan-i-Sadr in Islamabad on Sunday.
Separately, Interior Minister Mohsin Naqvi, following the steps of Zardari, also decided to forego his salary while in office citing the economic challenges faced by the country.
Taking to X, Naqvi said that he committed to serving the nation in challenging times "in every possible way".