During the siege of Zamość that started two weeks prior to the signing of the truce on November 6, 1648, Bohdan Khmelnytsky had established diplomatic relations with government circles of the Polish–Lithuanian Commonwealth.
In the future, it was planned to establish a lasting peace, for which to the residence of Hetman in the beginning of 1649 had come a "committee" of the Commonwealth headed by Adam Kisiel.
Having concluded an armistice, Khmelnytskyi avoided the need to continue the campaign in late autumn during an epidemic that erupted in the Cossack army, which could have resulted in dire consequences for the insurgents.
However, by signing the truce, the Hetman was forced to withdraw Cossack troops from most of the western-Ukrainian cities and partially from Podillia (Podolia).
The truce of Zamość was short-lived, the Commonwealth first grossly violated it (the punitive offensive forces of the Grand Duchy of Lithuania into the Southern Belarus in January–February 1649).