Kit for realization of a modular pallet; wherein said kit comprises the following plastic elements: - at least two supporting assemblies, each one comprising: a) a crosspiece with a lower side suitable for facing the ground, and an upper side; said crosspiece comprising at least two fixing areas obtained on the upper side; each fixing area comprising fixing means; b) a supporting leg for each fixing area; said supporting leg comprising an upper portion with upper fixing means, and a lower portion with lower fixing means; said lower fixing means being suitably configured to cooperate with the fixing means of the fixing area of the crosspiece; - a monoblock platform with an upper side and a lower side; said platform comprising a plurality of fixing areas obtained on the lower side, one for each supporting leg of the supporting assemblies of the kit; each fixing area comprising fixing means suitably configured to cooperate with the upper fixing means of the upper portion of the supporting leg; characterized in that: - said supporting leg has a box-shaped structure, is internally hollow and is open on the bottom; wherein the upper portion has smaller dimensions than the lower portion in such a way that the upper portion can be fitted inside the lower portion of an identical supporting leg in such a way that the supporting legs can be stacked one on top of the other one; and - each crosspiece comprises a notch under each fixing area, said notch being suitably configured to contain a fixing area of an identical crosspiece, at least partially, so that the crosspieces can be stacked one on top of the other one. - at least two supporting assemblies, each one comprising: a) a crosspiece with a lower side suitable for facing the ground, and an upper side; said crosspiece comprising at least two fixing areas obtained on the upper side; each fixing area comprising fixing means; b) a supporting leg for each fixing area; said supporting leg comprising an upper portion with upper fixing means, and a lower portion with lower fixing means; said lower fixing means being suitably configured to cooperate with the fixing means of the fixing area of the crosspiece; a) a crosspiece with a lower side suitable for facing the ground, and an upper side; said crosspiece comprising at least two fixing areas obtained on the upper side; each fixing area comprising fixing means; b) a supporting leg for each fixing area; said supporting leg comprising an upper portion with upper fixing means, and a lower portion with lower fixing means; said lower fixing means being suitably configured to cooperate with the fixing means of the fixing area of the crosspiece; - a monoblock platform with an upper side and a lower side; said platform comprising a plurality of fixing areas obtained on the lower side, one for each supporting leg of the supporting assemblies of the kit; each fixing area comprising fixing means suitably configured to cooperate with the upper fixing means of the upper portion of the supporting leg; - said supporting leg has a box-shaped structure, is internally hollow and is open on the bottom; wherein the upper portion has smaller dimensions than the lower portion in such a way that the upper portion can be fitted inside the lower portion of an identical supporting leg in such a way that the supporting legs can be stacked one on top of the other one; and - each crosspiece comprises a notch under each fixing area, said notch being suitably configured to contain a fixing area of an identical crosspiece, at least partially, so that the crosspieces can be stacked one on top of the other one.