Temporal evolution of the nanoscale disc-shaped gamma';'; (Ni3Nb) and spherical gamma'; (Ni3(Al,Ti)) strengthening pre-cipitates during double-stage ageing treatment of the laser powder-bed fusion (LPBF) fabricated IN718 Ni-based superalloy is studied by thermodynamic-based modeling, electron microscopy, and small-angle neutron scat-tering (SANS). The precipitation kinetics of both gamma';'; and gamma'; particles in the multi-component/multi-phase IN718 alloy system was successfully predicted by the Langer-Schwartz-Kampmann-Wagner approach. The simulated particle size and volume fraction during ageing was validated against electron microscopy and SANS results, respectively. The size and volume fraction of the gamma';'; phase was monotonically increased during the first ageing stage up to about 100 nm and 14%, respectively, but interestingly unchanged during the second stage. On the other hand, the volume fraction of gamma'; phase was sharply increased to about 15% after about 100 s and kept constant until the end of the first ageing stage, where it then decreased to about 7%. The gamma'; particle size monotonically increased up to about 20 nm. According to the determined temporal evolution of the nanoscale precipitates, a shorter ageing treatment of the LPBF IN718 superalloy compared to the conventionally manu-factured alloy could be suggested.