Сrystal structure, temperature and field dependences of magnetization, high-field susceptibility, and magnetocaloric effect (MCE) of Ho1-xYx(Co0.84Fe0.16)2 polycrystalline compounds (x = 0-1) in magnetic fields up to 90 kOe in a temperature range of 5 - 400 K are investigated. An analysis of temperature dependences of magnetization (σ) showed that, depending on the yttrium content (x), up to three magnetic phase transitions can be simultaneously present in the studied samples: spin-reorientation (Tsr), magnetic compensation point (Tcomp), and Curie temperature (TC). The temperature dependence of the high-field susceptibility (χhf) of all samples with x < 1 has an extremum in the vicinity of 100 K, where a significant MCE is observed, associated with a sharp change in the magnetization of the rare-earth sublattice. The temperature dependences of the magnetic entropy change (∆Sm) and the adiabatic temperature change (∆Tad) have a complex shape and reflect all the above-mentioned magnetic phase transitions and four types of magnetic structures observed at different x.