Copper perchlorate complex containing isopropylamine (ipa) has been prepared with the molecular formula [Cu(ipa)3(H2O)(ClO4)]ClO4. It was characterised by elemental analysis, IR spectroscopy and thermogravimetric data. Response of the complex to heat has been studied by thermogravimetry (TG) in static air and simultaneous thermogravimetry-derivative thermogravimetry-differential thermal analysis (TG-DTG-DTA) in flowing nitrogen atmospheres. The complex decomposes in three steps, although the resolution between the steps is less. Possible decomposition pathways have been proposed for decomposition in static air and flowing nitrogen atmosphere. Thermolysis kinetics have also been investigated using isothermal TG data recorded at five different temperatures and applying model-fitting and isoconversional methods. An application of model-fitting methods has yielded a single activation energy value, whereas an isoconversional method has yielded a series of activation energy values for each extent of conversion, α. Differences in decomposition patterns under air and inert atmosphere have been also discussed.