A treat-to-target (T2T) strategy is a treatment plan in which the clinician treats the patient aggressively enough to reach and maintain explicitly specified and sequentially measured goals. To apply a T2T strategy, some conditions should be met. First, a proactive, clear endpoint should be used and a threshold should be defined. Second, a choice between several effective therapies must be available. Third, the endpoint should be supported by findings from randomised controlled trials supporting early aggressive treatment. Fourth, the strategy should be cost-effective. Finally, it needs to be acceptable by the stakeholders. The objective of this review was to verify if the conditions for applying the T2T strategy were met in psoriatic arthritis (PsA) and axial spondyloarthritis (axSpA), using a narrative review. Based on the currently available literature, the conditions for applying the T2T in PsA and axSpA were partially met. First, proactive outcome measures are available; however, there is no clear consensus regarding the optimal one. Second, there is a reasonable choice of approved therapies for both diseases. Third, additional randomised controlled trials demonstrating the effectiveness of a T2T approach are still needed. Fourth, cost-effectiveness studies are needed and should include patients from different healthcare systems. Fifth, the implementation of T2T recommendations in routine care and the adherence to its application in clinical practice should be promoted. In summary, preliminary data suggest that T2T might be beneficial to patients with PsA and axSpA. However, further studies are needed to meet all the criteria before strongly advocating for T2T strategies.