Aims & Objectives: The primary objective of this study is to determine whether an active cancer diagnosis results in an increased risk of perioperative TJA complications and postoperative mortality. The secondary objective is to analyze the effects of demographic factors on perioperative complication rates in cancer patients undergoing TJA., Materials & Methods: Patients with active cancer diagnoses undergoing total joint arthroplasty from 2014 to 2020 were included in this retrospective analysis. Patient data was obtained through ReachNet, which consisted of data from the University Medical Center, Tulane University Medical Center, Ochsner Health System, and Baylor Scott & White Health. ICD-9/10 codes were tagged for active cancer diagnoses within 365 days before surgery or 30 days after surgery to establish our active cancer population. Acute surgical complications within 30 days were identified by ICD codes., Results: Patient demographics included predominantly male (51.5 %), white (83 %), and non-Hispanic (96.5 %) patients followed by black individuals (15.9 %) with 47.5 % of patients being smokers. Cancer patients did have a higher acute complication rate (2.6 % vs 1.7 %), but this difference was not significant (p = .139). This difference was higher but also not significant after adjustment (aOR = 1.32, 95 % CI = 0.71-2.43, p = .377). After adjustment, increased Charlson Comorbidity Index (CCI), white race and non-elective surgery were significant contributors to complication risk. Complication rates decreased significantly with year. Nonelective surgeries were also associated with higher complication rates (8.2 % vs. 1.8 %, p = .014)., Conclusion: Patients with active cancer diagnoses demonstrated higher unadjusted rates of TJA acute surgical complications and increased adjusted CCI when compared to non-cancer patients. Identifying risk factors and demographics correlated with increased perioperative complications may provide physicians with necessary information to avoid negative TJA outcomes in cancer patients., (© 2024 The Authors.)