Introduction: Studies have shown that psoriasis increases the risk of atrial fibrillation (AF). However, it is unclear if co-existing psoriasis worsens outcomes in AF hospitalizations. This study aims to compare the outcomes of patients primarily admitted for AF with and without a secondary diagnosis of psoriasis. Methods: Data were abstracted from the National Inpatient Sample (NIS) 2016 and 2017 Database. NIS is the largest inpatient hospitalization database in the United States. The NIS was searched for hospitalizations for adult patients with AF as principal diagnosis with and without psoriasis as secondary diagnosis using ICD 10 codes. The primary outcome was inpatient mortality. Hospital length of stay (LOS), total hospital charges, odds of undergoing ablation, pharmacological, and electrical cardioversion were secondary outcomes of interest. Multivariate logistic and linear regression analysis was used accordingly to adjust for confounders. STATA software was used to analyze the data. Results: There were over 71 million hospitalizations in the combined NIS 2016 and 2017 database. Out of 821,630 hospitalizations for AF, 4,490 (0.55%) had Psoriasis. Hospitalizations for AF with psoriasis had similar inpatient mortality [0.78% vs 0.92%, AOR 0.95, 95% CI (0.44-2.04), P=0.895], total hospital charge [$41,869 vs $39,145, P=0.572] and longer LOS [3.72 vs 3.37 days, P=0.023] compared to those without psoriasis. Odds of undergoing ablation [5.0% vs 4.2%, AOR 1.12, 95% CI (0.82-1.52), P=0.481], pharmacologic cardioversion [0.11% vs 0.38%, AOR 0.29, 95% CI (0.04-2.10), P=0.219] and electrical cardioversion [19.2% vs 17.5%, AOR 0.99, 95% CI (0.83-1.19), P=0.930] were similar in both groups. Conclusion: Hospitalizations for AF with psoriasis had longer LOS compared to those without psoriasis. AF hospitalizations with psoriasis however had similar inpatient mortality, total hospital charges, odds of undergoing ablation, pharmacologic and electrical cardioversion compared to those without psoriasis.