Asrori et al. 2026. The Effect of Contribution Income and Claim Expense on Underwriting Surplus/Deficit with Investment Results as a Moderating Variable in Sharia Life Insurance Companies Registered with the OJK for the 2018-2022 Period. Al-Kharaj: Journal of Islamic Economic and Business. 8, 2 (May 2026). DOI:https://doi.org/10.24256/kharaj.v8i2.10148.