Manuscript type: Research paper Research aims: This study aims to investigate the prevalent choice of capital investment appraisal practices and the influence of firm characteristics on the choice of these practices. Design/Methodology/Approach: A survey is conducted by using a sample of 186 Chief Financial Officers (CFOs) from companies listed on the Colombo Stock Exchange platform in Sri Lanka. Research findings: This study reveals that the most popular capital investment appraisal techniques used in Sri Lanka encompass Net Present Value (NPV), followed by Internal Rate of Return (IRR), Payback (PB), Accounting Rate of Return (ARR) and Discounted Payback (DPB). As for the capital investment appraisal tools incorporating risks, Sri Lankan firms prefer uncertainty absorption in cash flows, followed by sensitivity analysis, probability analysis, scenario analysis, and adjusting the required returns. Emerging real options are used at the embryonic stage in Sri Lanka. The use of naive capital budgeting practices is mostly preferred by small firms managed mainly by CFOs with non-MBA educational qualifications with short tenures in the firms. In contrast, sophisticated and advanced capital budgeting practices are mostly used by large firms managed by MBA qualified CFOs with a long tenure in the firms. As for industry differences, ARR is primarily applied by non-MBA CFOs in most non-manufacturing firms. None of the other methods trigger any significant difference in terms of industry types.