The required IELTS score for UKVI (UK Visas and Immigration) visa applications varies depending on the type of visa and the specific requirements of the institution or employer. Generally, for a Tier 4 (General) student visa, a minimum overall band score of 4.0 in all four skills (Listening, Reading, Writing, and Speaking) is required. For other types of visas, such as a Skilled Worker visa, higher scores may be needed, typically around band 6.5 or 7.0. Always check the specific requirements for the visa category you are applying for.