Migrating to Australia after the age of 45 is challenging under most skilled migration visas, as age is a significant factor in the points test, with maximum points awarded to applicants aged 25-32. Generally, applicants over 45 do not qualify for points-based skilled visas. However, family visas, business innovation visas, or humanitarian visas may be options regardless of age. Some employer-sponsored visas may also consider older applicants depending on the employer’s needs. It is important to check the department's requirements for specific visa options and seek professional advice for options beyond the age limit.