Abstract Objective To investigate the effect of rigid ankle tape on functional performance, self-efficacy and perceived stability, confidence and reassurance during functional tasks in participants with functional ankle instability. Design Clinical measurement, crossover design. Methods Participants (n=25) with functional ankle instability (Cumberland Ankle Instability Score < 25) were recruited from university students and sporting clubs. Participants performed five functional tests with and without the ankle taped. The tests were: figure-8 hopping test, hopping obstacle course, star excursion balance test (SEBT), single-leg stance and stair descent test. Secondary outcome measures were self-efficacy and perception measures. Results Rigid tape significantly decreased the stair descent time by 4% (p=0.014), but had no effect on performance in the other tests. Self-efficacy increased significantly (p<0.001). Perceived stability, confidence and reassurance also increased with the ankle taped (p<0.05) during the stair and two hopping tasks, but not during the SEBT or single-leg stance test. Conclusion Although taping the ankle did not affect performance, except to improve stair descent, it increased self-efficacy and perceived confidence in dynamic tasks. These findings suggest that taping may reduce apprehension without affecting functional performance in those with functional ankle instability and permit continued physical activity or sport participation.