Czech self-employed individuals will experience a decrease in their social security contributions starting in July. This change affects all self-employed persons (OSVČ) and stems from a recent legislative amendment. The amendment reverses an earlier increase to the minimum assessment base for social security calculations. Previously, the base had been raised from 35% to 40% of the average wage; it will revert to 35%. The adjustment is being applied retroactively to January of this year, meaning eligible individuals may receive a reimbursement for overpayments made earlier in the year. This legislative shift aims to alleviate the financial burden on the self-employed sector.