The tax wedge is the gap between an employer’s total cost of labor and the worker’s net pay after income tax and social contributions. It is a useful measure of how heavily employment is taxed, because it shows how much of a salary is lost to the state before it reaches the employee.
In cyber security and digital risk management, the tax wedge matters because payroll-heavy systems are attractive targets for fraud, identity abuse, and account manipulation. Attackers may try to alter salary records, redirect payslips, or abuse weak controls in payroll and HR platforms. Defenders use the concept to understand how taxes and contributions affect labor costs, budget planning, and the value of protecting sensitive employee data. A high tax wedge can also encourage shadow payroll practices or compliance mistakes, both of which create audit and security weaknesses. In practice, it is a policy and financial metric that intersects with secure payroll administration and data integrity.