<p>The purpose of this research work is to apply quality control tools to reduce costs at the “R&amp;S DISTRIBUIDORES SAC”. A diagnosis of the current situation is conducted, and it is observed that the Warehouse area faces the most critical issues. The causes of the cost overruns affecting its profitability are detailed, such as the lack of product coding, insufficient inventory replenishment planning, inadequate training of personnel in customer service – warehouse, and insufficient space in the warehouse for inventory replenishment. A proposal for improvement is presented using statistical control and quality management tools. The application of the Quality Function Deployment (QFD) with its quality house, the Failure Mode and Effects Analysis (FMEA) matrix, and the DMAIC Six Sigma methodology improve the statistical behavior of the indicators and reduce the cost overruns that result in losses. The projected benefit is S/ 9,454.40 soles, and the economic evaluation of the proposal yields a Net Present Value (NPV) of S/ 5,192.55 and an Internal Rate of Return (IRR) of 1.82%.</p>