The TVT device (Tension-free Vaginal Tape) is used in our Hospital to treat stress urinary incontinence, resulting in an excess cost for the Pharmacy. The Burch technique, used previously, does not require any specific medical device, but is invasive and requires a longer hospital stay. The objective of this study was to compare the financial impact of these two techniques, by defining the discriminant costs. Seventeen isolated Burch procedures and twenty one TVT procedures were included. The costs analysed concerned medical devices, medicinal products, laboratory procedures, operating time, hospital stay and duration of postoperative follow-up. The Burch procedure cost FFR 26,322 and the TVT procedure cost FFR 10,958. The TVT technique reduces the cost of hospitalisation and represents an economy of operative equipment and nursing workload (reduction of operating time and postoperative stay).