Approximately one-third of the female population has been estimated to suffer from stress urinary incontinence. Surgical management of this disorder has been an area of ongoing innovation since the beginning of the 20th century. Better understanding of the underlying patomechanisms resulted in the invention of suburethral sling, that proved to be very effective in terms of the cure rates. The introduction of sling techniques also caused a considerable reduction of the rates of intra- and postoperative complications of incontinence treatment. Unfortunately modern anti-incontinence surgery continues to be associated with a high risk of both, perioperative morbidity and long-term adverse outcomes, even with the recently introduced single-incision techniques. The article focuses on intra- and postoperative complications of sling techniques in anti-incontinence surgery. Both, common and rare adverse outcomes are widely discussed.