Inyemezabwishyu ni inyandiko itangwa nyuma yo kwishyura serivisi cyangwa ibicuruzwa, igaragaza ibisobanuro by’amafaranga yishyuwe, ibyo umuntu yaguze cyangwa serivisi yakoresheje, ndetse n’amatariki ya serivisi cyangwa ibicuruzwa byatanzwe. Iyi nyandiko ikunze gutangwa n'uwacuruje cyangwa watanze serivisi, kandi ikubiyemo amakuru y’ingenzi nka nomero y’inyemezabwishyu, izina ry'uwishyura, izina ry'uwatanze inyemezabwishyu, ndetse n'ibisobanuro by’ibyakoreshejwe. Reba ibindi