Sistem notranjega nadzora javnih financ je zasnovan tako, da daje razumno, ne pa tudi absolutno zagotovilo o doseganju ciljev. Temelji na priznanem modelu COSO, ki vključuje pet sestavin kontrolnega sistema, in sicer kontrolno okolje, oceno tveganj, kontrolne aktivnosti, informiranje in komuniciranje ter nadziranje. Oceno vzpostavljenega sistema notranjega nadzora javnih financ morajo občine vsako leto podati v Izjavi o oceni notranjega nadzora javnih financ. Iz teh Izjav v občinah za leto 2007 izhaja, da je navedeni sistem v občinah v povprečju še dokaj slabo razvit. Notranje revidiranje je poleg finančnega poslovodenja in notranjih kontrol pomemben del notranjega nadzora javnih financ. Izvajajo ga notranji revizorji, bodisi v lastnih ali skupnih notranjerevizijskih službah, lahko pa tudi kot zunanji izvajalci. Občine so dolžne zagotoviti notranje revidiranje v eni izmed navedenih oblik, pogostost pa je odvisna od višine občinskega letnega proračuna. Iz rezultatov izvedene raziskave izhaja, da vse mestne občine zagotavljajo notranje revidiranje, v večini primerov ustrezno zagotavljajo notranje revidiranje tudi srednje občine, kar nekaj manj kot polovica malih občin pa ne spoštuje zakonsko predpisanega zagotavljanja notranjega revidiranja.

The system of public finance internal control has been designed to give reasonable, but no absolute assurance about the achievement of goals. It is based on the recognized COSO model that includes five elements of control system. They are: control environment, risk assessment, control activities, informing, communicating, and control. Every year municipalities must submit an estimate of the established public finance internal control system in the Statement of Estimate of Public Finance Internal Control. It derives from these statements of the municipalities for the year 2007 that the stated system in municipalities was rather poorly developed on average. Besides financial management and internal control internal auditing is an important part of internal control of public finance. It is conducted by internal auditors organised in their own or joint internal audit services, and also by external auditors. Municipalities are obliged to ensure internal auditing in one of the aforementioned forms, and the frequency depends upon the amount of a municipality's annual budget. It follows from the results of the research conducted that all municipalities ensure internal auditing; in most cases internal auditing is adequately ensured also by middle-sized municipalities, meanwhile less than half of small-sized ones do not follow the legally prescribed internal auditing.