Fingqa lokho okushiwo yi-GDP nokuthi isetshenziselwa ini futhi isetshenziselwa ini.
Context:Umkhiqizo wasekhaya ophelele (i-GDP) yisilinganiso semali senani lemakethe lazo zonke izimpahla nezinsizakalo zokugcina ezikhiqizwa futhi zithengiswe esikhathini esithile ezweni noma emazweni, ngokuvamile "ngaphandle kokubalwa kabili kwezimpahla nezinsizakalo eziphakathi ezisetshenziselwa ukuzikhiqiza". I-GDP ivame ukusetshenziswa nguhulumeni wezwe elilodwa ukukala impilo yalo yezomnotho. Ngenxa yesimo sayo esiyinkimbinkimbi nesiqondayo, lesi silinganiso sivame ukubuyekezwa ngaphambi kokuba sithathwe njengesibonakaliso esinokwethenjelwa. I-GDP (egameni) ngomuntu ngamunye, nokho, ayikhombisi umehluko ezindlekweni zokuphila kanye namanani wokwehla kwamandla emali emazweni; ngakho-ke, ukusebenzisa isisekelo se-GDP ngomuntu ngamunye ngokulingana kwamandla okuthenga (i-PPP) kungasiza kakhulu uma kuqhathaniswa namazinga okuphila phakathi kwezizwe, kanti i-GDP yegama iyasiza kakhulu ngokuqhathanisa umnotho kazwelonke emakethe yamazwe omhlaba. Ingqikithi ye-GDP ingahlukaniswa futhi ibe umnikelo womkhakha ngamunye noma umkhakha wezomnotho. Isilinganiso se-GDP kubantu abaphelele esifundeni yi-GDP yomuntu ngamunye (ebizwa nangokuthi yi-Mean Standard of Living).  Izincazelo ze-GDP zigcinwa yinqwaba yezinhlangano zezomnotho zikazwelonke nezamazwe ngamazwe. I-Organisation for Economic Co-operation and Development (OECD) ichaza i-GDP ngokuthi "isilinganiso esihlanganisiwe sokukhiqiza esilingana nesamba samanani afakwe kuwo wonke ama-resident kanye namayunithi ezikhungo abambe iqhaza ekukhiqizeni nasezinsizakalweni (kanye nanoma yiziphi izintela, futhi kususwe noma yiziphi izinsiza, emikhiqizweni engafakiwe kunani lemikhiqizo yazo)". Incwadi ye-IMF ithi, "i-GDP ilinganisa inani lemali lezimpahla nezinkonzo zokugcina <unk>ezithengwa ngumsebenzisi wokugcina <unk>ezikhiqizwa ezweni esikhathini esithile (ngokuthi ikota noma unyaka)".  I-GDP ivame ukusetshenziswa njengendlela yokulinganisa ukuqhathanisa kwamazwe omhlaba kanye nesilinganiso esibanzi sentuthuko yezomnotho. Ngokuvamile kubhekwa njengesibonakaliso sezibalo esinamandla kunazo zonke emhlabeni sokuthuthuka nokuqhubekela phambili kwezwe. Kodwa-ke, abagxeki benqubo yokukhula bavame ukuthi izilinganiso ze-GDP azikaze zenzelwe ukukala inqubekela phambili, futhi zishiya ngaphandle ezinye izinto ezibalulekile zangaphandle, njengokukhishwa kwemithombo, umthelela emvelweni kanye nomsebenzi wasendlini ongakhokhelwa. Abagxeki bavame ukusikisela ezinye izindlela zezomnotho ezifana ne-donut economics esebenzisa ezinye izindlela zokulinganisa impumelelo noma ezinye izinkomba ezifana ne-OECD's Better Life Index njengendlela engcono yokulinganisa umthelela wezomnotho ekuthuthukisweni kwabantu nenhlalakahle.
Umkhiqizo Womhlaba Wonke (i-GDP) uwukukala kwazo zonke izimpahla nezinsizakalo ezithengiswa ezweni elithile esikhathini esithile. Isetshenziswa njengendlela yokulinganisa impilo yezomnotho, intuthuko yezomnotho, nokuqhathaniswa kwamazwe ngamazwe. I-GDP ayisetshenziselwa ukukala umehluko wezindleko zokuphila kanye namazinga okwenyuka kwamandla emali phakathi kwamazwe.