The　effect　of　glacial　isostatic　adjustment　(GIA)　on　the　shape　and　gravity　of　the　Earth　is　usually　described　by　numerical　models　that　solve　for　both　glacial　evolution　and　Earth＇s　rheology,　being　mainly　constrained　by　the　geological　evidence　of　local　ice　extent　and　globally　distributed　sea　level　data,　as　well　as　by　geodetic　observations　of　Earth＇s　rotation.　In　recent　years,　GPS　and　GRACE　observations　have　often　been　used　to　improve　those　models,　especially　in　the　context　of　regional　studies.　However,　consistency　issues　between　different　regional　models　limit　their　ability　to　answer　questions　from　global-scale　geodesy.　Examples　are　the　closure　of　the　sea　level　budget,　the　explanation　of　observed　changes　in　Earth＇s　rotation,　and　the　determination　of　the　origin　of　the　Earth＇s　reference　frame.　Here,　we　present　a　global　empirical　model　of　present-day　GIA,　solely　based　on　GRACE　data　and　on　geoid　fingerprints　of　mass　redistribution.　We　will　show　how　the　use　of　observations　from　a　single　space-borne　platform,　together　with　GIA　fingerprints　based　on　different　viscosity　profiles,　allows　us　to　tackle　the　questions　from　globalscale　geodesy　mentioned　above.　We　find　that,　in　the　GRACE　era　(2003-2016),　freshwater　exchange　between　land　and　oceans　has　caused　global　mean　sea　level　to　rise　by　1.2　+/-　0.2　mm　yr(-1),　the　geocentre　to　move　by　0.4　+/-　0.1　mm　yr(-1),　and　the　Earth＇s　dynamic　oblateness　(J(2))　to　increase　by　6.0　+/-　0.4　x　10(-11)　yr(-1).