O 2024-25, bydd y system ardrethi annomestig hefyd yn cynnwys mesurau newydd i gefnogi talwyr ardrethi sy'n buddsoddi mewn gwelliannau i eiddo ac ynni adnewyddadwy.
From 2024-25, the non-domestic rates system will also include new measures to support ratepayers investing in property improvements and renewable energy.