The RV thresholds are also more generous for post offices, which receive 100% relief up to a rateable value of £9,000 and 50% relief for rateable values from £9,001 to £12,000.
Mae trothwyon gwerth ardrethol hefyd yn fwy hael i swyddfeydd post, sy'n cael rhyddhad o 100% hyd at werth ardrethol o £9,000 a rhyddhad o 50% ar gyfer gwerthoedd ardrethol rhwng £9,001 a £12,000.