Yn 2018-19, golygodd hyn bod tua 280,000 o aelwydydd incwm isel a rhai sy'n agored i niwed - sef un o bob pum aelwyd - wedi elwa ar ostyngiad yn eu treth gyngor. O'r rhain, amcangyfrifir nad oedd 220,000 ohonynt wedi talu unrhyw dreth gyngor o gwbl.
In 2018 to 2019, this meant that around 280,000 vulnerable and low-income households – 1 in 5 households – benefited from a reduction in their council tax. Of these, approximately 220,000 paid no council tax at all.