Further guidance on specific record-keeping requirements under the Landfill Disposals Tax and Land Transaction Tax is available under the relevant guidance sections.
Mae rhagor o ganllawiau ynghylch gofynion cadw cofnodion penodol o dan y Dreth Gwarediadau Tirlenwi a’r Dreth Trafodiadau Tir ar gael o dan yr adrannau canllawiau perthnasol.