Farm business income does not include other sources of household income from outside the farm business (such as other employment of the farmer or spouse outside of the farm).
Nid yw incwm busnesau ffermio yn cynnwys ffynonellau eraill o incwm aelwydydd o'r tu allan i fusnes fferm (megis cyflogaeth arall y ffermwr neu briod y ffermwr y tu allan i'r fferm).