As the basic income is classed as unearned income, the basic income payments received in those years would need to be disclosed, along with any additional earned income.
Gan fod yr incwm sylfaenol yn cael ei ystyried yn incwm a enillir, byddai angen datgelu'r taliadau incwm sylfaenol a dderbynnir yn y blynyddoedd hynny, ynghyd ag unrhyw incwm ychwanegol a enillir.