Rhaid i fondiau – fel mathau eraill o fenthyca – gael eu had-dalu a bydd hyn yn effeithio ar faint o refeniw a fydd gan Lywodraeth Cymru i ariannu gwasanaethau o ddydd i ddydd.
Bonds – in common with other forms of borrowing – must be repaid and will have an impact on the amount of revenue the Welsh Government has to fund day-to-day services.