Oonagh and Donna are PAYE employees. They are in a civil partnership and are taxed under joint assessment. Oonagh's annual income is €54,000. Donna is the lower earner and has an annual income of €33,300.
Because both Oonagh and Donna are working, they are due the increased rate band. It is increased by €33,000. This is because, the lower income (€33,300) is higher than €33,000.
Oonagh and Donna's rate band is €84,000 (€51,000 + €33,000).