正解。的确是不可以的。政府很聪明啊。Income Threshold for Spouse/Siblings To claim tax relief for cash top-ups for your spouse or siblings, the spouse or siblings must not have an annual income exceeding $4,000 in the year preceding the year of top-up. Annual income includes taxable income (e.g. trade, employment and rental), tax exempt income (e.g. bank interest, dividends and pension) and foreign-sourced income regardless of whether it has been remitted to Singapore. This income threshold does not apply to parents, grandparents, handicapped* spouse or handicapped* siblings.