Elizabub

I want to submit a Form 17 to request rental income to be taxed on unequal shares between me and my husband, and will be submitting a Deed of Assignment as evidence to support this. The form instructions says it must be received within 60 days of us signing the declaration - does this mean within 60 days of signing the Form 17 declaration, or within 60 days of signing the Deed of Assignment which is being used as supporting evidence?