Even if you have signed as an owner-builder on the building permit: 1  you and a builder, contractor or tradesperson must enter into a written contract for domestic building work costing more than $5,000.
1 The parent who the child spends the most time with may claim the dependent. 2  If the child spends equal time between both parents, then the parent with the highest adjusted gross income may claim the dependent. 3  If only one of the taxpayers is the childâs parent, that parent may claim the dependent.
After you and your brothers agree that you can claim Mom as a dependent this tax year, file Form 2120, Multiple Support Declaration, with your tax return. This form indicates that while several siblings contributed to Mom's support, the others waive any tax-exemption claim.