If my name is only on title for financing but my sibling paid for the rental property, who reports the rental income?

Generally, the person who actually bears the economic risk and reward of ownership - meaning who funded the purchase, pays the expenses, and keeps the profit or absorbs the loss - is who should report the rental income for tax purposes, regardless of whose name appears on title. If you're on title only for financing or legal convenience, but your sibling genuinely paid for and economically owns the property, the substance of who really owns it can matter more than the paperwork.

That said, this is a fact-specific determination, and it's an area CRA can and does scrutinize closely, particularly where title and beneficial ownership don't match. Things like who made the down payment, who pays the mortgage and other carrying costs, whose name receives the rental income in practice, and whether there's any documentation, like a trust declaration or written agreement, recording the arrangement all factor into the analysis. Because getting this wrong either way - reporting income you don't economically own, or having a sibling under-report income that's really being treated as yours - carries real risk, having the actual arrangement clearly documented in writing is genuinely worth doing before tax time rather than relying on an informal understanding.