The Discover it® Balance Transfer card offers an prolonged, 18-month window of zero% intro APR on steadiness transfers and 6 months interest-free funds on new purchases (then ongoing thirteen.49% - 24.forty nine% Variable APR). In that case, a deposit you have already got at the financial establishment is the collateral, and that money is frozen till the loan is repaid (or it might be incrementally thawed, because the mortgage is repaid).