That's your own funding cost; It's not quoted to you. BUT: since you are always borrowing at a rate that's above the yield curve (sometimes by a whole lot), it's basically impossible for you to do an arb (since you can never borrow at the yield curve rate, since that's what the government borrows at; the bank themselves borrow at a higher rate)
Quote from bwolinsky:
The part of the covered interest rate parity isn't just the forward price, but the rate, that allows arbitrage. I need to know what rate I'd get for lending and what rate I'd get for borrowing.
