Assuming you don't have a 0% APR, you can do it now. If you don't have a 0% APR, you'd have to wait till it expires.
Arrival+ | Barclaycard Rewards Mastercard | Citi Double Cash | CapOne QS (2) | Citi Diamond P | Freedom | Fidelity Amex | Amex Plat | Old Blue Cash | PRG | SPG | BCP | HHonors Surpass | Cap1 Venture | Discover | CSP | Cap1 Venture1 | BOA CR&TR (2) | Ritz Carlton | Southwest Rapid Rewards | Hyatt (2) | US Airways Mastercard (2) | Wells Fargo Rewards Visa | Marriott Premier (2) |
Fico Scores as of 2/21/15 - EX: total crap, TU: total crap, EQ: total crap