This app is very frustrating and I would not recommend it. It will not send codes to your email, which is required to access past tax returns if you filed previously through credit karma. When you finally recieve the proper codes, the app will produce an error code stating that something has went wrong and to try again later. I am in a situtaion that is time sensitive and I need to access last years tax return and I am unable. I urge you not to use this app for tax purposes