After approval of withdrawal from benefits and i cancel in60 days, am i able to start back benefits? Or wait longer & reapply?

Hi. If you withdraw an application and then cancel the withdrawal within 60 days, it nullifies the withdrawal request. You would then resume your benefits based on the date you chose to start them on your original application. That would include being paid any back pay that you have coming.

But, if you withdraw an application and if you don't cancel the withdrawal request, you'd need to file a new application in order to claim benefits. Your choices with regard to when you could then start your benefits would be limited based on the filing date of your new application. How many months of retroactive benefits, if any, that you might be able to claim based on your new application depends on your age and the type of application involved (https://secure.ssa.gov/apps10/poms.nsf/lnx/0200204030). For example, retroactivity on an application for retirement benefits is limited to no more than 6 months, and no retroactive benefits can be paid if you're applying for benefits that are reduced for age (i.e. filed prior to a person's full retirement age).

Best, Jerry