A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Asset Allocation Consider how your assets are allocated and if that allocation is consistent with your time frame and risk tolerance. Lifetime of Earnings Estimate how much you have the potential to earn during your working years. What's So Great About a Rollover? Making a career move requires tough decisions, not the least of which is what to do with the funds in your retirement plan.