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. Related Content Consider Keeping Your Life Insurance When You Retire Reasons to retain your coverage into your retirement years. A Living Trust Primer Living trusts are popular, but their appropriateness will depend upon your individual needs and objectives. Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy.