My investment accounts don't withhold taxes from my capital gains, which is causing me to owe large amounts when I file my returns. How can I mitigate this situation? -David As capital gains distributions are unpredictable and usually unknown until the end of the year, it can be difficult to properly plan for them. Taking proactive steps to anticipate and "prepay" your tax bill can help you avoid an unmanageable balance due in April. Read on for more information on how to manage your tax...