You will owe taxes on any distributions and dividends in the year you receive them (or reinvest them). You will also owe taxes on any capital gains you receive when you sell your shares. Keep your account statements in order to figure out your taxes at the end of the year.

If you invest in a tax-exempt fund (such as a municipal bond fund), some or all of your dividends will be exempt from federal (and sometimes state and local) income tax. You will, however, owe taxes on any capital gains.

Be sure to consult with a tax professional for specific questions about taxes on money earned from mutual funds.