Thank you for your question, Christine. Interest, dividends, or capital gains earned on investments in a Tax-Free Savings Account (TFSA) are typically not taxable either while held in the account or when withdrawn. There are certain circumstances under which taxes may be payable with respect to a TFSA, and these circumstances are described on the Canada Revenue Agency website.
Keep in mind that taking money out of a TFSA can affect your TFSA contribution room for the year. Here is information about TFSA basics.