Yes, you can amend your tax return for previous tax years by filing Form 1040-X. However, there are specific time limits for filing amended returns. Generally, you have three years from the date you filed your original return or within two years from the date you paid the tax, whichever is later, to file Form 1040-X for a particular tax year. It is important to review the IRS guidelines or consult with a tax professional to understand the time limits and requirements for amending tax returns for previous tax years.