Try this first:
The latest versions of several web browsers (e.g., Internet Explorer, Firefox, Safari) allow users to easily increase the font size for better readability. Try holding down the Ctrl key (Command key on a Macintosh) and press the + (plus) key. You can also decrease the font size by holding down the Ctrl or Command key and pressing the - (minus) key.
If that doesn't work:
You may find instructions on the Web Accessibility Initiative site to be helpful. If you are still unsuccessful, you might consider upgrading to the latest version of your browser.
The IRS is dedicated to making IRS.gov accessible for all users. We will continue to make accessibility enhancements during future site redesigns.