The Internal Revenue Service is reminding taxpayers that the April 15 filing deadline is just days away and is encouraging anyone who still needs to file to take advantage of free tools and resources available at IRS.gov.

According to the IRS, taxpayers can use the website to check refund status, get tax preparation help, research tax law changes, and find answers to common filing questions. IRS Free File is also still available for qualified taxpayers who need to submit their returns at no cost.

The agency says taxpayers who cannot file by April 15 should request an extension by that date to avoid a failure-to-file penalty. An approved extension gives filers until Oct. 15 to submit their return, but any taxes owed are still due by April 15. The IRS stressed that an extension to file is not an extension to pay.

The IRS also noted that some taxpayers may qualify for automatic extensions, including certain Americans living abroad, military members serving outside the United States and Puerto Rico, and taxpayers in federally declared disaster areas.

For those who owe taxes and cannot pay in full, the IRS says payment plans may be available, including short-term and long-term installment agreements. Officials are urging taxpayers to file on time and pay as much as they can to reduce interest and penalties.

The IRS says additional filing help, payment options, and answers to frequently asked questions are available through the “Let Us Help You” section of IRS.gov.