https://ttlc.intuit.com/ What happens if you can't pay your taxes by the tax deadline? If you are unable to pay your taxes by April 17th, don’t worry, you have a couple options. Even if you can’t pay all of you taxes you should file them or file an extension by April 17th to avoid a late filing penalty. If possible pay as much as you can by the deadline. That’ll help reduce any penalties and interest. For more helpful information on paying taxes, watch this helpful video guide from TurboTax Support. For more answers to your questions visit turbotax.com/support.