Are there any penalties for late payment?
If your organization owes money to the IRS, you must pay the amount by the original deadline. IRS Form 8868 only extends time to file, not time to pay. You can incur IRS penalties for paying late.
How can I check the status of my extension?
Why should I provide information for signing authority?
How much do you charge to e-file 8868?
When is the due date for Form 8868?
Does Form 8868 extend time to pay tax?