1. File on time even if you can’t pay.
If you complete your tax return but can’t pay the taxes you owe, do not request an extension. Instead, file your return on time and pay as much as you can. You can also file Form 9465, Installment Agreement Request, with your tax return. If you are unable to make payments because of a financial hardship, the IRS will work with you.
2. Extra time to file is not extra time to pay.
An extension to file will give you six more months to file your taxes, until Oct. 15. It does not give you extra time to pay your taxes. You still must estimate and pay
what you owe by April 15. You will be charged interest on any amount not paid by the deadline. You may also owe a penalty for not paying on time.