Yes, you can enter your payment amount (all inclusive) and leave the rest blank. The Form 4868 is requesting an extension of time to file and should be approved with your payment. You do want approval for your extension so I would at least enter the same amount as the tentative balance due. When you complete your tax return you will apply any excess payments to your 2023 estimated tax as indicated by Mike9241.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
