Does everyone have the same tax filing due date?

No, in fact, the Tax Filing Due Date can vary.

Your tax return “reconciles” what the correct amount of tax should have been for the calendar year—January to December. It then establishes whether you will receive a refund (if you overpaid your taxes), or if you must pay a balance due. For most people that balance due date is April 30. However, if you are a proprietor—the owner of an unincorporated small business—you and your spouse have until June 15 to file without incurring late filing penalties. But be aware that you’ll pay interest on your balance due, as if your filing deadline was April 30, so it always pays to file by then if you are self-employed.