You do not have to wait until March!
You can get Form 4868 in fillable PDF form at www.irs.gov under "forms".
The 2020 version should be online soon after the new year.
You don’t need to file Form 4868 if you make a payment using the IRS electronic payment options. Your extension will be automatically processed when you pay part or all of your estimated income tax electronically. You can pay online or by phone.
Indicate that the payment is for an extension.
Also after the new year.
