Take a breath. Do what you can to complete your 2021 tax return at least to the point where you can request an extension. If you owe them money and can afford to pay them something, send that "estimate" with your 2021 return so you don't get penalized for filing 2021 lqte. You can file for the extension electronically and opt to mail a check; but, the extension has to be filed tomorrow. That will buy you some time to do 2020. Use the next few weeks to finish your 2020 return. If you have a refund, you can apply it to what you may owe for 2021. Finish both returns and then you can request a payment plan for whatever you cannot pay at once.
Just try to get the extension on 2021 done by tomorrow and save the cost of a late filing penalty. You can do this....just breathe!
