No. You may pay $1,000 now, but you still have to pay the full amount or apply for installment by filling up form 9465 on or before 4/15/2021 to avoid paying penalty and interest. The IRS allows taxpayer/s to pay the tax liability up to 72 months. You may file Form 4868, Automatic extension to file US individual income tax. If you owe tax, interests continue to accrue until it's paid.
