I'm filing my taxes late, as a small business owner I have till the end of June to file. I made an estimated payment in April 2018. Where do I enter this amount?

[rolandpenner]

I've finished going through my tax return and wish to finish now, but its saying I'm owing the full amount, but I've paid 75% of this amount at the end of April to avoid penalties.

[TurboTaxMary-Ann1 · Accepted solution]

You would enter this payment as a tax installment.  When using TurboTax Standard Online, click on Find in the top right-hand corner and type in Tax Installment payments and click on Go.  You will then be prompted to enter the amount.