Estimates, extensions, and amendments When are items due?
Part of tax preparation and filing involves understanding when various items are due to the IRS. Complete the statements below as they apply to tax payments, extensions, and amended returns.
Some taxpayers must make four quarterly installments. These are due
If taxpayers have been granted an automatic extension, their annual federal tax return is due no later than
If a taxpayer amends a return, they submit revised calculations for determining tax liabilty. They file this return
In some cases, up to six years from when a return was filed, taxpayers can be notified that they are subject to

Quarterly ( April 15, June 15 , September 15,  January 15 )

4 months ( October 15)

Within 3 years

Tax Audit

Explanation:

Some taxpayers must make four quarterly installments. These are due Quarterly ( April 15, June 15 , September 15,  January 15 )

If taxpayers have been granted an automatic extension, their annual federal tax return is due no later than 4 months ( October 15)

If a taxpayer amends a return, they submit revised calculations for determining tax liability. They file this return Within 3 years

In some cases, up to six years from when a return was filed, taxpayers can be notified that they are subject to Tax Audit

a. $48.75

is the answer to your question