2013 Form 1040es with Instructions download and print here.

You would use this to pay tax on income not subject to withholding such as interest, dividends, rent, alimony, self employment, etc.

Below is a table with Estimated Tax due dates for the year .

In most cases you must pay estimated tax if you expect to owe, as an example, more than $1,000.00 for 2013 figure your tax using the Estimated Tax Worksheet on page 7.

Quarter	Period Covered	2013 Due Dates
1st Quarter	Jan-1 - Mar 31	Apr 15, 2013
2nd Quarter	Apr 1 - May 31	June 17, 2013
3rdQuarter	Jun 1 - Aug 31	Sep 16, 2013
4th Quarter	Sept 1 - Dec 31	Jan 15, 2014

There may be penalties for underpayment as explained in the instructions.

You must pay the Estimated Tax if you are a U.S. citizen, a resident alien, resident of Puerto Rico, the U.S. Virgin Islands, Guam, the Commonwealth of the Northern Mariana Islands, and American Samoa.

Non-resident aliens individuals use Form 1040 ES (NR) known as 1040esn

FOr the 2012 Tax year

Quarter	Period Covered	2012 Due Dates
1st Quarter	Jan-1 - Mar 31	Apr 17, 2012
2nd Quarter	Apr 1 - May 31	June 15, 2012
3rdQuarter	Jun 1 - Aug 31	Sep 15, 2012
4th Quarter	Sept 1 - Dec 31	Jan 15, 2013

For filing electronically you can go to www.IRS.gov/e-pay