If in doubt, use Form 1040, it works for everyone.
Some people can use the shorter forms 1040A or 1040EZ.
Here are tips on how to choose the right form from the IRS:
http://ftp.irs.gov/newsroom/article/0,,id=105099,00.html
The only real difference between the forms is that the short forms leave out a lot of the lines that don't apply to most people with simple taxes. Some people get confused by the fact that there are a lot of lines they will be skipping on the long Form 1040 because they don't apply to them.
You can find the tax form 1040 online at www.irs.gov. The IRS site is the best one to go to because it will allow you to pick the year that you filing for and then you can download the correct form.
IRS Form W4.
It depends on the legislation of your country.
When the IRS assigns a tax number, it sends out a form with that number on it. If you cannot find your form, contact the IRS by phone and their agents will assist you.
From the questions marked 'Income'.
Line 44 on the IRS form 1040 is the amount of tax that is owed. You must use the tax computation worksheet to determine this amount.
Since you didn't specify the tax, I'll give an example. Let's say the tax is 6.25%. The decimal form would be 6.25/100 = 0.0625. To determine the amount of tax, multiply $1349.99 by the tax in decimal form.$1349.99 x 0.0625 = $84.37To determine $1349.99 plus tax, add the tax to $1349.99.$1349.99 + $84.37 = $1434.36You can do this all in one step.1349.99 + (1349.99 x 0.0625) = $1434.36Now you answer the question by substituting the amount of tax you were given for the question.
The W-4 form is used to determine how much money should be taken out of your paycheck for tax purposes. You may get most or all of this money back when you file your tax returns.
One can find more information about the tax form TD1 at the IRS websites which contain tax forms pertaining to various natures of tax and revenue particularly the tax form TD1.
The 1040 EZ form is the most often used form. If your tax situation is simple this would be the form you would want to use. Consulting with the IRS directly can help determine what form you will need to use. You can also check with a professional tax representitive to help you with that.
I what country are you referring to as I am sure all countries will have different tests to determine residency for tax purposes....?
There are several online sources that show the proper tax forms to file taxes. Also contacting a local tax professional is a good source to find the correct tax form.