Can i stop filling income tax at 73if i draw ss and a small pension?

[xmasbaby0]

Maybe......but we do not know what you mean by a "small" pension.   It has nothing to do with your age.

You need to file a federal return if half your Social Security plus your other income is $25,000 when filing single or head of household, or $32,000 when filing married filing jointly, $0 if you are filing married filing separately.

Who has to file?

http://www.irs.gov/uac/Do-I-Need-to-File-a-Tax-Return%3F

[JohnB5677]

You may owe taxes on your Social Security.  

As @xmasbaby0 stated, your age has nothing to do with it.

For people who get Social Security, about 40% will pay taxes on a portion of it. 

• It is difficult to predict without preparing (not fileting) a tax return.  
• You can do this with TurboTax Online.  
• You can prepare a sample tax return, and if there is no tax due, you do not have to file it.

For more information on the subject please see:  Income Taxes and Your Social Security Benefit