File your taxes – it is the only way. It will be sent to you afterwards.
Singles
If you earned less than $3,000 – unfortunately you’d get nothing.
If you earned more than $3,000 but paid no taxes, you’d get $300.
If you earned more than $3,000 and paid taxes, you get $600.
If you have children, add $300 per.
Determine Phaseout Reduction:
The phaseout levels begin at $75k and end at $87k, at a reduction of 5% per $1,000 over the lower limit. If you earn above $87k, you’re over and thus get nothing regardless of the math.
Couples
If you earned less than $3,000 – unfortunately you’d get nothing.
If you earned more than $3,000 but paid no taxes, you’d get $600.
If you earned more than $3,000 and paid taxes, you get $1,200.
If you have children, add $300 per.
Determine Phaseout Reduction:
The phaseout levels begin at $150k and end at $174, at a reduction of 5% per $1,000 over the lower limit. If you earned above $174k, you’re over and thus get nothing regardless of the math.
http://www.bargaineering.com/articles/2008-tax-rebate-stimulus-package-explained.html