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Title: zero stars would perhaps be more appropriate
Review: Why bother with this, especially since it doesn't even do the job? Filing estimated taxes is a simple matter. Download the fillable PDF (1040-ES or 1040-ESE) from irs.gov, the calculations are trivial (you can construct a simple excel sheet for them if you want to). And for electronic payment enroll in EFTPS at www.eftps.gov.
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