[Spunky]

Jeff I don't who calculated those figures but I always keep my old tax books so I can look back to see what taxes were for each year. Those in your chart are not correct. Also the chart says "Making" I presume it means after taking deductions then paying taxes on the balance.

Here is what the actual 2007 book says were taxes based on the balance after deductions.
Single making 30K - tax $4,500 for 2007 was $4,113
Single making 50K - tax $12,500 for 2007 was $8,930
Single making 75K - tax $18,750 for 2007 was $15,180
Married making 60K - tax $9,000 for 2007 was $11,430
Married making 75K - tax $18,750 for 2007 was $11,604
Married making 125K - tax $31,250
My tax book 1040 A doesn't go up to 125K but for $100,00 in 2007 it was $17,841.

[Jeff Head]

It was supposed to be based on 2007 Shcedules before deductions, meaning that was your adjusted income. I am updating the numbers based on the Official IRS web site 2007 Schedules;

http://www.irs.gov/formspubs/article/0,,id=164272,00.html

Singel:
30K - $4,109
50K - $8,924
75K - $15,174

Married:
60K - $8,217
75K - $11,597
125K- $24,097