If you make tax rates too high compliance plummets. Yes tax rates should go back to Clinton levels, however, it would be best to institute a flat-like tax. In Singapore for instance, it takes the average citizen less than 10 minutes to complete their annual tax forms. The tax rates are (in Singaporean $ which 1 S$ = US$ .81 :
First $20,000 0%
Next $10,000 3.50%
Next $10,000 5.50%
Next $40,000 8.50%
Next $80,000 14%
Next $160,000 17%
Above $320,000 20%
This would translate into these tax bills:
$30,000 - 350
$40,000 - 900
$80,000 - 4,300
$160,000 - 15,500
$320,000 - 42,700
There are no capital gains taxes, and no taxation on investment / interest income. Additionally, there are virtually no deductions except for charitable donations (which give $2.50 in deductions for every $1 given) and family hardships (ie... caregiver status, disabled parent, etc..) Additionally, a one time payment is made for people with children (1st child = $5,000, 2nd child = $10,000, 3rd & more = $20,000).
For corporations it is a flat 17% tax on income over S$300,000. (For corporations with under S$300,000 it pays 8.36%)
Having low taxes, yet very little deductions and tax shelters, means higher compliance, as simply paying a max rate of 20% on income is better than risking jail time, and added attorney costs in avoiding said taxation. The US tax code is such a disaster that it means tens of millions of Americans need accountants and lawyers to guide them in just filling out the forms, and maximizing deductions of all kinds.