Taxation Income tax 723 Law and legislation 157 Tax administration and procedure 122 Corporations 119 Tax returns 112 Trusts and trustees 98 more ... Business enterprises 89 Tax exemption 75 Partnership 72 Social security 63 Self-employed 59 Tax credits 57 Noncitizens 49 Employee fringe benefits 48 Nonprofit organizations 47 Social security taxes 47 Electronic filing of tax returns 44 Withholding tax 44 Small business 43 Inheritance and transfer tax 42 Pensions 37 Medicare 36 Older people 36 Gifts 34 Finance 33 Impôts 33 Income tax deductions 32 Revenue 32 States 32 less ...