Law and legislation 46 Taxation 26 Income tax 10 Tax credits 7 Disaster relief 5 Income tax deductions 5 Hurricane Katrina, 2005 4 Nonprofit organizations 4 Pension trusts 4 Renewable energy sources 4 Tax exemption 4 Energy tax credits 3 Excise tax 3 Finance 3 Highway law 3 Medical care, Cost of 3 Medical savings accounts 3 Multiemployer defined benefit pension plans 3 Pensions 3 401(k) plans 2 Budget 2 Cafeteria benefit plans 2 Corporations 2 Defined benefit pension plans 2 Defined contribution pension plans 2 Depreciation allowances 2 Econometric models 2 Employee ownership 2 Inheritance and transfer tax 2 Noncitizens 2