Taxation 63 Tax auditing 45 Tax administration and procedure 24 Income tax 19 Employees 15 Law and legislation 15 Tax returns 15 Officials and employees 13 Personnel management 8 Automation 6 In-service training 6 Training of 6 Corporations 5 Annuities 4 Data processing 4 Electronic filing systems 4 Information storage and retrieval systems 4 Life insurance 4 Remainders (Estates) 4 Tax collection 4 Charitable uses, trusts, and foundations 3 Civil service ethics 3 Finance 3 Forecasting 3 Income tax deductions for charitable contributions 3 Premiums 3 Rates 3 Statistics 3 Study and teaching 3 Administrative remedies 2