Internal revenue code section
- Internal revenue code section 501(c)(3)
- Internal revenue code section 197
- Internal revenue code section 6695 penalties
- Internal revenue code section 41
- Internal revenue code section 3509
- Internal revenue code section 6601
- Internal revenue code section 7525
- Internal revenue code section 1441
- Internal revenue code section 501 c )( 3
- Internal revenue code section 6651
- Internal revenue code section 1031
- Internal revenue code section 409a
- Internal revenue code section 42
- Internal revenue code section 162
- Internal revenue code section 179