Analisis efektivitas restitusi pajak melalui pengembalian pendahuluan kelebihan pajak dalam upaya meningkatkan kemudahan berbisnis pada kantor pelayanan pajak wajib = Analysis of the effectiveness of tax restitution through return of tax advantages in an effort to increase business ease on large tax office 2

Efektivitas penyelesaian restitusi pajak pertambahan nilai (Studi kasus di Kantor Pelayanan Pajak Pasar Minggu)

Analisis efektifitas Sensus Pajak Nasional Tahun 2012 (Studi kasus pada Kantor Pelayanan Pajak Pratama Depok) = Analysis the effectiveness of The National Tax Census in 2012 (Case study in Depok Pratama Tax Office)

Analisis pengaruh pembentukan kantor pajak modern dan peningkatan efektivitas pemeriksaan terhadap upaya pencapaian penerimaan pajak = Analysis on the effect of establishment of modern tax office and increase in audit effectiveness on tax revenue attainment program

Analisis implementasi penagihan aktif dengan surat teguran dan surat paksa sebagai upaya pencairan tunggakan pajak: studi pada Kantor Pelayanan Pajak Penanaman Modal Asing Satu = Analysis of implementation of hard tax collection with warning letter and distress warrant as disbursement tax arrears efforts: case study one foreign capital investment tax office