What is the relationship between the NKT and Gelugpas?

We are pure Gelugpas. The name Gelugpa doesn’t matter, but we believe we are following the pure tradition of Je Tsongkhapa. We are studying and practicing Lama Tsongkhapa’s teachings and taking as our example what the ancient Kadampa lamas and Geshes did. All the books that I have written are commentaries on Lama Tsongkhapa’s teachings. We try our best to follow the example of the ancient Kadampa Tradition, and use the name Kadampa to remind people to practice purely.

Because the New Kadampa Tradition is in Western countries, most of the followers of this tradition are Westerners, so their way of studying and practicing is different. They never use the title New Kadampa Tradition at Sera, Ganden, and Drepung. Generally, the Kadampas before Lama Tsongkhapa are known as Old Kadampas, and after Lama Tsongkhapa, in books the lineages are called New Kadampa. This is because Lama Tsongkhapa had a slightly different way of presenting the Dharma. But the only title used nowadays is Gelugpa. I called our Dharma centers the New Kadampa Tradition. The source of the teachings and practices comes from Lama Tsongkhapa. We have never said that here we are pure, whereas others are not pure. The Dharma is the same. (Geshe Kelsang Gyatso, An Interview With Geshe Kelsang GyatsoTricycle: the Buddhist Review, No. 27, Spring 1998, p. 74)