The philosophy of Tantra is based on any collection of the 92 Śrutis, the Tantras. Tantra exists in Vaisnava, Shaiva, Ganapatya, and Shakta forms, amongst others.

The Tantric tradition, or Tantrika Parampara, may be considered as either parallel to, or intertwined with, the Vedic tradition (Vaidika Parampara). Swami Nikhilananda wrote not only of the close affinity with the Vedas, but also that the development of Tantric thought shows the influence of the Upanishads, the Puranas and Yoga.

Reality as Shiva-Shakti

According to Tantra, Reality is pure consciousness (chit), which is considered to be identical with both being (sat) and bliss (ananda). In Tantra, this being-consciousness-bliss or Satchidananda is enshrined as ShivaShakti, a conjoined term conveying the inseparable nature of Shiva (the Absolute) and Shakti (the power of creation). In Tantra, any conception of the Divine which does not include Shakti, or the power to become, is considered to be incomplete.