At the heart of Smarta belief is a reading of Vedanta often called Advaita — a nondual metaphysical position that identifies the individual self (ātman) with the ultimate reality (Brahman). Adherents hold that Brahman is the sole, unchanging substratum of existence and that empirical plurality is a play of māyā (illusion or tentative appearance). From the Smarta vantage this is not merely abstruse metaphysics: it forms the interpretive key through which temple images, sacred stories and the many gods of the Hindu pantheon are understood. The basic locus classicus for these ideas is the Upanishadic corpus; commentators central to the tradition include the early Mandukya Kārikā and the major bhāṣyas attributed to the figure known as Adi Shankara.
The Smarta worldview has several interlocking components. One is ontology: the claim that Brahman alone is ultimately real while the world of names and forms is relatively real and transient. A second is anthropology and soteriology: the human predicament is ignorance (avidyā) of one's true identity with Brahman; liberation (mokṣa) is the direct, liberating knowledge (jñāna) by which ignorance is dispelled. A third is praxis: although liberation is primarily realized through knowledge, Smartas allow for ritual, devotion and ethical living as preparatory or supportive means. Thus Smarta theology accommodates both jñāna-yoga (the path of knowledge) and worship-based practices.
A distinctive Smarta feature is theological inclusivism. Where some Hindu traditions privilege a single deity (e.g., the Vaishnava focus on Viṣṇu or the Śaiva focus on Śiva), the Smarta schema intentionally preserves a plurality of devotional forms under an interpretive umbrella. A concrete institutional expression of this is panchayatana puja — the canonical grouping, in many Smarta households and temples, of five deities (commonly Śiva, Viṣṇu, Devī, Sūrya and Gaṇeśa). Adherents interpret these deities as distinct personal forms yet as ultimately non-different from Brahman. This theological stance creates a tension — and a comparative point — with theistic sects that insist on a metaphysical supremacy of one personal god; Smartas instead propose that personal theisms are ways the human mind approaches an impersonal absolute.
Within this broad Advaitic frame there is important doctrinal and practical diversity. Some Smartas place stronger emphasis on classical Vedantic scriptural study, privileging Sanskrit learning and formal exegesis; others emphasize devotional practices and local temple customs, sometimes blending Smarta interpretations with regional bhakti traditions. A further internal differentiation concerns interpretation of māyā and avidyā: while classical Advaita treats these as metaphysical categories explaining empirical reality, certain modern interpreters — influenced by modern philosophy and cross-cultural exchanges — offer psychological or ethical readings of the same terms.
Scriptural authority in the Smarta world is plural: Shruti (the Vedas and Upanishads) ranks first, followed by the Brahma Sūtras as an organizing aphoristic text; Smṛti literature (laws and ritual codes), the Purāṇas and the epics (the Mahābhārata and the Rāmāyaṇa) are used for devotional, ethical and ritual instruction. The commentaries of Adi Shankara (the Brahma Sūtra Bhāṣya, the Gītā Bhāṣya, and commentaries on key Upanishads) occupy a central place: adherents tend to read the primary sources through the lens of these bhāṣyas, treating Shankara's interpretations as authoritative for Advaitic exegesis.
While nonduality is the intellectual core, Smarta ethics is practical and household-centered. The tradition affirms the cardinal duties (dharma) appropriate to one's social roles (svadharma), prescribes the life-cycle rituals (saṃskāras) that mark birth, initiation (upanayana), marriage and death, and encourages acts of hospitality, giving (dāna) and communal ritual. Ethical conduct is both instrumental (creating conducive conditions for inquiry) and constitutive (an expression of living in accord with dharma).
Smarta engagement with devotional practices produces a comparative tension with movements that emphasize a personal god as the exclusive means of liberation. Ramanuja's Viśiṣṭādvaita and Madhva's Dvaita, for instance, set up theological alternatives that stress the eternally distinct relationship between ātman and Īśvara (God). Smartas respond to these positions by interpreting devotional surrender (bhakti) as a valid and powerful means, but one that ultimately leads to the nondual realization that the devotee's true self is not other than Brahman.
Another significant comparative point concerns the place of imagery and ritual. While certain reform movements in the nineteenth and twentieth centuries — for example, the Arya Samaj — rejected image worship as non-Vedic, Smartas sustain image-based puja as an orthodox and pedagogically valuable way to approach Brahman. Smartas thus display a hermeneutical generosity: they read iconic, narrative and ritual materials in a philosophical frame that preserves both devotion and metaphysical unity.
On metaphysical technicalities, adherents and scholars sometimes disagree. The Smarta/Advaita doctrine of vivarta-vāda (apparent transformation) — the claim that the world is an apparent transformation of Brahman rather than a real ontological modification — is a classic example. Some later Vedantins and rival schools argue for pariṇāma (real transformation) or dualism; such debates are well documented in medieval Sanskrit polemical literature and remain a subject of scholarly analysis.
Finally, modernity introduces new interpretive pressures. Some contemporary Smartas read Advaita in humanist, secular or interreligious terms; others maintain traditional Sanskritic exegesis. Neo-Advaita teachers in the 20th and 21st centuries have popularized a simplified nondual message in global settings; while related to classical Advaita, such movements are distinct from the institutional and ritual Smarta tradition. Thus the Smarta worldview today is both philosophically rooted and dynamically interpretive, negotiating between ancient texts, medieval commentarial traditions and contemporary intellectual currents.