A Jain monk walks barefoot through a village, sweeping the ground before each step with a soft broom of cotton threads. Behind him, a Buddhist nun sits alone beneath a tree, her eyes half-closed, watching her breath rise and fall. Both are responding to karma. Both will tell you their tradition understands it correctly and the other does not. The disagreement is not small. It cuts to the heart of what a person is, what a soul does, and whether anyone can ever truly be free.
Karma in Buddhism and Jainism refers to two fundamentally different mechanisms: for Jains, karma is a physical substance that sticks to the soul; for Buddhists, it is a mental law of cause and effect that conditions rebirth without requiring a permanent self. The two systems share a common Indian vocabulary and a deep concern with ethical action, but they diverge on nearly everything else.
What each tradition means by “karma” (and why they are not the same word)
The Sanskrit root kṛ means “to do” or “to make,” so karma literally means “action.” Both traditions use the word. They just do not agree on what kind of thing an action is.
In Jainism, karma is matter. It is a fine, invisible substance that floods into the soul (jīva) because of the vibrations caused by every act of body, speech, and mind. The soul is naturally pure, omniscient, and blissful. Karmic particles cloud it the way dust clouds a mirror. Every action, good or bad, attracts the wrong kind of dust. Good karma brings pleasant rebirths but still binds the soul. Liberation (kevala) requires stopping all karmic inflow and then burning off what has already accumulated.
Buddhism rejects this entirely. In the Pali canon, the Buddha explicitly denied that karma is a substance. Karma is a volitional act (cetanā). What matters is the intention behind the action, not some metaphysical dust. A deed leaves no particle behind. It conditions the mind, and that conditioning shapes future circumstances through a causal chain that has no soul carrying it. The Buddha called this anattā: no self. There is no permanent soul for karma to stick to. There is only a stream of momentary mental and physical events, and karma is the law that connects them across lives.
The Jain monk sweeping the ground is trying to avoid crushing insects. He is also trying not to attract the karma of violence. The Buddhist nun is not worried about karmic dust. She is watching her intentions arise and pass, training herself to act without clinging, so that no karmic seeds are planted at all.
Where the histories split
Both traditions emerged in the same region of northeastern India, roughly between the 6th and 5th centuries BCE, as reactions against the ritualism of Vedic Brahmanism. They share a cultural context: the śramaṇa movement of wandering renunciants who rejected caste, sacrifice, and the authority of the Vedas.
Mahavira (c. 599–527 BCE), the 24th Tirthankara of Jainism, systematized doctrines that were already ancient. Jain texts claim the first Tirthankara, Rishabhanatha, lived millions of years ago. Mahavira taught that karma is real, physical, and measurable. The Tattvartha Sutra (c. 2nd–5th century CE), the most authoritative Jain text, enumerates eight types of karma, their durations, and exactly how much matter each attracts.
Siddhartha Gautama (c. 563–483 BCE), the Buddha, taught that worrying about the mechanics of karma was a distraction. When a monk named Malunkyaputta asked him whether the soul existed after death, the Buddha famously refused to answer. He compared the man to someone shot with a poisoned arrow who demanded to know the archer’s name, caste, and village before letting the arrow be removed. What matters is not the theory of karma. What matters is ending suffering.
The historical consequence: Jainism developed an elaborate, almost mathematical science of karma, while Buddhism kept the doctrine deliberately minimal and practical. A Jain can tell you exactly how many particles of jñānāvaraṇīya karma (knowledge-obscuring karma) are removed by a particular meditation. A Buddhist will tell you to stop counting and look at your mind.
What the soul does (or does not do)
This is where the two traditions truly part company.
Jainism affirms an eternal, individual soul (jīva). There are infinite souls, each one real, each one pure in its original state, each one currently covered in karmic matter. The soul does not change. It is not produced by causes. It exists independently of the body and the mind. Karma is an external layer that can be peeled away through ascetic practice. When all karma is removed, the soul rises to the top of the universe, where it remains forever in perfect, isolated knowledge.
Buddhism denies the soul entirely. The Buddha taught that what we call “self” is a bundle of five aggregates (skandhas): form, feeling, perception, mental formations, and consciousness. These aggregates arise and dissolve moment by moment. There is no owner behind them. Rebirth happens not because a soul travels from one body to another, but because the last moment of consciousness in one life conditions the first moment of consciousness in the next, like one flame lighting another.
A Jain would call this nihilism. A Buddhist would reply that the self is an illusion, and clinging to it is precisely what causes suffering.
This difference has a concrete consequence for practice. A Jain strives to protect the soul from new karmic inflow. A Buddhist strives to see through the illusion of the soul altogether.
How liberation works in each system
Jain liberation: the soul must stop accumulating new karma (saṃvara) and exhaust existing karma (nirjarā). This is done through extreme asceticism: fasting, silence, meditation, and the infamous practice of sallekhanā, a ritual fasting unto death undertaken when one senses that the body can no longer support the spiritual path. The goal is to stop all activity, because activity produces karmic vibration. Even breathing disturbs the soul. The fully liberated soul (siddha) exists in a state of perfect, motionless consciousness at the top of the universe, never to be reborn.
Buddhist liberation: the goal is nirvāṇa, the “blowing out” of the fires of greed, hatred, and delusion. This is achieved through the Eightfold Path: right view, right intention, right speech, right action, right livelihood, right effort, right mindfulness, right concentration. The Buddha explicitly rejected extreme asceticism. After six years of near-starvation, he accepted a bowl of rice milk and realized that the middle way between indulgence and self-mortification was the path. A liberated being (arhat) ceases to produce karmic seeds. At death, the five aggregates dissolve completely, and there is no further rebirth.
The practical difference: a Jain may spend years observing mahavratas (great vows) that include absolute nonviolence, truthfulness, non-stealing, celibacy, and non-possession. A Buddhist takes precepts that are less extreme — no killing, no stealing, no sexual misconduct, no lying, no intoxicants — and the emphasis is on intention, not on the physical act alone.
What happens to bad karma? Can it be undone?
A common question, and the two traditions answer it very differently.
In Jainism, karma cannot be undone through grace or forgiveness. Once a karmic particle has attached to the soul, it must bear fruit. The only way to mitigate its effect is to accelerate its fruition through austerities. A Jain who experiences suffering may actually welcome it: the karma is being exhausted. The Ācārāṅga Sūtra describes monks who deliberately endure pain to burn off karmic matter faster.
In Buddhism, karma is not a debt that must be paid. It is a seed that can be watered or left to dry. The Aṅguttara Nikāya records the Buddha saying that a person who commits a grave wrong but develops insight and compassion may experience the consequences lightly, while the same act committed by someone without those qualities may produce severe results. The mind’s present state can condition how past karma ripens. More radically, the Mahayana tradition introduced the idea of bodhicitta and the bodhisattva path, where a being can take on the suffering of others and transfer merit, a concept Jainism rejects as incoherent.
The role of vows, violence, and the everyday
A Jain layperson avoids eating after dark, because insects might fall into the food. They strain water before drinking it. Some Jains wear masks over their mouths to prevent inhaling tiny organisms. The logic is consistent: every living being, down to the one-sensed bacteria, has a soul. Killing any of them attracts karma.
A Buddhist layperson does not strain water. The Buddha explicitly permitted monks to drink unfiltered water and even to eat meat provided the animal was not killed specifically for them. What matters is intention. A farmer plowing a field will kill worms. The act produces karma, but if the intention is to grow food without malice, the karmic result is minimal.
This is not a small difference. It reflects two entirely different theories of what karma is. For Jains, karma is a physical substance attracted by the sheer fact of activity. For Buddhists, karma is a mental law triggered by volition.
FAQ
Can a Jain and a Buddhist both be right about karma? No. They contradict each other on the nature of the self, the substance of karma, and the path to liberation. One affirms what the other denies.
Which tradition is older, Jainism or Buddhism? Scholarly consensus places Mahavira and the Buddha as contemporaries, though Jain tradition claims an unbroken lineage of Tirthankaras stretching back millions of years before Mahavira.
Do Jains believe in rebirth? Yes. The soul is reborn again and again until all karma is exhausted. The cycle is known as saṃsāra, and liberation from it is the goal.
Is there any form of Buddhism that believes in a soul? Some later Buddhist schools, particularly certain strands of Mahayana and Vajrayana, developed concepts like tathāgatagarbha (Buddha-nature) that sound similar to a self. Mainstream Theravada and most Buddhist scholarship hold that these do not constitute a permanent self and that the Buddha’s anattā doctrine remains definitive.
Related guides
The debate between Buddhism and Jainism on karma is one of the oldest in Indian philosophy. To understand the broader context, explore our guide on karma and reincarnation, which traces the concept across the major traditions that shaped it. For the specific practices each tradition uses to work with karma, see Jain asceticism and the eight karmas and the Buddhist five aggregates and no-self doctrine.