# owner_emission (/docs/hyperparameters/owner-emission)

Slot 2 of the [emission weight vector](/docs/concepts/emission-weights):
the fraction of each block's `alpha_out` that accrues to the subnet owner and
is staked to the owner's hotkey at each epoch. Stored as `u64` parts of
`u64::MAX`; the listing shows it as a 0..1 fraction.

## How it works [#how-it-works]

Per block, `alpha_out × owner_emission` is set aside in the owner's pending
bucket; the validator and miner slots take their own shares of the same
`alpha_out`. Zero means no owner cut at all — the legacy
[`owner_cut_enabled`](/docs/hyperparameters/owner-cut-enabled) flag is now
derived from this slot. Lease-created subnets pay crowdloan contributors out
of the owner cut, so on those subnets the owner slot may not drop below the
18% launch default.

New subnets start at **0.18** (`11796/65535` scaled to u64 parts, the
historical `SubnetOwnerCut`).

## Bounds [#bounds]

`0 ≤ owner_emission ≤ 0.33`, and `≥ 0.18` on lease-created subnets. The
five slots must still sum to one, so raising the owner share lowers the
others. Errors: `OwnerEmissionAboveMaximum`,
`LeasedSubnetOwnerCutBelowMinimum`, `EmissionWeightsDoNotSumToOne`.

## Reading and setting [#reading-and-setting]

```bash
btcli subnets emission show --netuid 12
btcli subnets emission set-value --netuid 12 --slot owner --value 0.10
```

Settable by the subnet owner (once per week per subnet) or root through
[`set-subnet-emission-weights`](/docs/tx/set-subnet-emission-weights); not
available on the root subnet. `set-value` rescales the validator and miner
slots proportionally so the vector still sums to one.

## Related [#related]

* [`validator_emission`](/docs/hyperparameters/validator-emission),
  [`miner_emission`](/docs/hyperparameters/miner-emission)
* [`owner_cut_auto_lock_enabled`](/docs/hyperparameters/owner-cut-auto-lock-enabled)
  — lock the cut as it arrives
* [Emission weights](/docs/concepts/emission-weights)