Validator Node Economics Calculator
Model whether running a validator pays: hardware and hosting against rewards, commission income from delegators, downtime penalties and the stake needed to break even.
Last reviewed by the Radiatus Cloud team
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Running a validator is a business with fixed costs
The rewards scale with the stake and the costs do not. Hardware, hosting, monitoring and the time to respond when something breaks cost roughly the same whether the validator secures the minimum or a hundred times it, which means there is a stake below which running one loses money regardless of the reward rate. Delegating to someone else's validator has no fixed cost at all, so the comparison is not against zero but against the same stake earning the same rewards minus a commission.
Commission income is the only part that scales without more capital
Attracting delegated stake earns commission on rewards you did not have to fund, which is what makes a validator a business rather than a large staking position. It also introduces a market: commission rates compete, delegators move, and a validator that raises its rate loses stake to one that has not. The break-even calculation should therefore be run at a commission rate you could sustain under competition rather than the one you would prefer.
Uptime is worth more than it looks and slashing is worth less
Missed attestations cost rewards continuously and quietly, and a validator at 95 percent uptime loses roughly five percent of its income without any dramatic event. Slashing is rarer and much larger, and the most common cause is not malice but a duplicate signer: the same key running on a backup node that was supposed to be idle. Redundancy done carelessly is the specific thing that causes the penalty it was meant to avoid.
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Frequently Asked Questions
What stake do I need to break even?
Enough that the reward rate on it covers your fixed costs. Hardware and hosting cost the same whatever the stake, so there is a floor below which running a validator loses money at any reward rate.
Should I run one or delegate?
Compare against delegating the same stake, not against zero. Delegating has no fixed cost, so running your own is worth it when your own commission income plus avoided commission exceeds your running costs.
How much does downtime cost?
Roughly in proportion. Ninety-five percent uptime loses about five percent of rewards, continuously and without any visible event, which is why it goes unnoticed for longer than slashing would.
What actually causes slashing?
Most often a duplicate signer: the same key active on a backup node that was supposed to be idle. Redundancy implemented carelessly causes the penalty it was meant to prevent.
Does a higher commission earn more?
Only until delegators leave. Commission rates compete, so run the break-even at a rate you could sustain under competition rather than the one you would prefer.
Privacy & Security
Everything runs in your browser; nothing is uploaded.
How to Use
Enter your stake and running costs to model the validator.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.