🧮 Calc tab
Model what a validator earns at a given stake, commission and cost structure.
The Calc tab is a validator profit model. Enter a stake, commission and costs, and it estimates yearly net profit in SOL and US dollars. Use it to test a commission change before you make it, find your break-even stake, or size up a new validator before you run one (Figure 16.7).
Figure 16.7: Calc tab: inputs with the inflation schedule toggle, and the yearly profit result
Inputs
Start from a preset. Defaults loads a standard set of starting values. The second option, named after the validator you are viewing, loads its real numbers. Then adjust any field:
- Active stake (SOL) and commission (%).
- Inflation schedule: today's inflation rate, with a choice between the current schedule (15% disinflation per year) and SIMD-0550 (30% per year). The app shows the average rate for the next three years. Profit uses the first year.
- Block rewards per block and MEV tips per block (SOL), and your MEV commission (%).
- Leader slots per epoch: worked out from your stake.
- Vote cost per epoch (SOL) and server cost per month (USD).
- SOL price (USD).
The result
Yearly shows your SOL net profit per year and its value in US dollars, broken down into:
- Revenue: commission from inflation rewards, block rewards and MEV.
- Costs: voting and server costs.
The result assumes a slot time, which the app shows under the result.
The Calc tab is a projection from the numbers you enter, not a promise of future earnings. Inflation, fees, MEV, SOL price and your stake all change over time.