How to use this calculator
- Enter the values from your current project or work period.
- Use realistic costs and time, including unpaid or nonbillable work.
- Select Calculate to update every result.
- Change one assumption at a time to compare scenarios.
See what a rush surcharge actually adds to your take-home planning amount. Enter the base project fee, rush premium, direct costs, estimated tax reserve rate, and total hours spent. The calculator isolates the premium dollars, subtracts costs, reserves estimated tax, and reports the effective hourly earnings. This helps distinguish an attractive headline surcharge from a genuinely worthwhile rush project.
Use the main result as a planning threshold under the assumptions entered. Secondary results explain the time, rate, revenue, or cost components behind that threshold.
Estimates are for planning only. Contract terms, local tax rules, actual expenses, and working conditions may produce different results.
A $1,200 base fee with a 30% rush premium produces a $1,560 invoice. After $100 of costs and a 25% reserve, planning net is $1,095, or $91.25 across 12 hours.
The rush premium percentage is applied to the base fee and added to the invoice.
They are removed from the rush-adjusted invoice before the tax reserve is applied.
Estimated net earnings after costs and reserve are divided by total hours worked.
No. This positive-earnings calculator blocks that input combination.
No. It is a planning reserve based on the rate you choose.
| Input | Meaning |
|---|---|
| Base project fee | Measured in $ |
| Rush premium | Measured in % |
| Direct project costs | Measured in $ |
| Estimated tax reserve rate | Measured in % |
| Total hours spent | Measured in h |