Day Rate Estimator.
Independent consultants frequently underprice themselves by dividing a target annual salary by 260 working days. This ignores non-billable business development, taxes, healthcare, and bench time. This tool calculates a sustainable day rate.
The "150 Day" Rule
In a standard year, there are 260 weekdays. A full-time employee typically works 220-230 of them after holidays and PTO.
As an independent consultant, you cannot bill 220 days. You must account for business development (pitching, writing proposals), administrative tasks (invoicing, taxes), and inevitable gaps between contracts.
A highly utilized consultant bills around 150-180 days a year. If you price your rate assuming you will bill 220 days, you will take a massive pay cut compared to a salaried position.
Multilateral Caps
Be aware that organizations like the World Bank, UN, and FCDO have strict caps on daily rates based on years of experience, regardless of what your market model dictates. If your calculated rate exceeds $700-800/day, you will face significant pushback from procurement departments unless you possess a highly niche technical skill (e.g., specialized econometrics or engineering).