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Structured methodology As of 2026-04-24

How Consulting Day Rate Calculator works

What the tool assumes, what data it pulls from, and what it cannot tell you.

Education · General business information, not legal, tax, or financial advice. Editorial standards Sponsor disclosure Corrections

1. Scope

Derives a consulting day rate from target annual net income, utilisation, overhead, and an effective tax rate. It does not estimate market-clearing rates — benchmark against BLS OEWS medians or named-peer rate cards.

2. Inputs and outputs

Inputs

  • annual_target number (currency)

    Target annual take-home income.

  • working_days_per_year number default: 230
  • overhead_percent percent default: 20

    Overhead as a percent uplift on the target, not a currency amount.

  • tax_percent percent default: 25
  • billable_percent percent default: 70

    Utilisation — billable days are derived as working_days × billable_percent.

Outputs

  • dayRate

    adjusted_target / effective_days.

  • hourlyEquivalent

    dayRate / 8.

  • effectiveDaysPerYear

    working_days_per_year × billable_percent.

  • annualRevenue / monthlyRevenue

    dayRate × effective days, and that divided by 12.

Engine source: src/lib/consulting-day-rate-calculator/engine.ts

3. Formula / scoring logic

adjusted_target = annual_target * (1 + overhead_percent / 100) / (1 - tax_percent / 100)
effective_days  = working_days_per_year * (billable_percent / 100)
day_rate        = adjusted_target / effective_days

4. Assumptions

  • Overhead is a percentage uplift on the target, and billable days are derived from working days × billable_percent — there is no separate billable-days or overhead-dollar input.
  • Default utilisation is 70% of 230 working days (161 billable days).
  • Tax rate is a blended effective rate; actual liability depends on jurisdiction and entity type.

5. Data sources

6. Known limitations

  • Market-clearing rates can be far above or below a cost-plus day rate. Triangulate with peer rate cards.
  • Does not model retainer, value-based, or equity-swap engagements.

7. Reproducibility

Input
annual_target = $150,000, working_days_per_year = 230, overhead_percent = 20, tax_percent = 25, billable_percent = 70.

Expected output
effectiveDaysPerYear = 161, dayRate ≈ $1,490.68, hourlyEquivalent ≈ $186.34, annualRevenue ≈ $240,000.

8. Change log

  • 2026-04-24 methodology page first published.

Worked example

Run live against the same engine this site ships (/engines/consulting-day-rate-calculator.js). The inputs and outputs below are recomputed on every build and independently re-verified in CI — they are never hand-authored.

Input

tool
consulting_day_rate
annual_target
150000
working_days_per_year
230
overhead_percent
20
tax_percent
25
billable_percent
70

Output

dayRate
1490.68
hourlyEquivalent
186.34
monthlyRevenue
19999.96
annualRevenue
239999.48
effectiveDaysPerYear
161

Frequently asked questions

What does the Consulting Day Rate Calculator calculate?
Derives a consulting day rate from target annual net income, utilisation, overhead, and an effective tax rate. It does not estimate market-clearing rates — benchmark against BLS OEWS medians or named-peer rate cards.
What inputs does the Consulting Day Rate Calculator need?
It takes 5 inputs: annual_target, working_days_per_year (default 230), overhead_percent (default 20), tax_percent (default 25), billable_percent (default 70). Outputs returned: dayRate, hourlyEquivalent, effectiveDaysPerYear, annualRevenue / monthlyRevenue.
What formula does the Consulting Day Rate Calculator use?
The exact computation is: adjusted_target = annual_target * (1 + overhead_percent / 100) / (1 - tax_percent / 100); effective_days = working_days_per_year * (billable_percent / 100); day_rate = adjusted_target / effective_days
Can I verify the Consulting Day Rate Calculator with a worked example?
Yes. With annual_target = $150,000, working_days_per_year = 230, overhead_percent = 20, tax_percent = 25, billable_percent = 70. the tool returns effectiveDaysPerYear = 161, dayRate ≈ $1,490.68, hourlyEquivalent ≈ $186.34, annualRevenue ≈ $240,000.
Where does the Consulting Day Rate Calculator get its benchmark data?
Reference data is sourced from: US BLS OEWS — management analysts / consultants median hourly wage (as of 2024).
What can the Consulting Day Rate Calculator not tell me?
Known limitations: Market-clearing rates can be far above or below a cost-plus day rate. Triangulate with peer rate cards. Does not model retainer, value-based, or equity-swap engagements.