Minimum Project Size Calculator
A minimum project size calculator answers the question most freelancers never calculate directly: what is the smallest project that's actually worth taking? Enter what your business costs to run each month, the income you need to pull from it, and the hours you can realistically bill. The calculator returns the floor: the minimum project fee below which the work costs you more than it earns.
Minimum Project Size Calculator
The smallest project fee below which the work costs you more than it earns.
Minimum project fee
$945
The floor for a 15-hour project at your numbers.
Effective hourly rate
$63/ hour
What each delivered hour must earn to cover all costs and your income.
Minimum day rate
$300/ day
Based on 21 working days per month.
Breakdown
- Monthly costs
- $800
- + Income target
- $5,500
- = Total monthly need
- $6,300
- ÷ Billable hours
- 100 hrs
- = Effective rate
- $63/hr
- × Project hours (incl. admin)
- 15 hrs
- = Minimum fee
- $945
The floor only means something if you log what projects actually take.
Ascend attaches a timer to every task and logs hours automatically, so by the time a project closes you have the real number — not a guess. Free plan included.
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How to read your result
The output is a single number: the minimum fee. Every project you quote should land above it. If your quote is below the floor, you're not recovering your operating costs plus your own income — the project costs you money in the precise sense that you could have spent those hours on something that would have paid.
The secondary output — minimum day rate — gives you a reference point for day-rate conversations and helps sense-check the main figure. If your minimum day rate looks high, the input to adjust is billable hours or monthly costs.
How the minimum project fee is calculated
Three steps. Cost to serve — add your monthly costs and your income target to get your total monthly need. Effective rate — divide by your realistic billable hours, giving you what each delivered hour must earn. Minimum fee — multiply by the total project hours including admin overhead.
The step most people skip is admin overhead. Even a straightforward project carries two to four hours of scoping, emails, invoicing, and onboarding. Leave those out and the floor is understated every time. If you're not sure how to set your hourly rate, the agency hourly rate calculator starts there.
A worked example
A freelance web developer has:
- Monthly costs: $800 (software, tools, accounting)
- Income target: $5,500 per month
- Billable hours available: 100
- Estimated project delivery hours: 12
- Admin overhead: 3 hours
Total monthly need: $800 + $5,500 = $6,300. Effective hourly rate: $6,300 ÷ 100 = $63/hour. Total project hours: 12 + 3 = 15. Minimum project fee: 15 × $63 = $945.
The developer had been quoting a flat $750 for "small sites." Every one of those projects returned $195 less than break-even. The fix is not to charge more per hour — it's to know the floor and stop quoting below it.
Why minimum project size matters more than hourly rate
Freelancers spend a lot of time asking "am I charging enough per hour?" and almost no time asking "is this project worth the slot it occupies?" A one-hour-per-week retainer at a high rate might not cover the context-switching and account management it requires. A three-day project at a lower rate might be fine. The minimum project size is the lens that evaluates whether a given engagement is worth the slot, not just the rate.
Not sure whether you're undercharging in the first place? The pricing confidence quiz diagnoses the behavioural signals before you touch the numbers.
Frequently asked questions
What is a minimum project size for a freelancer?+
The minimum project size is the smallest fee below which a project fails to cover your business costs plus your own income, accounting for the full hours — delivery and admin overhead — the project requires. It's calculated from your total monthly need divided by your available billable hours, multiplied by project hours.
How do I calculate my minimum project fee?+
Divide your monthly costs plus income target by your realistic billable hours. That's your effective hourly rate. Multiply by the total hours the project requires, including admin overhead. The result is your floor — quote below it and you're working at a loss.
What should I include in my monthly business costs?+
Software subscriptions, professional insurance, accounting and bookkeeping, equipment amortisation, any retainer contractors, and platform fees. Do not include your own income or personal living costs — those go in the income target field separately.
Why does admin overhead matter for the minimum fee?+
Because every project consumes more of your time than the delivery hours alone. Two to four hours of scoping, back-and-forth, invoicing, and client setup come with even a simple project. Leave them out and your minimum fee is understated — you're subsidising the admin time on every engagement.
How many billable hours should I use in the calculation?+
Be conservative. Most solo operators deliver 80–120 billable hours per month after you account for admin, business development, and non-client work. Using 160 (a theoretical full-time equivalent) will understate your floor and lead to under-quoting.
What's the difference between minimum project size and hourly rate?+
Hourly rate is what you charge per unit of time. Minimum project size is the smallest total engagement worth taking, accounting for the full slot a project occupies — delivery hours, admin, context-switching, and opportunity cost. A project can look fine at your hourly rate but still be below the floor if it's smaller than it's worth managing.
Should I ever go below my minimum project size?+
Occasionally — for a client with strong long-term potential, or for a new service line you're building experience in. But treat those as deliberate exceptions, not a standard. Know the floor first, then decide whether to cross it.
Track hours per project so the floor means something.
Ascend attaches a timer to every task and logs hours automatically, so by the time a project closes you have the real number — not a guess. The free tier covers one client end to end.
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