Calculator Inputs
Example Data Table
| Scenario | Hourly Rate | Included Hours | Buffer | Premiums | Estimated Monthly Retainer |
|---|---|---|---|---|---|
| Design support for SaaS | $85 | 18 | 15% | Value 10%, Medium | $2,100 |
| Marketing ops + reporting | $65 | 25 | 20% | Value 8%, High | $2,600 |
| Dev maintenance + small features | $95 | 30 | 10% | Value 12%, Medium | $3,800 |
These examples are illustrative. Your actual quote depends on meetings, revisions, urgency, and any fees or taxes you include.
Formula Used
1) Total included workload hours
ServiceHours = Included + Meetings + Revisions + Admin
2) Base cost
Base = HourlyRate × ServiceHours
3) Buffer, premiums, and discounts
Buffered = Base × (1 + Buffer%)
Premiumed = Buffered × (1 + ValuePremium%) × (1 + ComplexityExtra) × (1 + UrgencyExtra)
Discounted = Premiumed × (1 − Discount%) × (1 − PrepayDiscount%)
4) Minimum and rounding
Retainer = max(Discounted, MinimumRetainer)
RetainerRounded = round(Retainer to chosen increment)
5) Overage, fees, and tax
OverageRate = HourlyRate × OverageMultiplier
Subtotal = RetainerRounded + (OverageRate × ExpectedOverageHours)
PlatformFee = Subtotal × PlatformFee%
Tax = (Subtotal + PlatformFee) × Tax%
Total = Subtotal + PlatformFee + Tax
ComplexityExtra: low 0%, medium 6%, high 14%. UrgencyExtra: normal 0%, fast 10%, rush 22%.
How to Use This Calculator
- Enter your base hourly rate and select a billing cycle.
- Set included delivery hours, then add meetings, revisions, and admin time.
- Choose a buffer to cover interruptions and context switching.
- Add a value premium, then pick complexity and urgency levels.
- Apply discounts sparingly, and set minimum retainer if needed.
- Add platform fees and taxes only if they apply.
- Click calculate; review checks, tiers, and download options.
- Copy the notes line into your proposal for clarity.
FAQs
1) What is a retainer fee?
A retainer is a recurring payment that reserves your time and priority. It usually includes a set workload and clear boundaries for meetings, revisions, and turnaround.
2) Why add meeting and admin hours?
Meetings and admin work consume real capacity. Including them prevents “free” time loss and keeps delivery hours realistic. It also reduces disputes when the month gets busy.
3) What does the buffer percent do?
The buffer adds protection for interruptions, context switching, and uncertain tasks. A small buffer can underprice your availability, especially with frequent stakeholder messages.
4) When should I charge an overage rate?
Charge overage when work exceeds included hours or falls outside scope. A multiplier rewards flexibility and discourages unlimited requests. Use written approval before logging overage time.
5) How do I choose a value premium?
Use a value premium when outcomes matter more than hours, such as revenue impact, risk reduction, or senior expertise. Start modest, then adjust as you prove results and reliability.
6) Are quarterly retainers better than monthly?
Quarterly billing improves cash flow and reduces invoicing overhead. Many freelancers offer a small prepay discount for it. Monthly can feel simpler for new clients.
7) Should I include taxes inside the retainer?
It depends on your jurisdiction and invoicing style. If you must charge tax, adding it explicitly keeps your pricing transparent and compliant. Confirm rules with a professional advisor.
8) How do I set boundaries with a retainer?
Define what is included, response windows, revision limits, and how overages are approved. Add an expiration for unused hours if you prefer. Clear rules protect both sides.
Disclaimer: This tool provides planning estimates, not legal, tax, or financial advice. Confirm compliance, contract terms, and tax rules for your location and client.