Memstack memstack-business-freelancer-toolkit

Use when the user says 'track my time', 'freelancer invoice', 'billable hours', 'time tracking', 'freelance finances', 'client billing', 'project hours', or needs invoicing, time tracking, or analytics patterns for freelance work. Do NOT use for general invoice templates or proposal writing.

install
source · Clone the upstream repo
git clone https://github.com/cwinvestments/memstack
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/cwinvestments/memstack "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/business/freelancer-toolkit" ~/.claude/skills/cwinvestments-memstack-memstack-business-freelancer-toolkit && rm -rf "$T"
manifest: skills/business/freelancer-toolkit/SKILL.md
source content

Freelancer Toolkit — Setting up freelancer workflows...

Produces time tracking sheets, invoice calculations, and project analytics for freelancers managing multiple clients.

Activation

TriggerStatus
User says "track my time" or "billable hours"ACTIVE
User says "freelancer invoice" or "client billing"ACTIVE
User says "freelance finances" or "project hours"ACTIVE
User wants a formal proposal or SOWNOT this skill — use Proposal Writer or Scope of Work
User wants a generic invoice templateNOT this skill — use Invoice Generator

Context Guard

  • Do NOT use for proposal writing (that's proposal-writer)
  • Do NOT use for scope of work documents (that's scope-of-work)
  • Do NOT use for generic invoice templates (that's invoice-generator)
  • This skill covers the full freelancer workflow: tracking time → calculating billable → generating invoice → analyzing profitability

Steps

Step 1: Gather freelancer context

ParameterDefaultExample
Hourly rateAsk$150/hr, $85/hr
CurrencyUSDEUR, GBP, AUD
Billing cycleMonthlyWeekly, per-project
ClientsAskAcme Corp, StartupX
Tax rate0% (user adds)20% VAT, 25% self-employment

Step 2: Time tracking sheet

Create or update a tracking spreadsheet (CSV or markdown):

# Time Log — [Month Year]

## [Client Name]

| Date | Project | Task | Hours | Billable | Notes |
|------|---------|------|-------|----------|-------|
| 2026-04-01 | Website Redesign | Homepage wireframes | 3.5 | Yes | Completed v1 |
| 2026-04-01 | Website Redesign | Client feedback call | 0.5 | Yes | Revision notes |
| 2026-04-02 | API Integration | Auth endpoint | 4.0 | Yes | |
| 2026-04-02 | Internal | Admin/invoicing | 1.0 | No | Non-billable |

**Subtotal:** 8.0 billable hours / 9.0 total hours

Time tracking rules:

  1. Log daily — reconstructing from memory loses hours
  2. Separate billable from non-billable (admin, learning, invoicing)
  3. Round to nearest 15 minutes (0.25 hr increments)
  4. Include project and task for accurate per-project reporting
  5. Notes field captures context for invoice line items

Step 3: Invoice calculation

Compute totals from the time log:

# Invoice Calculation — [Client Name] — [Period]

| Project | Hours | Rate | Subtotal |
|---------|-------|------|----------|
| Website Redesign | 24.5 | $150 | $3,675.00 |
| API Integration | 16.0 | $150 | $2,400.00 |

| | |
|---|---|
| Subtotal | $6,075.00 |
| Tax ([rate]%) | $[amount] |
| **Total Due** | **$[amount]** |
| Payment terms | Net 30 |
| Due date | [date] |

For fixed-price projects, track hours anyway for profitability analysis.

Step 4: Monthly analytics

Generate a freelancer dashboard:

# Freelance Analytics — [Month Year]

## Revenue Summary
| Client | Invoiced | Paid | Outstanding |
|--------|----------|------|-------------|
| Acme Corp | $6,075 | $6,075 | $0 |
| StartupX | $3,200 | $0 | $3,200 |
| **Total** | **$9,275** | **$6,075** | **$3,200** |

## Time Breakdown
- Total hours logged: 82.0
- Billable hours: 68.5 (83.5% utilization)
- Non-billable hours: 13.5
- Effective hourly rate: $135.40 (revenue / total hours)

## Client Concentration
- Acme Corp: 65.5% of revenue (risk: high dependency)
- StartupX: 34.5%

## Profitability by Project
| Project | Hours | Revenue | Effective Rate |
|---------|-------|---------|----------------|
| Website Redesign | 24.5 | $3,675 | $150/hr |
| API Integration | 16.0 | $2,400 | $150/hr |
| Maintenance | 28.0 | $3,200 | $114/hr |

Step 5: Alerts and recommendations

Flag issues automatically:

AlertThresholdAction
Low utilization< 70% billableReview non-billable time, reduce admin overhead
Client concentration> 50% one clientDiversify — pursue new leads
Outstanding invoices> 30 daysSend payment reminder
Effective rate below target< 80% of hourly rateReview scope creep, renegotiate
Overwork> 45 hrs/week sustainedRaise rates or reduce commitments

Step 6: File organization

Recommended folder structure:

freelance/
  clients/
    acme-corp/
      time-log-2026-04.md
      invoices/
        INV-2026-04-001.md
    startupx/
      time-log-2026-04.md
      invoices/
  analytics/
    2026-04-monthly.md
  templates/
    invoice-template.md
    time-log-template.md

Output Template

Freelancer Report — [Period]:
- Billable hours: [N] ([utilization]% utilization)
- Revenue: $[amount] ([N] invoices)
- Outstanding: $[amount]
- Effective rate: $[rate]/hr
- Alerts: [list any flags]

Files updated: [list]

Disambiguation

  • "track my time" / "billable hours" / "freelancer invoice" = Freelancer Toolkit
  • "write a proposal" / "project proposal" = Proposal Writer (not this skill)
  • "scope of work" / "SOW" = Scope of Work (not this skill)
  • "create invoice" / "invoice template" = Invoice Generator (not this skill)
  • "financial model" / "projections" = Financial Model (not this skill)

Level History

  • Lv.1 — Base: Time tracking, invoice calculation, monthly analytics, profitability analysis, alerts. (Origin: MemStack v3.5, Apr 2026)