Startup’s Costs, Expenses and Headcount Plans
1. Assumptions
- Purpose: Centralize all unit‐cost, salary‐growth, hiring‐plan, commission‐rate, inflation and FX assumptions. 
- Key fields: - Currency, fiscal year start 
- Headcount ramp (per function) 
- Base salary by role + annual growth % 
- Commission rates by sales role 
- Customer‐ or usage‐based cost drivers (e.g. hosting $/GB, support $/ticket) 
- Inflation escalators for fixed costs 
 
2. COGS (Cost of Goods Sold)
- Purpose: Model all direct, variable costs that scale with revenue. 
- Sub-sections: - Hosting & Infrastructure: $/GB, $/hour, total hours 
- Customer Support: $/ticket or $/seat 
- Payment Fees: % of transaction volume 
 
- Logic: Link each line item to the drivers in the Revenue Drivers tab (e.g. GB = users × GB/user). 
3. Fixed & Variable Operating Costs
Split into two areas for clarity:
Fixed CostsVariable CostsOffice rentMarketing spend (% of revenue)Software licenses (yearly)Sales commissions (per sale)InsuranceTransaction feesDepreciation (from CAPEX)Customer success bonuses
- Purpose: Capture overheads that don’t move with revenue (fixed) vs. those that do (variable). 
- Linkages: Use drivers from Assumptions and Revenue Drivers to auto-scale variable lines. 
4. SG&A & R&D
- SG&A: Administrative salaries (HR, Finance), legal, travel, office OPEX. 
- R&D: Engineering salaries, contractors, prototyping, lab consumables. 
- Structure: - Line‐item budget by month/quarter 
- Tied back to headcount plan (see Tab 7) 
 
5. CAPEX (Capital Expenditures)
- Purpose: Budget outlays on long-lived assets. 
- Categories: - Infrastructure (servers, data-center build-out) 
- Equipment (desks, computers) 
- Software licenses (multi-year ERP, CAD tools) 
 
- Fields: - Purchase date, Cost, Useful life, Depreciation method → feeds into Fixed Costs tab 
 
6. Hiring Plan & Payroll
- Purpose: Model headcount growth, salary expense and hiring timing by function. 
- Columns: - Role (e.g. SDR, AE, Dev) 
- Hire month 
- Annual salary + benefits % 
- Salary ramp (prorated first month) 
 
- Outputs: - FTE count per month 
- Total payroll expense by function → feeds SG&A & R&D tabs 
 
7. Depreciation & Amortization
- Purpose: Convert your CAPEX schedule into periodic expense. 
- Fields: - Asset, cost, life (yrs), monthly depreciation 
- Total D&A per period → rolled into Fixed Costs 
 
