Monthly E-commerce Operating Cost Calculator
Track and forecast all recurring operational expenditures for an active e-commerce store, from advertising and SaaS apps to warehouse storage and packaging.
E-commerce Operating Cost Formula
Total OPEX = Platform & Software + Ad Spend + Fulfillment & Storage + Payment Fees + Support Staff + Packaging & Overhead- Fixed Technology: Platform subscription, email marketing software, review apps, and security tools.
- Marketing Spend: Paid customer acquisition budget across Meta, Google Ads, TikTok, and influencer sponsorships.
- Fulfillment & Storage: 3PL storage pallet fees, pick and pack labor, and shipping supplies.
- Operating Ratio: Operating expenses as a percentage of monthly gross revenue.
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Operating costs exclude cost of goods sold (COGS) to isolate merchant overhead efficiency.
- All figures represent monthly recurring cash outflows.
Frequently Asked Questions
What is a healthy operating cost ratio for an e-commerce brand?
Excluding product manufacturing costs (COGS), healthy e-commerce brands typically operate with OPEX between 20% and 35% of revenue, leaving 15% to 30% for net pre-tax profit.
What is typically the largest operating expense for an online store?
For direct-to-consumer (D2C) brands, customer acquisition advertising (Meta and Google ads) is almost always the single largest operating expense, frequently accounting for 30% to 50% of total OPEX.
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