Online Store Cost Calculator
Calculate the total cost to launch and run an online retail store, combining platform subscriptions, domain, theme, merchant processing fees, and maintenance.
Online Store Total Cost Formula
First Year Cost = One-Time Setup + [Monthly Fixed Software × 12] + [Annual Gross Sales × Processing Rate + (Orders × Flat Fee)] + Maintenance- One-Time Setup: Premium responsive store theme, custom domain name, and initial configuration.
- Monthly Fixed Software: Core platform subscription (e.g. Shopify, BigCommerce, WooCommerce hosting) and third-party merchant apps.
- Payment Processing Fees: Standard credit card interchange (typically 2.9% + $0.30 per transaction in the United States).
- Annual Maintenance: Security patches, backup automation, and technical retainer fees.
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Standard merchant gateway rates assume domestic consumer credit cards (2.9% + $0.30).
- Excludes physical product inventory manufacturing costs and carrier shipping postage.
Frequently Asked Questions
What is the cheapest platform to build an online store?
Self-hosted WooCommerce on shared hosting can start around $5 to $15 per month, but requires manual updates and security upkeep. Hosted solutions like Shopify Basic start at $39/month with automated hosting, SSL, and PCI compliance included.
Do credit card fees decrease as order volume grows?
Yes. Upgraded plans (such as Shopify Advanced or custom merchant account merchant accounts) typically lower the variable credit card rate from 2.9% down to 2.4% - 2.15% plus $0.30.
Related Cost Calculators
E-commerce Startup Cost Calculator
Calculate the total initial capital required to launch an e-commerce business, including website development, initial inventory, LLC formation, and 3 months of operating reserves.
E-commerce Platform Cost Calculator
Compare the true cost of e-commerce platforms like Shopify, BigCommerce, or WooCommerce by factoring subscriptions, external transaction fees, and payment gateway rates.
Payment Processing Fee Calculator
Calculate merchant account credit card processing fees, flat transaction charges, net bank deposits, and effective fee percentages for single or batch sales.