Online Shopping Total Calculator
Calculate complete e-commerce checkout costs including merchandise subtotal, promo codes, shipping speeds, sales tax, and handling charges.
Complete E-Commerce Order Formula
Order Total = (Cart - Promo Discount) + ((Cart - Promo) × Tax %) + Shipping + Handling- Taxable Basis: Sales tax assessed on the discounted merchandise value.
- Non-Merchandise Share: Calculates what percentage of your final bill represents delivery and taxes rather than physical product.
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Assumes delivery address is within the contiguous United States.
Frequently Asked Questions
Why do online shopping carts show "estimated tax" before entering the address?
US sales tax rates depend on the exact destination ZIP code and street address (destination-based sourcing). Until you provide your full shipping address, carts use state averages.
Related Cost Calculators
Shipping Cost Calculator
Estimate package shipping costs based on parcel weight, transit distance, delivery speed (ground, 2-day, overnight), and signature options.
Free Shipping Threshold Calculator
Determine whether adding an extra item to qualify for free shipping saves money or costs you more than simply paying the standard delivery fee.
Checkout Cost Calculator
Calculate your final checkout bill including merchandise subtotal, state sales taxes, shipping, payment processing surcharges, tips, and gift card deductions.