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About the TackOn: Cart Fees & Surcharges
TackOn lets you add cart fees, surcharges, and handling charges directly to your Shopify checkout. Set up processing fees, expedited shipping charges, rush order fees, shipping insurance, gift wrap service, tip collection, donation options, environmental fees, fragile item handling, oversized product charges, and custom service fees. Each fee can be optional with a customer toggle or required so it's automatically added to every cart. Create fixed, percentage, or combined fee types with product-specific surcharge rules and flexible conditions. The app includes multi-currency support through Shopify Markets, visibility rules, and date schedules. Customize the cart widget with your own text, colors, and CSS. Works seamlessly with slide cart, cart drawer, cart page, and all Online Store 2.0 themes.
Launched: December 11, 2025
Key features
- Add fixed, percentage, or combined fee types to any cart
- Create product-specific surcharge rules with flexible conditions
- Multi-currency support through Shopify Markets integration
- Show or hide fees with visibility rules and date schedules
- Customize the cart widget with your own text, colors and CSS
Integrations with:
- Checkout,
- Shopify Flow,
- Shopify Admin,
- UpCart
Pricing of TackOn: Cart Fees & Surcharges
Free
Free
- 20 orders a month, on your live store
- All fee types, nothing held back
- Keep 100% of what you collect
Starter
$5 / month
- All fee types(fixed, percentage, mix)
- Product-specific rules
- Slide cart extension
- Custom HTML/CSS support
- Multi-currency support
- Priority support
- Includes 50 orders/month
- Visibility control based on condition
