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Overview

This customization adds a clear cost breakdown above the checkout button, showing subtotal, shipping, and total based on a fixed shipping rate. It helps customers understand their final amount before checkout, improving trust and reducing hesitation. Important: This method only works with fixed shipping rates. If your store uses dynamic shipping, results may be inaccurate.

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If you are on Upcart V1.0

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Step 1: Add custom HTML

  1. Go to Upcart > Cart Editor > Settings > Custom HTML
  2. From the Select HTML Location dropdown, choose Above checkout button
  3. Paste the following code and update the variables to reflect your store’s shipping cost and threshold:
<hr>  
  
<div class="cartSummarySection">  
  <div class="cartSummarySubtotal alignLeft">  
    Subtotal:  
    <span class="alignRight subtotalprice">#{{UPCART_SUBTOTAL}}</span>  
  </div>  
  
  <div class="cartSummaryShipping alignLeft">  
    Shipping:  
    <span class="alignRight upcartShipping"></span>  
  </div>  
  
  <div class="cartSummaryEndTotal alignLeft">  
    Total:  
    <span class="alignRight upcartEndTotal"></span>  
  </div>  
  
  <div style="clear: both; display: flex;"></div>  
</div>  
  
<script>  
  var shippingThreshold = 15000; // In cents  
  var shippingCostWhenUnderThreshold = 290; // In cents  
  var textWhenUnderShippingThreshold = "\$2.90";  
  var textWhenOverShippingThreshold = "FREE";  
  var currencySymbolToAddInfrontOfEndPrice = "\$";  
  var shouldCurrencySymbolBeOnLeftSide = true;  
  
  upcartOnCartLoaded = (cart) => {  
    var shippingText = window.upcartDocumentOrShadowRoot.querySelector(".upcartShipping");  
    var endTotal = window.upcartDocumentOrShadowRoot.querySelector(".upcartEndTotal");  
  
    if (cart.total_price < shippingThreshold) {  
      shippingText.innerText = textWhenUnderShippingThreshold;  
  
      if (shouldCurrencySymbolBeOnLeftSide) {  
        endTotal.innerText =  
          currencySymbolToAddInfrontOfEndPrice +  
          ((cart.total_price + shippingCostWhenUnderThreshold) / 100).toFixed(2);  
      } else {  
        endTotal.innerText =  
          ((cart.total_price + shippingCostWhenUnderThreshold) / 100).toFixed(2) +  
          currencySymbolToAddInfrontOfEndPrice;  
      }  
  
    } else {  
      shippingText.innerText = textWhenOverShippingThreshold;  
  
      if (shouldCurrencySymbolBeOnLeftSide) {  
        endTotal.innerText =  
          currencySymbolToAddInfrontOfEndPrice +  
          (cart.total_price / 100).toFixed(2);  
      } else {  
        endTotal.innerText =  
          (cart.total_price / 100).toFixed(2) +  
          currencySymbolToAddInfrontOfEndPrice;  
      }  
    }  
  };  
</script>

​
Step 2: Add custom CSS

  1. Go to Upcart > Cart Editor > Settings > Custom CSS
  2. Paste the following CSS and adjust background-color or other styles to match your cart footer:
.upcart-footer {  
  padding-top: 0px !important;  
}  
  
.cartSummarySection {  
  background-color: #f6f4ef !important;  
  padding: 10px 23px;  
}  
  
.cartSummarySubtotal,  
.cartSummaryShipping,  
.cartSummaryEndTotal {  
  color: black;  
  width: 100%;  
  text-align: left;  
  font-weight: normal;  
  font-size: 16px;  
  padding: 0;  
}  
  
#CartPopup hr {  
  margin: 0px !important;  
}  
  
.alignLeft {  
  float: left;  
}  
  
.alignRight {  
  float: right;  
}

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Final result

Once applied:
  • A cost breakdown appears above the checkout button
  • Customers see subtotal, shipping (fixed or FREE), and total
  • The shipping cost dynamically adjusts based on your threshold
This increases cost transparency, improves trust, and can reduce checkout abandonment.

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If you are on Upcart V2.0

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Step 1: Go to cart summary module

  1. Go to Upcart > Cart Editor > Cart Summary > Custom template
  2. Paste the following code:
    1. The custom code for the section is from Line 52 to Line 73 
      <div>  
  <div className="upcart-internal-cart-summary upcart-public-cart-summary">  
    <div className="upcart-internal-cart-summary__discount-codes upcart-public-cart-summary__discount-codes">  
      <span className="upcart-internal-cart-summary__discount-label upcart-public-cart-summary__discount-label">  
        {props.totalSavingsText}  
      </span>  
  
      <div className="upcart-internal-cart-summary__slide-codes upcart-public-cart-summary__slide-codes">  
        {props.discountApplications.map((discountApplication) => (  
          <span  
            key={discountApplication.key}  
            className="upcart-internal-component-tag upcart-public-component-tag"  
          >  
            <span className="upcart-internal-component-tag__icon upcart-public-component-tag__icon">  
              <svg  
                xmlns="http://www.w3.org/2000/svg"  
                viewBox="0 0 20 20"  
                focusable="false"  
              >  
                <title>Discount tag icon</title>  
                <path  
                  fillRule="evenodd"  
                  d="M8.575 4.649a3.75 3.75 0 0 1 2.7-1.149h1.975a3.25 3.25 0 0 1 3.25 3.25v2.187a3.25 3.25 0 0 1-.996 2.34l-4.747 4.572a2.5 2.5 0 0 1-3.502-.033l-2.898-2.898a2.75 2.75 0 0 1-.036-3.852l4.254-4.417Zm4.425 3.351a1 1 0 1 0 0-2 1 1 0 0 0 0 2Z"  
                />  
              </svg>  
            </span>  
  
            <span className="upcart-internal-component-tag__text upcart-public-component-tag__text">  
              {discountApplication.title}  
            </span>  
  
            {discountApplication.type === "discount_code" && (  
              <button  
                type="button"  
                className="upcart-internal-component-tag__remove-button upcart-public-component-tag__remove-button"  
                onClick={props.handleRemoveDiscount}  
                aria-label="Remove tag"  
              >  
                {props.isRemovingDiscount ? (  
                  <div className="upcart-internal-component-loader upcart-public-component-loader" />  
                ) : (  
                  <svg  
                    xmlns="http://www.w3.org/2000/svg"  
                    viewBox="0 0 20 20"  
                  >  
                    <path d="M12.72 13.78a.75.75 0 1 0 1.06-1.06l-2.72-2.72 2.72-2.72a.75.75 0 0 0-1.06-1.06l-2.72 2.72-2.72-2.72a.75.75 0 0 0-1.06 1.06l2.72 2.72-2.72 2.72a.75.75 0 1 0 1.06 1.06l2.72-2.72 2.72 2.72Z" />  
                  </svg>  
                )}  
              </button>  
            )}  
          </span>  
        ))}  
      </div>  
    </div>  
  
    <div>  
      {props.showCartTotalDiscount && (  
        <span  
          className="upcart-internal-cart-summary__total-discount upcart-public-cart-summary__total-discount"  
          dangerouslySetInnerHTML=#{{  
            __html: props.formattedCartTotalDiscount,  
          }}  
        />  
      )}  
    </div>  
  </div>  
  
  {/* Custom code for summary section */}  
  <hr />  
  
  <div className="upcart-custom-cart-summary__container">  
    <div className="upcart-custom-cart-summary__row upcart-custom-cart-summary__subtotal">  
      Subtotal:  
      <span  
        className="upcart-internal-cart-summary__total-discount upcart-public-cart-summary__total-discount"  
        dangerouslySetInnerHTML=#{{  
          __html: props.formattedCartTotalDiscount,  
        }}  
      />  
    </div>  
  
    <div className="upcart-custom-cart-summary__row upcart-custom-cart-summary__shipping">  
      Shipping:  
      <span className="upcart-custom-cart-summary__shipping-value">  
        \$2.99  
      </span>  
    </div>  
  
    <div className="upcart-custom-cart-summary__row upcart-custom-cart-summary__cart-total">  
      Total:  
      <span className="upcart-custom-cart-summary__cart-total-value">  
        \${(props.totalAfterAllDiscounts / 100).toFixed(2)}  
      </span>  
    </div>  
  </div>  
</div>
      b. The relevant part is this section from line 52 - 73, use this doc to decide what value you are planning to display on the screen 
        <hr />  
  
  <div className="upcart-custom-cart-summary__container">  
    <div className="upcart-custom-cart-summary__row upcart-custom-cart-summary__subtotal">  
      Subtotal:  
      <span  
        className="upcart-internal-cart-summary__total-discount upcart-public-cart-summary__total-discount"  
        dangerouslySetInnerHTML=#{{  
          __html: props.formattedCartTotalDiscount,  
        }}  
      />  
    </div>  
  
    <div className="upcart-custom-cart-summary__row upcart-custom-cart-summary__shipping">  
      Shipping:  
      <span className="upcart-custom-cart-summary__shipping-value">  
        \$2.99  
      </span>  
    </div>  
  
    <div className="upcart-custom-cart-summary__row upcart-custom-cart-summary__cart-total">  
      Total:  
      <span className="upcart-custom-cart-summary__cart-total-value">  
        \${(props.totalAfterAllDiscounts / 100).toFixed(2)}  
      </span>  
    </div>  
  </div>
      c. Go to Upcart > Cart Editor > Settings > Custom CSS, add this: 
      .upcart-custom-cart-summary__row {  
  display: flex;  
  flex-direction: row;  
  justify-content: space-between;  
}

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Need help?

If you want to adapt this for multiple shipping thresholds or advanced logic, we recommend working with a Shopify Expert. Upcart’s support team does not provide assistance with implementing or debugging custom code.