How to add carrier shipping rates in WooCommerce

Open each physical product and confirm its weight and dimensions are accurate. Carrier services use the cart contents, destination and package details to calculate rates, so missing or incorrect data can produce an error, an inflated quote or no rate at all.

For variable products, check the shipping data for each variation where applicable. Also record your warehouse or store origin, because most carrier connections need it when calculating delivery charges.

Go to WooCommerce > Settings > Shipping > Shipping zones. Create zones for the destinations you actually serve, such as domestic delivery, nearby regions and international countries. A customer matches only the first zone that applies to their address, so put narrower zones above broader ones.

Open the relevant zone and select Add shipping method. WooCommerce includes Flat Rate, Free Shipping and Local Pickup, but these are not live carrier quotes. They are useful as fallback or fixed-price options, not as a replacement for carrier-rate integration.

Install a shipping extension that supports your carrier and the countries where you sell. Carrier extensions usually connect to an API or connected shipping service, then return available services and prices at checkout. Follow that extension's instructions for credentials, origin address, packaging rules and enabled services.

WooCommerce's built-in shipping features do not include live rates or label printing. For example, WooCommerce Shipping provides label tools but does not itself provide live checkout rates; live rates require a compatible carrier-rate extension.

Return to the shipping zone that should show the carrier quotes, select Add shipping method, and choose the method supplied by your extension. Save it, then open its settings and enable only the services you want customers to see, such as standard, tracked or express delivery.

Keep a fixed-rate or free-shipping method only if you intend customers to see it alongside the carrier options. Some extensions also offer a fallback rate when the carrier cannot return a quote. Set that deliberately; an accidental fallback can let an order through with a shipping charge that does not cover postage.

Test the cart with products that have different weights and sizes, then enter addresses in every shipping zone. Check that the returned service names, prices, taxes and delivery options are correct on both the cart and checkout pages.

If no rate appears, first check the matched zone, the product weight and dimensions, the carrier credentials, the origin address and the extension's logs or debug setting. WooCommerce can display the matched shipping zone and bypass its shipping-rate cache when shipping debug mode is enabled.

If your UK store ships with Royal Mail, use a carrier-specific extension rather than trying to reproduce Royal Mail pricing with several Flat Rate methods. WooCommerce Royal Mail is designed to add Royal Mail rates and can also provide tracking and label features, depending on the enabled configuration.

Install and activate the extension, connect or enter the required Royal Mail settings, add its shipping method to the correct zones, then repeat the address and product tests above. The manual Flat Rate route remains fine when you charge one predictable amount, but it will not calculate live Royal Mail quotes.