Shipping rates by subzones

We want to setup the shipping rate by subzone for the UK. We need to this based on the product groups
if Group A → subzone 1 → rate = 40
Group B → subzone → rate = 50
We run into two:

1: We need different product ships to the same subzone with different price. We have tried many Shopify shipping app they mentioned to not use the same zipcode twice.

2: When different product group are in the cart & group A rates are different set then we need the higher rate.

If anyone can know how to resolve this, please let me know.
Thanks!

For scenarios where you need to charge different shipping rates based on the product type and shipping zones, a Shopify app like PluginHive’s Multi Carrier Shipping Label App can help. The app lets you create product-zone based shipping rules, defining rates by product group and zones classified by country, state, or postcode, so you can avoid postcode conflicts while maintaining separate rates.

It also handles smart rate combinations automatically, picking the highest applicable rate when multiple product groups are in the same cart. You can display real-time rates at checkout with adjustments if needed, giving customers clarity while shopping.

Beyond rates, the app automates the shipping workflow: printing labels and sending live tracking updates directly from your Shopify store. This setup gives you full control over shipping, even for complex scenarios like subzone-based pricing by product type.

Hey @GlazeDev

Generally speaking, having 2 or more post codes in more than one Sub-Zone causes a lot of over charges or charges that should not display.

A way to workaround that would be to create the Subzones as needed within the UK (keeping it one post code per zone), and create a rule that looks for product tags. When the group A or Group B products are in the cart, the shipping price can be either added together, the highest rate to display or average even. This can be created with either a rate-blend or shipping rules that when the most expensive product group is in the cart, that rate is displayed.

If you would like to learn more, you can research about our app Intuitive Shippng, or if you have any questions, please do let me know.

Chelsey