Keep your shipping rules in Abicart and let the customer choose the delivery method directly in Kustom Checkout.
This guide applies to store administrators with Go, Plus, or Pro who use Kustom Checkout V3 and Abicart as the source for shipping options. If you are going to use an external TMS, a different setup applies: start with the KSA overview. The settings below should not be mixed with the external service's price rules.
1. Activate the KSA setting in the checkout
Open Settings → Checkout.
Select Use Kustom Shipping Assistant.
Choose for Abicart to handle the delivery methods if you get to choose between Abicart and an external TMS.
Click Save.
2. Prepare each delivery method for KSA
Go to Settings → Shipping and edit each delivery method to be displayed. The method must be active and allowed for the current order.
Select Shipping type that corresponds to the actual delivery.
Select the correct Carrier.
Enter both the minimum and maximum Estimated delivery time (in business days). This is your estimate, not a booked or guaranteed delivery time from the carrier.
For Pick parcel from Store also enter the pickup address/store location.
Click Save.
Select the correct shipping type
Delivery to Address/Door: home delivery to address/door.
Pick parcel from Store: the customer picks up in your store. Store location must be specified.
Delivery to unspecified Pickup point: delivery to a yet unspecified pickup point.
Delivery using Postal Network: delivery via the postal network.
Carrier decides Shipping Method: the carrier decides the delivery method.
Digital delivery for downloadable products: digital delivery of downloadable products.
The names may be translated in the admin. Choose based on what the method will actually do. None of the shipping types create a carrier agreement or a shipping booking. For the customer to choose a specific carrier service point themselves, an external TMS setup with support for this is needed.
3. Check countries and shipping prices
KSA still uses Abicart's allowed delivery methods and shipping price calculation in this setup. An existing free shipping threshold therefore also applies when the method is displayed in Kustom's window. Check the amount for the currency and VAT handling used in the purchase.
For example, limit a method to Sweden
Open the method's tab Shipping rates and check that the rate you want to use exists. A flat shipping rate does not require weights on all products; weight-based rates do.
Open Connect rate to delivery address.
For a method that should only apply in Sweden, select No delivery as the default rate and remove broader region connections that would otherwise allow other countries.
Connect the intended rate to Sweden under Countries within the EU and save.
Check the column Applies in in the shipping list and then check the checkout with both Sweden and a country that should be excluded.
The country's connection takes precedence over the region's; if no specific connection exists, the default rate is used. A global default rate can therefore cause an option to be displayed in more countries than you intended. Methods without an applicable rate are not displayed just because they are active.
4. Activate KSA on the payment method
Go to Settings → Payment methods.
Edit Kustom Checkout.
Select Use Kustom Shipping Assistant.
Click Save. Read and handle any terms or setting warnings that appear in the activation flow.
The delivery methods are now displayed inside Kustom's checkout window instead of as Abicart's separate shipping selection below the shopping cart.
5. Check the result and troubleshoot
Method is missing: check Active, shipping type, carrier, min/max delivery time, any store location, and that the correct country, rate, and customer type are allowed.
Incorrect shipping price: check the correct rate and weight range, free shipping threshold, currency, and VAT. Do not change an external TMS price rule when Abicart controls the shipping.
Free shipping doesn't work as expected: check that it is the same delivery method and the correct currency. Try shopping carts below, at, and above the threshold.
Incorrect service point selection: The Abicart setup does not provide a map with a choice of carrier service points. See the KSA overview if you need this.
Quick start
Activate KSA under Settings → Checkout with Abicart as the shipping source.
Fill in the shipping type, carrier, and delivery time on all intended shipping methods.
Check countries, rates, and the free shipping threshold.
Activate KSA on Kustom Checkout and check the checkout for relevant customer cases.
Subscription and costs
Kustom Checkout is available in Go, Plus, and Pro. KSA can be activated with Kustom Checkout at no extra Abicart fee. Shipping, carrier agreements, and any other shipping services have separate costs. This guide applies to Abicart's own delivery methods, not pricing from an external TMS.