commerce-8.x-2.8/modules/tax/commerce_tax.services.yml

services:
  plugin.manager.commerce_tax_type:
    class: Drupal\commerce_tax\TaxTypeManager
    parent: default_plugin_manager

  commerce_tax.chain_tax_rate_resolver:
    class: Drupal\commerce_tax\Resolver\ChainTaxRateResolver
    tags:
      - { name: service_collector, call: addResolver, tag: commerce_tax.tax_rate_resolver }

  commerce_tax.default_tax_rate_resolver:
    class: Drupal\commerce_tax\Resolver\DefaultTaxRateResolver
    tags:
      - { name: commerce_tax.tax_rate_resolver, priority: -100 }

  commerce_tax.tax_order_processor:
    class: Drupal\commerce_tax\TaxOrderProcessor
    arguments: ['@entity_type.manager', '@commerce_price.rounder', '@commerce_tax.chain_tax_rate_resolver']
    tags:
      - { name: commerce_order.order_processor, priority: 50, adjustment_type: tax }