---
schema_version: "1"
id: e056c767c5eb91401f467d093935f942ef4481e742ff438bced49b9ba3bab986
title: Boost Tax and Fee Evaluation with the Constraint Rules Engine
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/264-0-0/rn_insurance_constraint_rules_engine_tax.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_insurance_constraint_rules_engine_tax.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: e5e6c1d76bfdcbd289ebddcb22226bd1e034ff555057f7c94cab5dd533e1b72c
description: Define business rules for product surcharges with greater flexibility and include more criteria and actions by using the Constraint Modeling Language (CML). With the CML rules for product configuration, underwriting, exclusions and clauses, and product surcharges unified in a single constraint model, simplify maintenance and help new users learn the rules framework quickly. When your reps rate a quote, the Constraint Rules Engine evaluates the product surcharge rules faster and in a single pass to calculate taxes and fees more efficiently.
products:
  - Cross Cloud
release: "264"
---
# Boost Tax and Fee Evaluation with the Constraint Rules Engine

Define business rules for product surcharges with greater flexibility and include more criteria and actions by using the Constraint Modeling Language (CML). With the CML rules for product configuration, underwriting, exclusions and clauses, and product surcharges unified in a single constraint model, simplify maintenance and help new users learn the rules framework quickly. When your reps rate a quote, the Constraint Rules Engine evaluates the product surcharge rules faster and in a single pass to calculate taxes and fees more efficiently.

**Where:** This change applies to Lightning Experience in Enterprise and Unlimited editions with Digital Insurance.