---
title: Client scripts installed with Contract Management
description: Client scripts are added with Contract Management.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/it-asset-management/contract-management/r\_ClientScriptsIWContractMgmt.html
release: australia
product: Contract Management
classification: contract-management
topic_type: reference
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [Components installed with Contract Management, Contract Management, Common applications, Asset Management]
---

# Client scripts installed with Contract Management

Client scripts are added with Contract Management.

|Name|Table|Description|
|----|-----|-----------|
|Calculate Tax Cost - Base cost|Contract \[ast\_contract\]|Calculates the **Tax cost** field and the **Total cost** field on the Contract form when the **Payment amount** field changes.|
|Calculate Tax Cost - Sales tax|Contract \[ast\_contract\]|Calculates the **Tax cost** field and the **Total cost** field on the Contract form when the **Sales tax** field changes.|
|Calculate Tax Cost - Tax rate|Contract \[ast\_contract\]|Calculates the **Tax cost** field and the **Total cost** field on the Contract form when the **Tax rate** field changes.|
|Ensure discount is valid percent|Contract \[ast\_contract\]|Ensures that the **Discount** field does not contain a value less than zero or greater than 99.|
|Renew Cost Adjustment|Contract \[ast\_contract\]|Sets the **Percentage** field on the Contract form to zero if the user sets a dollar amount for the cost adjustment.|
|Renew Cost Percentage|Contract \[ast\_contract\]|Sets the **Amount** field on the Contract form to zero if the user enters a percentage for the cost adjustment.|
|Tax exempt/ rate|Contract \[ast\_contract\]|Changes all tax-related fields on the Contract form to read-only if the **Tax Exempt** check box is selected.|
|Tax rate/exempt|Contract \[ast\_contract\]|Changes all tax-related fields on the Contract form to writeable if the **Sales Tax** check box is selected.|

**Parent Topic:**[Components installed with Contract Management](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-asset-management/contract-management/r_ComponentsInstalledWContractMgmt.md)