Tax Engine Integration
Summarize
Summary of Tax Engine Integration
The Tax Engine Integration in ServiceNow’s Accounts Payable Operations (APO) allows customers to connect external tax engines to validate supplier-provided tax amounts against independently calculated system tax. This integration supports automatic, manual, and scheduled tax validation for PO, Non-PO, and credit memo invoices, ensuring accurate tax calculations, compliance, and efficient straight-through invoice processing.
Show less
Key Features
- External Tax Engine Integration: Connects to enterprise tax engines using ServiceNow’s integration framework for authoritative tax calculations.
- Intelligent Tax Calculation: Validates supplier tax based on invoice details such as ship-to location, items, services, jurisdiction, exemptions, and customer tax configurations.
- Granular Comparison Logic: Performs tax validation at both invoice line item and header levels for maximum accuracy.
- Configurable Tolerance Thresholds: Allows customers to define acceptable variances between supplier and system tax amounts, enabling automatic approval when within tolerance.
- Scheduler-based Recalculation: Automatically reinitiates tax validation for invoices with integration errors or when invoice data changes, maintaining ongoing accuracy.
- Multiple Validation Modes: Supports synchronous automatic validation during invoice processing, manual validation by AP specialists, and background scheduled jobs.
How Tax is Calculated and Validated
APO captures supplier-declared tax amounts and compares them against system-calculated tax derived from the external tax engine. Internal tax components roll up to a system tax total, which is then compared to supplier tax at line and header levels. Differences outside the configured tolerance trigger tax exceptions, requiring manual review.
Tax validation is triggered:
- For Non-PO invoices, after the invoice is accepted.
- For PO invoices, after PO matching is complete.
Tax Calculation Framework Components
- Accounts Payable Operations: Entry point that determines if tax calculation is needed and manages tax status through a staging table.
- Source-to-Pay Integration Framework: Handles data mapping and communication between APO and the external tax engine, processing tax engine responses and updating invoice tax status.
- External Tax Engine: Performs tax computations and returns tax data for validation and automatic tax line creation within APO.
Benefits for ServiceNow Customers
- Reduced Manual Effort: Automates tax calculation and reconciliation, minimizing manual tax line entry.
- Improved Accuracy: Utilizes authoritative third-party tax logic to ensure correct tax computation.
- Stronger Compliance: Ensures consistent validation across jurisdictions and invoice types.
- Faster Invoice Processing: Increases straight-through processing rates and reduces exceptions.
- Clear Exception Visibility: Highlights over- and under-tax variances at line and header levels for easy review.
Practical Notes for Implementation
Customers upgrading to the latest APO version must run a scheduled job to close open exceptions tied to deactivated exception definitions, ensuring smooth transition and accurate exception management.
Integrate an external tax engine to validate supplier-provided taxes against calculated from external tax engines resulting in accurate, conforming, straight through processing and improving efficiency.
The Accounts Payable invoice processing invokes the external tax engine to validate supplier tax (based on ship to, item, service, category, amounts, jurisdiction, exemptions, other tax configuration) against system tax and drive straight through processing for matching outcomes. During invoice data extraction, the tax rate and tax amount will be stored as supplier tax rate and supplier tax amount at both header and invoice line levels. Tax integration is applicable for invoices of type PO, Non-PO and credit memo; supporting automatic, manual, and scheduled tax validation ensuring taxes remain correct even when invoices change or temporary integration issues occur.
How system tax is calculated
How system tax is calculated-Accounts Payable Operations captures supplier-declared tax amounts exactly as provided and validates them against independently calculated system tax. Internal tax line breakdowns roll up to system tax only, which is then compared against the supplier-declared amount. If the difference is not within the configured tolerance threshold or if the difference is lower or more than threshold, then tax exception is raised. Roll up logic applies only to system tax, not to supplier-declared tax.
Example: A supplier sends an invoice with a sales tax amount for each line item. When recording the corresponding liability, the buyer may internally calculate tax and split into State, County, and District tax components. These components are recorded as internal tax lines. The sum of these internal tax lines (roll up to invoice line or header as system tax) is then validated against the supplier tax declared at the invoice line level.
- For Non- PO invoices, after the invoice state is changed to accepted state.
- For PO invoices, after the PO matching state is completed.
Key capabilities
- External tax engine integration- Connects to enterprise tax engines using integration framework.
- Intelligent tax calculation- System validates supplier tax against system tax using invoice fields (based on ship to, item, service, amounts, jurisdiction, exemptions, customer tax configuration).
- Granular comparison logic-
- Line-level and Header-level validation- The extracted values are stored as it is and the system compares tax at the invoice line item and header level for maximum accuracy.
- Configurable tolerance-Define acceptable variance thresholds. The system auto-approves tax when the variance is within the configurable tolerance.
- Scheduler based re-calculation- The scheduler will automatically reinitiate the tax integration process for invoices with tax status of integration error, or recalculate tax.
Benefits of Tax Engine integration
- Reduced manual effort – Automatic tax calculation and reconciliation removes the need for manual tax line entry.
- Improved accuracy – Taxes are calculated using authoritative third‑party tax logic.
- Stronger conformance – Consistent validation across jurisdictions and invoice types.
- Faster invoice processing – Higher straight‑through processing rates and fewer exceptions.
- Clear exception visibility – Over‑tax and under‑tax variances are surfaced at line and header levels.
Tax calculation framework
The tax calculation framework is structured as a modular, three-tier architecture to promote scalability, maintainability, and extensibility. The framework seamlessly integrates Accounts Payable Operations and the external Tax engine, enabling automated and coordinated tax computation. The validation logic is applied at:- Line‑level and Header-level comparison (primary)- Supplier tax and system tax are compared at the invoice line level and header level for maximum accuracy.
- Configurable tolerance-Customers can define acceptable variance thresholds. Invoices within tolerance are automatically approved.
| Components | Key functions |
|---|---|
| The Accounts Payable Operations serves as entry point for tax calculation. When an invoice is in PO matching or accepted state in the Accounts Payable Operations, the system determines if tax calculation is required or not. |
|
| The Source-to-Pay integration framework is a processing layer between Accounts Payable Operations and the external tax engine. |
|
| The external tax engine computes the tax. | Calculates the tax and returns the response. The response is processed, tax lines are created automatically for the applicable invoice in Accounts Payable Operations. The system triggers exception engine based on the response from tax engine. Tax exception is raised when supplier tax and system tax mismatch in the invoice. Invoice tax status is set to integration error and Accounts Payable specialist investigates the case manually. If the invoice is modified after last execution (change amounts, add lines or adjust tax codes), then the tax is recalculated. The tax processing is re-initiated. on successful validation, the invoice processing proceeds to payment. |
Tax validation modes
- Automatic (synchronous)-Runs automatically at key invoice processing milestones
- Manual (on-demand)-AP specialists can trigger tax validation during invoice exception review. This is applicable or accessible from the tax exception
- Scheduler re-calculation-Background jobs automatically re‑initiate tax validation for invoices that are in progress, or recalculate tax status and integration error status. This verifies taxes stay accurate even if invoice data is updated or external calls fail temporarily.
Tax integration workflow
A high level workflow of how tax integration works in Accounts Payable Operations is shown previous.