Mid-year is the ideal time to audit your MasterTax™ configuration — before the volume and complexity of year-end processing exposes gaps that are far more expensive to fix under deadline pressure. After 15 years of MasterTax™ consulting, we have identified the areas that most frequently cause problems when they are not reviewed proactively.
Here is the health check we recommend running every June.
Review Your Tax Code Hierarchy
MasterTax™ organizes taxes in a parent-child hierarchy where minor tax codes report under their associated major tax code and form. Over the course of a year, legislative changes, new state programs, and internal configuration updates can create orphaned codes, mislinked relationships, or duplicated entries. Pull a full tax code listing and verify that every minor tax correctly maps to its parent major tax and associated form.
Validate Filing Frequencies and Due Dates
States regularly adjust filing frequencies based on deposit size, and those thresholds can shift from year to year. If your organization crossed a deposit threshold during Q1 or Q2, your filing frequency may have changed — and MasterTax™ will not update itself automatically. Review every jurisdiction where you have an active filing obligation and confirm the frequency and due dates match current requirements.
Test Parallel Run Configurations
Parallel runs are one of the most powerful features in MasterTax™ for catching discrepancies between your payroll system and your tax engine. But we frequently see clients who either skip parallel runs entirely or run them without reviewing the output. Before peak season, run a full parallel comparison for at least one recent pay period across all active jurisdictions and review the variance report for any differences above your tolerance threshold.
Audit User Access and Approval Workflows
Role-based access in MasterTax™ should reflect your current team structure. Employee turnover, reorganizations, and cross-training initiatives throughout the first half of the year can leave access permissions out of date — former team members with active credentials, new staff without the access they need, or approval chains that route to the wrong person. A mid-year audit of user roles takes 30 minutes and prevents significant operational risk.
Confirm Integration File Specs
If your payroll system sends data to MasterTax™ via file-based integration, confirm that the file specification has not drifted. Even small changes to field positions, date formats, or delimiter characters can cause import failures or — worse — silent data corruption. Compare your current outbound file against the documented spec and run a test import to confirm everything maps correctly.
Do Not Wait for Year-End
The clients who have the smoothest year-end processing cycles are the ones who catch configuration issues in June, not December. A mid-year health check is an investment of a few hours that reliably saves dozens of hours and thousands of dollars in corrections later. If you do not have the internal bandwidth to run this review yourself, our team can do it for you.