401(k) Nondiscrimination Testing Explained: ADP, ACP, and Coverage Tests
Understand 401(k) ADP, ACP, and coverage testing in plain English, including data preparation, plan terms, corrections, and sponsor review steps.
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Compliance testing and annual administration
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36 resources in this topic. Showing the first 24.
Why 401(k) Plans Fail ADP and ACP Testing—and What Sponsors Can Do Next
A sponsor-focused guide to diagnosing a failed ADP or ACP test, assessing correction paths, meeting deadlines, and preventing a repeat failure.
401(k) Top-Heavy Rules: How Key Employees Can Trigger Employer Contributions
Learn how the 401(k) top-heavy test works, why key-employee identification matters, and how sponsors can budget, document, and review required contributions.
401(k) Coverage Testing and Controlled Groups: A Guide for Related Businesses
A practical guide to 401(k) coverage testing and controlled groups, with ownership-data controls and review steps for related businesses.
Which 401(k) Tests Does a Safe Harbor Plan Actually Avoid?
ADP and ACP testing Practical guidance for employers, HR, and plan administrators.
Safe Harbor 401(k) and Top-Heavy Rules: When the Exemption Can Disappear
safe harbor top-heavy exemption Practical guidance for employers, HR, and plan administrators.
Cross-Testing a Profit-Sharing Plan: EBARs, Rate Groups, and Coverage
Understand cross-testing profit sharing, equivalent benefit accrual rates, rate groups, and the need for annual coverage testing.
ADP Testing Explained: How the 401(k) Actual Deferral Percentage Test Works
Learn how ADP testing compares elective deferrals for HCEs and NHCEs, what the passing limits mean, and how sponsors can prepare.
ACP Testing Explained: Which Contributions Count and How the Test Works
Understand ACP testing inputs, how matching and after-tax contributions differ from ADP inputs, and how to build a reliable annual workflow.
ADP/ACP Test Failure: Correction Options, Deadlines, and Sponsor Decisions
Review ADP/ACP failure correction paths, timing considerations, and prevention choices with a practical sponsor decision framework.
Current-Year vs. Prior-Year ADP Testing: Which Method Should a Plan Use?
Compare current-year and prior-year ADP testing methods, their planning tradeoffs, and the document review sponsors need before changing course.
How Payroll Errors Distort ADP and ACP Test Results
See how compensation, eligibility, classification, and contribution-code mistakes can distort ADP and ACP testing—and how to build better controls.
401(k) Top-Heavy Testing: The 60% Test in Plain English
Learn how the 401(k) top-heavy ratio works, who counts as a key employee, and what sponsors should review before making minimum contributions.
Top-Heavy Minimum Contributions: Who Receives Them and How Much?
Understand who may receive top-heavy minimum contributions, how the general 3% rule works, and why plan-document review matters.
When a Safe Harbor 401(k) Plan Still Needs Top-Heavy Testing
Learn when a safe harbor 401(k) may be exempt from top-heavy testing and why additional contribution features deserve document-level review.
How to Forecast Top-Heavy Status Before Year-End
Build a practical top-heavy forecast using determination-date data, key employee classifications, account adjustments, and documented assumptions.
401(k) Coverage Testing Under IRC 410(b): A Practical Guide
A coverage test is a structured comparison of who benefits under a plan, not simply a headcount exercise. Learn the records, comparisons, and annual contro
How Controlled Groups and Affiliated Service Groups Affect Coverage Testing
Related-employer analysis can change the employee population used for coverage testing, so it should happen before percentages are calculated. Learn the re
How Forfeitures and Employer True-Ups Affect 415(c) Testing
Year-end forfeiture allocations and employer true-ups can change a participant’s annual-additions total after routine payroll monitoring is complete. Learn
IRC 402(g) Elective Deferral Limit: Employer Compliance Guide
A participant-level 402(g) control should aggregate regular pre-tax and designated Roth elective deferrals, then reconcile payroll records to the recordkeeper b
401(k) Nondiscrimination Testing: Every Annual Test Plan Sponsors Should Know
Annual 401(k) compliance involves connected testing and operational workstreams, so sponsors need a calendar that links plan terms, census data, contributions,
401(k) Census Data Checklist: Fields Your TPA Needs for Accurate Testing
A controlled census gives a TPA the population, dates, compensation, contribution, and classification facts needed to apply plan terms consistently.
Five Census Data Errors That Cause False Compliance Test Failures
A surprising compliance-test result can be a data problem. Check population, dates, compensation, ownership, and service fields before changing plan operations.
The First 90 Days After Plan Year-End: Compliance Priorities
Learn 401k first quarter compliance deadlines with a practical guide for plan sponsors, HR, and finance teams.
How to Build a Compliance Calendar for a Non-Calendar-Year 401(k) Plan
Learn non calendar year 401k deadlines with a practical guide for plan sponsors, HR, and finance teams.
Blackout Period Notices: A Compliance Guide for Recordkeeper and Investment Changes
Prepare for recordkeeper or investment changes with a participant-centered blackout notice process, timeline, delivery controls, and recovery plan.
SECURE 2.0 for Small Businesses: A 2026 Compliance and Opportunity Guide
Understand SECURE 2.0 for a small business with a practical employer guide to decisions, payroll coordination, implementation, and review.
CalSavers Compliance Checklist: Registration, Rosters, Payroll, and Exemptions
A practical CalSavers compliance checklist covering registration, exemption records, employee rosters, payroll coordination, and review.
Can a Medical Practice Cover Doctors and Staff Differently? A Guide to Nondiscrimination Constraints
Explore medical practice retirement plan nondiscrimination with practical workforce, compensation, funding, and compliance questions for a physician practi
403(b) Universal Availability: A Compliance Guide for Nonprofit Employers
A practical guide to 403(b) universal availability for a nonprofit employer—what a nonprofit HR and finance team offering employee salary deferrals should defin
403(b) or 401(k) for a Nonprofit? Compare Governance, Eligibility, and Testing
A practical guide to 403(b) versus 401(k) governance, eligibility, and testing for a nonprofit—what a nonprofit executive team and finance committee evaluating
Family Attribution Rules That Can Change Your Company’s Retirement Plan Testing
Family Attribution Rules That Can Change Your Company’s Retirement Plan Testing. Review the facts, documents, and next steps before acting.
How Compensation Definitions Affect Deferrals, Matching Contributions, and Testing
A compensation definition is a plan-rule input, not a payroll shorthand. The same payment can be included for one purpose and excluded for anothe Learn the cont
TPA RFP Template: What to Ask About Compliance, Service, and Fees
A practical guide for plan sponsors comparing TPA RFP template: decision criteria, due diligence questions, costs, service, implementation, and review.
10 Warning Signs Your Retirement Plan Needs a Compliance Checkup
Spot ten practical warning signs that a retirement plan may need a compliance checkup, then organize a documented response.
From Compliance to Outcomes: A Maturity Model for Retirement Plan Sponsors
A sponsor maturity model helps a committee move from completing required tasks to using evidence, governance, and communication to improve how the plan ope