Schedule R 2018 Aggregate Form 941 Allocation Guide

Allocation Schedule for Aggregate Form 941 Filers

Checklist – 2018

Schedule R allocates quarterly employment tax liabilities and credits among clients when a

Section 3504 agent or Certified Professional Employer Organization files aggregate Form 941.

Section 3504 agents receive IRS authorization through Form 2678 to perform employment tax withholding, reporting, and payment duties on behalf of one or more employers.

Establishing Authorization and Client Records

Verify IRS approval to act as a Section 3504 agent or confirm CPEO certification before filing aggregate Form 941 for the 2018 calendar year. Section 3504 agents file Form 2678 to request authorization, and the IRS must approve this designation before the agent can file aggregate returns.

Obtain the complete legal name and Employer Identification Number for each client participating in the aggregate filing arrangement. List clients in consistent order across all quarterly filings to maintain accurate record alignment throughout the tax year.

Adjusting for Tax Cuts and Jobs Act Changes

The Tax Cuts and Jobs Act introduced revised federal income tax withholding tables effective

January 1, 2018, which increased take-home pay for many employees. Review payroll records to confirm that withholding calculations reflect the new tables rather than prior-year rates.

Recalculate withholding on bonuses or retroactive pay adjustments issued during the first quarter of 2018 using updated percentages. Accurate federal income tax allocation on Schedule

R depends on applying the correct withholding rates for each pay period throughout the calendar year.

How to Allocate Employment Taxes and Credits on

Schedule R for 2018

1. Step 1: Allocate Federal Income Tax and Payroll Taxes

   Distribute total federal income tax withheld for each quarter among clients based on actual withholding records maintained during each payroll processing cycle. Allocate Social Security tax at the combined rate of 12.4 percent and Medicare tax at 2.9 percent to the client for whom each employee performed services.

   Match allocations to monthly payroll reconciliations and quarterly deposit records to maintain consistency between Schedule R and aggregate Form 941 totals. Confirm that each client’s allocation reflects only the wages paid to employees performing services under that client’s direction and control.

2. Step 2: Apply Wage Base Limits and Additional Medicare Tax

   The 2018 Social Security wage base limit was $128,400 per employee. Apply this limit when calculating Social Security tax liability for each client, and verify that no additional Social

   Security tax appears on wages exceeding the base amount.

   Additional Medicare tax applies at 0.9 percent on wages exceeding $200,000 per employee, regardless of the employee’s filing status. Employers withhold this tax when wages surpass the

   $200,000 threshold, and no employer matching contribution exists for the additional Medicare tax portion.

3. Step 3: Document Credits and Maintain Supporting Records

   Identify clients that generated Work Opportunity Tax Credit wages or other employment-related credits during 2018. Section 45S provides a general business tax credit for employers offering paid family and medical leave, which employers claim on annual income tax returns using Form

   3800 rather than on Form 941.

   Allocate credits proportionately to clients who employed qualifying individuals or incurred qualifying expenses. Maintain contemporaneous documentation supporting each allocation, including certification letters for Work Opportunity Tax Credit claims and Form 8994 for Section

   45S claims.

• Retain complete payroll registers for each client that show wage distributions and the
• Employee time records and compensation documentation should be maintained to
• Copies of wage statements should be retained to document federal income tax
• Retain electronic payment confirmations from EFTPS or other IRS-approved electronic

4. Step 4: Reconcile Schedule R to Aggregate Form 941 Totals

   Verify that the sum of all client allocations on Schedule R equals the totals reported on aggregate Form 941 for federal income tax withheld, Social Security wages, Medicare wages, and claimed credits. Cross-reference Schedule R amounts to quarterly worksheets or payroll software reports used during Form 941 preparation.

   Confirm that no wages, taxes, or credits appear twice or are omitted during the allocation process. Each line on Schedule R must trace directly to supporting payroll records for the corresponding client and quarter.

   Required Documentation for Schedule R Filing

   Attach Schedule R to each quarterly Form 941 filing with a signed declaration confirming the allocation’s completeness and accuracy. Include electronic deposit confirmations showing payments made on behalf of the aggregate group throughout 2018.

   Retain the following records for a minimum of four years from the Form 941 filing date: associated federal income tax, Social Security tax, and Medicare tax calculations. substantiate how wages and payroll taxes were allocated among clients. withholding and payroll tax amounts reported for each employee. deposit methods to verify timely tax deposits made on behalf of the aggregate group.

   Filing Deadlines and Extension Rules