Quarterly Payroll Tax Compliance Checklist

Export the quarterly wage and tax register from Gusto, ADP, Paychex, or Rippling. Confirm the report covers all three months in the quarter and that the run includes any off-cycle bonuses, terminations, and third-party sick pay adjustments.

Pull the W-4 / state withholding exception report. New hires this quarter must have a 2020+ W-4 on file; mid-year changes for marriage, dependents, or multi-state moves are common gotchas. States with their own withholding form (CA DE-4, NY IT-2104, etc.) need a separate review.

Run the contractor list against the IRS common-law factors and any state ABC test (CA, NJ, MA). Flag any 1099 worker who is now functionally a W-2 employee — reclassification mid-year requires a corrected W-2 and amended 941s, so catching it during the quarterly cycle is much cheaper than at year-end.

Tie the payroll register's gross wages by department to the GL salary and wage accounts in QBO, Xero, or Intacct. Variances usually trace to journal entries posted directly to wage accounts (bypassing the payroll feed) or to manual bonuses recorded outside the payroll system.

The payroll clearing account should zero out after each pay date. Outstanding balances point to ACH returns, voided checks not reversed in payroll, or net-pay rounding errors. Document and clear any line older than 30 days before filing.

Download the EFTPS payment history for the quarter and match each 941 deposit to the corresponding pay date. Federal schedule: pay dates Wed/Thu/Fri deposit by following Wed; Sat/Sun/Mon/Tue deposit by following Fri. Bank holidays push deadlines forward and trip up first-time filers.

Apply the IRC 6656 tiered penalty: 2% (1-5 days late), 5% (6-15 days), 10% (16+ days), 15% (after IRS notice). Document each late deposit with date, amount, and tier in the workpaper. If first-time abatement applies, prepare the request now rather than waiting for the IRS notice.

Populate Form 941 from the wage register: line 2 (wages), line 3 (FIT withheld), line 5a-5d (FICA wages and tips), and Schedule B for semiweekly depositors. Most payroll platforms generate the form, but staff should still tie line by line to the source register before submission.

Tie 941 line 2 to the wage register total and 5a/5c to FICA wages. Differences typically come from pre-tax deductions (Section 125, 401(k)) treated inconsistently or from third-party sick pay. Document the reconciling items as part of the workpaper.

Examples by state: CA DE-9 / DE-9C, NY NYS-45, IL IL-941, PA W-3. Multi-state employers need a return per work-state, and remote employees may have triggered a new state registration this quarter — confirm registration status before filing.

E-file through the payroll platform's IRS MeF integration or through a third-party reporting agent. Capture the IRS submission ID and acceptance acknowledgment — a submission without an ack is not a filing.

Schedule the EFTPS payment for the 941 balance and any current-quarter shortfall identified during reconciliation. Save the EFT acknowledgment number; the IRS resolves apparent missed payments using this number, not the filing.

Save the wage register, 941 PDF, state returns, EFTPS confirmations, and reconciliation workpaper to SmartVault, ShareFile, or TaxDome under the client's quarterly tax folder. IRS retention minimum is 4 years from the later of due date or payment date; many firms keep 7.