Check year-to-date balances before switching payroll providers

Choose a cutover boundary by payroll run and payment date. Identify which provider handles corrections, deposits, quarterly reporting, and year-end reporting for each period. Do not assume importing prior payroll automatically transfers every filing responsibility.

Ask both providers to confirm the arrangement in writing, including access to historical records after termination. Outsourcing arrangements differ, and employers can retain responsibilities under the applicable rules. The IRS warns businesses to understand their duties when using a payroll service provider.

Obtain the detailed year-to-date register, applicable taxable wage totals, deductions, employer costs, and prior payment records. Compare employee identifiers and the legal employing entity. Preserve historical names or other changes through the appropriate secure records rather than creating a second employee unintentionally.

Check totals by employee and payroll category, not only the company-wide gross wages. Two employees with offsetting errors can leave the company total unchanged. Different taxable wage bases and benefit treatments may also require distinct fields, so use the providers' documented migration requirements.

Compare the proposed payroll with the approved compensation, hours, deductions, and expected period. Review year-to-date totals after the new run is added. A migration should not reset an employee's history or cause prior pay to be disbursed again.

For an illustrative employee with $40,000 of prior gross pay and $4,000 in the first new run, the combined gross total should be $44,000 before corrections. That check is only one part of validation; tax and benefit fields need their own review by the responsible payroll specialist.

Match the first funding debit and employee payments to the approved run, then check required deposit and filing evidence through the employer's established process. Keep rejected or corrected submissions visible until resolved. A successful employee payment does not prove every tax task was completed.

Retain the old provider's final exports and the new provider's accepted opening balances together. After the next reporting period, compare the submitted totals with the combined payroll history. Remove obsolete access only after records and outstanding responsibilities have been handed over.