How to Switch Payroll Providers: Cost, Timeline, and Step-by-Step Guide
A complete switching guide with 12 steps, data migration checklist, provider-specific tips, and common mistakes to avoid.
Switching Cost Summary
$0 - $200
New provider setup fee
2 - 8 hours
Admin time for data migration
1 - 2 months
Overlap period (dual subscriptions)
Best Time to Switch
No YTD data to transfer. Clean start for tax year. New provider handles all W-2s.
Cleaner tax reconciliation at quarter boundaries. Less YTD data to transfer than mid-quarter.
Full YTD data migration required. Split W-2 responsibility. Higher risk of errors. Still doable with careful planning.
12-Step Switching Guide
Choose your new provider
Use our provider comparison to select a new payroll service. Confirm pricing, features, and setup timeline before proceeding.
Do NOT cancel your old provider yet
You will need both providers active for an overlap period of 1 to 2 payroll cycles. Canceling too early creates a gap in payroll processing.
Gather your YTD payroll data
Download or export: year-to-date earnings by employee, federal and state tax withholdings, tax deposit history, benefits deduction details, PTO balances, and any active garnishment orders.
Set up your new provider account
Create your account, add company information, enter state tax IDs, and configure pay schedules. Most providers offer guided setup that takes 1 to 3 hours.
Enter employee data in the new system
Add all active employees with personal details, tax withholding elections (W-4), direct deposit information, and YTD earnings. Double-check SSNs and bank account numbers.
Transfer tax deposit authority
Authorize the new provider to make federal and state tax deposits on your behalf. This requires signing new power of attorney forms (Form 8655 for IRS). Revoke authorization from the old provider.
Run one parallel payroll cycle
Process payroll in both the old and new systems for one cycle (without actually paying through both). Compare outputs to verify calculations match. Resolve any discrepancies before going live.
Go live with the new provider
Process your first real payroll through the new system. Verify direct deposits, tax withholdings, and deductions are correct. Keep the old provider active but on hold.
Notify employees
Inform employees about the new self-service portal. Provide login credentials, instructions for viewing pay stubs, and contact information for payroll questions during the transition.
Verify tax deposits transferred correctly
Confirm that the new provider made all required tax deposits on time. Check your EFTPS account to verify federal deposits. Check state tax portals for state deposits.
Determine year-end form responsibility
Clarify which provider will issue W-2s for the year. If switching mid-year, you may need split W-2s (one from each provider) or a single consolidated W-2 from the new provider. Get this in writing.
Cancel old provider and archive data
Once you have confirmed 2 to 3 successful payroll cycles with the new provider, cancel the old service. Before canceling, export and archive all historical data, pay stubs, tax filings, and reports.
Data Migration Checklist
| Data Category | What to Transfer |
|---|---|
| Employee Master Data | Names, SSNs, addresses, DOB, hire dates, tax withholding elections (W-4) |
| YTD Earnings | Gross pay, taxable wages, pre-tax deductions, post-tax deductions by employee |
| Tax Withholdings | Federal income tax withheld, Social Security, Medicare, state income tax, local taxes |
| Tax Deposit History | Dates and amounts of all federal and state tax deposits made this year |
| Benefits Deductions | Health insurance, dental, vision, 401(k), HSA/FSA, life insurance amounts by employee |
| PTO Balances | Accrued vacation, sick time, personal days, carryover amounts |
| Garnishment Orders | Court orders, IRS levies, child support, payment amounts and recipient details |
| Direct Deposit Info | Bank routing numbers, account numbers, deposit allocation splits |
Provider-Specific Switching Tips
Switching FROM ADP
- ● ADP often has contract terms with early termination fees. Review your agreement before starting the switch.
- ● Data export from ADP Run is limited. Request a full data export in writing before canceling.
- ● ADP may retain tax filing authority for 1 to 2 pay periods after you request cancellation. Coordinate timing carefully.
Switching FROM Paychex
- ● Paychex contracts typically auto-renew. Check your renewal date and provide written notice before the renewal window.
- ● Cancellation may require a certified letter or specific form. Phone cancellation alone may not be sufficient.
- ● Request that Paychex release your state tax agency authorizations promptly. Delays here can cause filing issues.
Switching FROM Gusto
- ● Gusto offers month-to-month billing with no contracts, making cancellation straightforward.
- ● Gusto provides a clean data export including full payroll history. Download before canceling.
- ● Year-end forms: Gusto will issue W-2s for the portion of the year you were with them if you switch mid-year.
Switching FROM QuickBooks Payroll
- ● If you use QuickBooks accounting, switching payroll providers requires reconfiguring your accounting integration.
- ● QuickBooks Payroll data is accessible through QuickBooks Online even after canceling the payroll add-on.
- ● Verify that enhanced payroll features (like direct deposit and tax filing) are fully transferred to the new provider.
6 Common Mistakes When Switching
Double tax deposits
If both old and new providers are authorized to make tax deposits simultaneously, you may get duplicate deposits. This creates cash flow issues and requires filing for a refund with the IRS.
Missed state filings during transition
State quarterly returns (unemployment insurance, income tax) can fall through the cracks during a mid-quarter switch. Assign clear responsibility for each filing.
Forgetting to transfer garnishment orders
Active garnishments must continue without interruption. Missing a garnishment payment puts you in contempt of the court order and exposes you to legal liability.
Losing historical data
Some providers delete historical data 30 to 90 days after cancellation. Download everything before you cancel, including pay stubs, tax filings, and year-end forms.
Switching mid-payroll cycle
Never switch in the middle of a payroll processing cycle. Complete the current cycle fully with the old provider before starting the first cycle with the new one.
Not verifying YTD totals
After the first payroll with the new provider, compare YTD totals to the old system. Even small discrepancies in tax withholdings will cause problems on year-end W-2s.
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