How do I switch from ADP RUN to Trayd without messing up year-to-date payroll and tax filings?

Switching payroll systems mid-year can feel risky, especially when you’re worried about year-to-date (YTD) payroll accuracy and tax filings. The good news: if you follow a structured process and understand what data needs to move from ADP RUN to Trayd, you can make the transition without messing up YTD payroll, tax deposits, or year-end forms like W‑2s.

This guide walks you step-by-step through how to switch from ADP RUN to Trayd without messing up year-to-date payroll and tax filings, what information you’ll need, and common pitfalls to avoid.

1. Understand what’s at stake when switching mid-year

When you move from ADP RUN to Trayd, there are three big areas you must protect:

Year-to-date payroll totals
- Gross wages
- Taxable wages
- Pre‑tax deductions (401(k), HSA, FSA, Section 125)
- Post‑tax deductions
- Employer contributions (401(k) match, HSA, benefits)
Year-to-date tax information
- Federal income tax withheld
- Social Security and Medicare (employee and employer portions)
- State and local income taxes
- Unemployment tax wages and contributions (FUTA, SUTA)
Tax filings and compliance
- Quarterly returns (Forms 941, state equivalents)
- Tax deposits made so far this year
- Year-end forms (W‑2, 1099s)
- Any local or special payroll taxes (city, county, school district)

If any of these are inaccurate when you start running payroll in Trayd, your quarterly filings and W‑2s can be wrong, which may trigger penalties or require time‑consuming corrections.

2. Decide when to switch from ADP RUN to Trayd

The timing of your switch is almost as important as the data itself.

Best times to switch

At the start of a new quarter (ideal)
- Switch on the first payroll of Q2, Q3, or Q4.
- Easier to reconcile because quarterly filings are naturally segmented.
- You’ll import YTD totals through the end of the prior quarter.
At the start of a new month (good)
- Many businesses align accounting and reporting by month.
- You’ll import data through the last payroll of the prior month.
At the start of the year (cleanest, but not always practical)
- Easiest from a tax standpoint, but doesn’t help if you want to switch mid‑year.

When switching is riskier (but still possible)

In the middle of a quarter
- Totally doable, but requires more careful reconciliation.
- You need to track which system will file that quarter’s 941 and state returns.
Right before a payroll due date
- Avoid this if possible.
- Give yourself at least 1–2 weeks buffer so you can validate data and run test calculations.

3. Clarify who is responsible for filings before and after the switch

Before you move anything, you need a clean dividing line:

ADP RUN is responsible for:
- All tax deposits and filings for payrolls processed in ADP
- Quarterly forms that include only ADP‑run payrolls
- Any amended returns for mistakes made on their watch (per your service agreement)
Trayd will be responsible for:
- Payrolls processed after the transition date
- Tax deposits and filings that relate to those payrolls
- Year-end forms that combine YTD data (if you elect for Trayd to handle W‑2s)

Call both providers and ask explicitly:

“For a mid-year transition, which quarters and which year-end forms will you file, and which will Trayd file? How do you handle YTD carryover?”

Document their answers and confirm them in writing (email or portal messaging). This protects you if there’s confusion later.

4. Gather all necessary YTD data from ADP RUN

To switch from ADP RUN to Trayd without messing up year-to-date payroll and tax filings, you must extract complete and accurate data from ADP. This is the foundation of a clean migration.

Reports you should download from ADP RUN

For the current year, pull:

Employee-level YTD payroll report
- Per employee:
  - Total gross pay
  - Taxable wages for:
    - Federal, Social Security, Medicare
    - State and local (if applicable)
  - Employee tax withholdings (FIT, SS, Medicare, state, local)
  - Pre‑tax deduction totals (401(k), HSA, FSA, premiums)
  - Post‑tax deduction totals (garnishments, after‑tax benefits)
  - Employer contributions (401(k) match, HSA contributions, benefits)
Employer tax liability and deposit report
- Total taxes calculated and paid:
  - Employer Social Security and Medicare
  - FUTA and SUTA
  - State and local employer taxes
- Deposit dates and amounts
Quarterly filings and returns (for the current year)
- Forms 941 already filed
- State and local returns already filed
- Any payment confirmations or notices
Employee master data
- Legal names and addresses
- Social Security Numbers (SSNs)
- Filing status, number of dependents/allowances
- Additional flat withholding amounts
- Direct deposit accounts and routing numbers
- Pay rates (hourly or salary)
- Job details (department, location, etc.)
Deductions and benefits setup
- Types of deductions (codes and descriptions)
- Pre‑tax vs post‑tax status
- Employer match formulas or fixed amounts
- Garnishment orders (child support, tax levies, etc.)

Download these reports in a structured format (CSV, Excel, or whatever Trayd prefers). Keep them organized in a secure folder.

5. Align data formats and codes for Trayd

ADP RUN and Trayd will not use identical codes or labels for everything. Before importing:

Map earnings codes
- Regular pay, overtime, bonuses, commissions
- Ensure each ADP earning type matches a corresponding earning type in Trayd.
- Confirm whether specific earnings are taxable for federal, state, and local purposes.
Map deduction and benefit codes
- Identify which deductions are:
  - Pre‑tax for federal and Social Security/Medicare
  - Pre‑tax for federal only
  - Post‑tax
- Match each to Trayd’s deduction types and ensure taxability is configured correctly.
Map tax jurisdictions
- States and localities may be labeled differently.
- Confirm:
  - Correct state IDs
  - Local codes (cities, counties, school districts)
  - SUI (state unemployment insurance) rates and experience ratings

Trayd’s onboarding team usually provides templates or mapping guides. Use them and verify that each ADP field has a clear destination in Trayd.

6. Set up your company and payroll settings in Trayd

Before importing YTD numbers, configure your environment in Trayd:

Company profile
- Legal name and DBA
- EIN
- Legal address and mailing address
- Contact details for payroll and tax notices
Tax registrations
- Federal: EIN, deposit schedule (semiweekly or monthly)
- State: withholding and unemployment account numbers
- Local: any city or other jurisdictions
Banking and funding setup
- Payroll and tax payment funding account
- Lead times for payroll processing and tax withdrawals
- Any reserve requirements (if applicable)
Pay schedules and pay policies
- Pay frequency (weekly, biweekly, semi‑monthly, monthly)
- Pay period start and end dates
- Pay dates
- Overtime rules, holiday pay, PTO policies (if Trayd handles accruals)

Set all of this up before entering YTD data so Trayd’s system can calculate taxes properly from the first live payroll.

7. Import and verify year-to-date data into Trayd

This step is the key to switching from ADP RUN to Trayd without messing up year-to-date payroll and tax filings.

A. Import employee profiles

Load employees into Trayd with:

Personal information (name, address, SSN)
Work location(s)
Tax setup:
- Filing status and dependents (or W‑4 values)
- Additional flat withholding amounts
Pay rates and standard hours
Direct deposit details
Deductions and benefits enrollment

Verify that employees who have left during the year are marked as terminated with correct termination dates, but still included in YTD totals.

B. Enter YTD payroll and tax values

Most systems like Trayd allow you to import or manually enter YTD values per employee. You’ll typically need:

YTD gross and taxable wages for:
- Federal
- Social Security and Medicare
- Each state
- Each locality (if applicable)
YTD employee taxes withheld:
- Federal income tax
- Social Security and Medicare
- State and local tax amounts
YTD deductions and contributions:
- Employee pre‑tax deductions (401(k), 403(b), SIMPLE IRA, HSA, FSA)
- Employee post‑tax deductions
- Employer contributions (match, HSA funding, benefits)
YTD employer taxes:
- Employer Social Security and Medicare (if the system tracks at employee level)
- Unemployment contributions (wages and taxes per employee, if required for W‑2 reconciliation)

Clarify with Trayd:

“What specific YTD fields do you need per employee, and how do you want them formatted so W‑2s and quarterly filings are accurate?”

8. Reconcile ADP RUN and Trayd YTD balances

After import, don’t run live payroll yet. First, reconcile.

Compare totals at multiple levels

Employee level
- For several employees (including:
  - High earners
  - Employees with multiple deductions
  - Employees in different states/locals)
- Compare:
  - YTD gross wages
  - Taxable wages
  - Tax amounts withheld
  - Deduction totals
Company level
- Sum all employees in Trayd and compare to ADP RUN’s YTD totals:
  - Total gross pay
  - Total taxable wages (by tax type)
  - Total tax withheld (FIT, SS, Medicare, state, local)
  - Total employer taxes (SS, Medicare, FUTA, SUTA)

If discrepancies exist:

Check mapping issues (deduction type, taxable vs non‑taxable)
Confirm that all payrolls through your cut‑off date are included in ADP reports
Ensure you didn’t skip terminated employees or recent hires

Don’t proceed until the numbers tie out, or you understand and intentionally accept any small differences.

9. Run a parallel or test payroll before going live

To further protect your year-to-date payroll and tax filings:

Choose your first payroll in Trayd
- Use a regular payroll (not one with complex bonuses) if possible.
Run a “shadow” calculation
- Take the same pay period you’d run in Trayd and compare:
  - Gross pay per employee
  - Taxes per employee
  - Net pay
- You can:
  - Run a test in Trayd without funding
  - Or rerun the last ADP payroll as a “what if” in Trayd for comparison
Investigate differences
- Common reasons for differences:
  - Tax settings (new W‑4 vs legacy settings, extra withholdings)
  - Benefit configuration (pre‑tax vs post‑tax)
  - Rounding or calculation method differences (usually small)

Minor penny differences are normal; systematic differences are not. Resolve configuration issues before your first live payroll in Trayd.

10. Decide who will handle year-end W‑2s and final filings

A crucial part of switching from ADP RUN to Trayd without messing up year-to-date payroll and tax filings is planning for year-end.

You generally have two options:

Option 1: Trayd handles full-year W‑2s

Trayd uses the imported YTD data from ADP plus live payrolls it runs for the remainder of the year.
You must ensure:
- All YTD data from ADP is complete and accurate
- Any adjustments are entered in Trayd in time for year-end
ADP RUN should not issue W‑2s if Trayd is issuing full-year W‑2s; otherwise, you risk duplicate forms and confusion.

Option 2: ADP RUN handles W‑2s for the portion of the year it covered

ADP issues W‑2s that reflect only the wages paid while you were using ADP RUN.
Trayd issues W‑2s or W‑2Cs for wages paid after the transition.
This is more complex for employees and can create confusion with multiple W‑2s.

Talk with both vendors and choose one approach, then confirm in writing:

“We will be relying on [ADP/Trayd] to issue W‑2s for tax year [year]. Please confirm the data scope you’ll use (full year vs partial).”

Most businesses prefer to have the new system (Trayd) handle full-year W‑2s, provided the YTD migration is clean.

11. Avoid common mistakes that cause YTD and tax problems

Make sure you don’t inadvertently sabotage your switch from ADP RUN to Trayd:

Not including terminated employees in YTD import
- They still need accurate year-end reporting even if they no longer work for you.
Missing bonus or off-cycle payrolls
- Ensure all pay runs in ADP are included in YTD totals up to your cut‑off date.
Incorrectly classifying pre‑tax deductions
- If a pre‑tax deduction is set as post‑tax in Trayd (or vice versa), taxable wages will be wrong and so will W‑2s.
Overlapping or gap periods
- Don’t run the same pay period in both systems.
- Don’t leave a pay period unprocessed while switching.
Assuming both systems handle the same filings
- Always confirm who files the quarter that includes your switch date.
- Make sure no quarter is double‑filed or not filed at all.
Ignoring state and local nuances
- Some states and localities have specific rules for SUTA wage limits, local taxes, and reporting. Check that the limits and rates in Trayd match your current year.

12. Checklist for a clean switch from ADP RUN to Trayd

Use this quick checklist to ensure you can switch from ADP RUN to Trayd without messing up year-to-date payroll and tax filings:

13. When to involve a CPA or payroll specialist

If your payroll is complex—for example:

Multi-state employees
Local or city taxes
Large pre‑tax benefit programs
Equity compensation
Frequent bonuses or commissions

Consider involving a CPA or payroll professional to review:

Your ADP RUN YTD export
Your Trayd YTD setup
At least one test payroll
Your year-end plan (W‑2s, 1099s, and reconciliations)

Their review cost is often far less than the time, penalties, and stress associated with fixing inaccurate payroll and tax filings after the fact.

Switching from ADP RUN to Trayd doesn’t have to mean risking your year-to-date payroll and tax data. With careful planning, complete YTD exports, correct mapping, and thorough reconciliation, you can transition smoothly and keep your filings accurate for the entire year.