15 Questions to Ask a Payroll Provider About Setup, Onboarding, and Implementation
Before you sign with a payroll provider, ask 15 questions about setup timeline and go-live date, data migration, who you will work with, validation and parallel runs, training, and tax authorization, and get each answer in writing. Because you generally stay the employer and stay responsible to the IRS, each answer should name who does the work.
You generally stay responsible when a provider does the setup
A managed payroll service or payroll service provider can prepare, file, deposit, and process on your behalf, but you stay the employer and generally stay responsible to the IRS. IRS guidance on outsourcing payroll duties says the employer is the responsible party for federal tax deposits and payments, and penalties and interest can land on the employer’s account if a third party fails to pay. IRS Publication 15 states that a payroll service provider “isn’t liable as either an employer or an agent of the employer” for employment taxes. The Internal Revenue Manual says a contract cannot release an employer from its responsibility to withhold, report, and pay employment taxes. The General Instructions for Forms W-2 and W-3 add that using a third-party provider does not relieve the employer of responsibility for furnishing and filing Forms W-2 correctly and on time.
That is why the implementation questions worth asking are about who does each task, in writing, and what you can verify yourself. Who does the work is also a choice, since some employers run payroll themselves in a platform while others have specialists run it, and you stay the employer either way. These 15 questions, in six groups, form an implementation checklist for owners, HR leaders, and payroll administrators at growing small and mid-sized employers, including those switching payroll providers.
Questions about setup timeline and go-live date
A setup timeline depends on your headcount, states, pay schedules, and pay complexity.
1. Can you give us a written timeline for our headcount, states, pay schedules, and pay complexity, with a first live pay date and named milestones?
Look for a plan listing each milestone, its owner, and what you must deliver by when, tied to a calendar date for the first live payroll.
2. What is the latest we can start and still hit our target go-live date, and which filing dates does the plan work around?
As of October 2026, Form 941 for the third quarter of 2026 is due November 2, 2026, or November 10, 2026 if all deposits were made on time, per the Form 941 instructions. The fourth-quarter return is due February 1, 2027, or February 10, 2027 on the same condition, per the IRS employment tax due dates. The 2026 Forms W-2 and W-3 and employee copies of Form W-2 are also due February 1, 2027, so ask where those dates sit in the plan.
3. Is our go-live date written into the contract, and what is the written plan if it slips past a payroll deadline?
A strong answer says whether the date is a commitment or an estimate, and who acts if a pay date is at risk.
Questions about data migration and historical records
Historical payroll data includes year-to-date wages, tax withholdings, deductions, and active withholding orders.
4. Who migrates our historical payroll data, your team or ours, in what format must our records arrive, and how do active withholding orders such as child support carry over?
The answer should name the owner and the file format. Employers must honor valid child support withholding orders and, per HHS Office of Child Support Enforcement, face penalties in every state if they do not withhold and send payments as ordered.
5. What happens if our records are incomplete or inconsistent, and how do we get our own records back out of your system?
Ask for the cleanup steps, who performs them, and the export you receive. The IRS says to keep employment tax records at least four years, and DOL Fact Sheet #21 says FLSA payroll records must be kept at least three years.
6. How do you carry year-to-date wages, taxes, and deductions over if we switch mid-year?
Form W-2 reports wages paid during the calendar year, per the W-2 and W-3 instructions, and employee social security withholding stops at the 2026 wage base of $184,500, per IRS Publication 15 (as of October 2026). It follows that a new provider needs your year-to-date wages and taxes to apply that limit and to support accurate Forms W-2. Get the reconciliation steps in writing.
Questions about who you will talk to during and after setup
Support during setup and support after go-live are separate arrangements, so ask about both.
7. Will we have a named implementation contact or a general queue, how many implementations does that person run at once, and who covers if that person leaves mid-implementation?
A clear written answer names a person or role, states the workload, and names a backup.
8. Do we keep that contact after go-live or move to a general support line, and how do we reach someone near a payroll deadline?
Get the post-go-live path in writing, including the channel to use on a pay date and who answers. This tells you whether the person who learned your setup stays reachable.
Questions about validation and parallel payroll runs
A parallel payroll run processes payroll in your current system and the new one for the same pay period, so you can compare results before the new system becomes the system of record.
9. Do you support a parallel payroll run, and is it included in the implementation fee or priced separately?
Expect a yes or no, the number of pay periods covered, and the fee in writing. If the answer is no, ask what the provider does to compare results instead.
10. What do you validate before authorizing our first live payroll, and will you share that checklist in writing?
A complete checklist covers tax configuration, direct deposit tests, deductions and withholding orders, and year-to-date balances.
11. How do you correct errors found after the first live payroll, who does the correcting, and is there a fee?
Ask who fixes the error, in what timeframe, and which fee schedule applies, and ask the same about off-cycle runs.
Questions about training and what stays on your team
Implementation ends, but payroll recurs every pay period, so ask what stays with your team.
12. What training do our administrators and managers get, in what format, and does it use our own data?
A good answer lists sessions by role, the format, and who attends. That separates training built around your employees and pay rules from a generic demo.
13. What will our team do each pay period, each quarter, and at year-end, and what does the provider do?
Ask what approving each payroll involves on your side. New hires must be reported to a designated state agency within 20 days of hire, and some states require it sooner, per HHS Office of Child Support Enforcement. The report goes to the state, not the IRS. Furnishing and filing Forms W-2 stays with you even when a provider prepares them. If a provider says “it’s all automated,” ask for the division of labor, task by task, in writing.
Questions about tax accounts and authorization
The IRS recognizes four third-party payroll arrangements, and they differ in whose EIN files and who is liable.
14. Which arrangement do you use for our federal deposits and returns, and under whose EIN do they file?
A payroll service provider prepares returns for you to sign under your EIN. A reporting agent authorized on Form 8655 signs and generally e-files returns and makes deposits under your EIN, and receives duplicate IRS notices. The IRS names the employer as still responsible, and the agent must give you a quarterly written statement saying so, per the Internal Revenue Manual.
A section 3504 agent (Form 2678) files aggregate returns under the agent’s own EIN and is liable along with you, although you still file Form 940 under your own EIN. A certified PEO files aggregate returns under its own EIN.
State unemployment tax registration varies by state, so ask who sets it up and find your agency in the Department of Labor directory. State withholding registration also varies by state, so ask who handles it and check your state revenue agency.
15. How will we verify deposits ourselves, and which address does the IRS have on file for us?
Per IRS outsourcing payroll duties guidance, enrolling in EFTPS gives you your own PIN to verify payments periodically, and EFTPS shows 16 months of payment history. If your business is eligible, an IRS Business Tax Account also shows payment history and notices. Keep the address of record as your own, not the provider’s. The IRS says a red flag should go up the first time a provider misses a payment. If you suspect improper provider activity involving deposits or returns, file Form 14157 and contact the IRS promptly about any bill or notice (IRS).
How to compare the written answers you get back
Use this table to grade the written answers you receive from any provider.
Question area
A clear written answer
An unclear answer
Setup timeline
Named milestones, owners, and a first live pay date
No written timeline
Data migration
A named owner, a file format, and a cleanup process
A template with no owner
Implementation contact
A named person or role, a stated workload, and a backup
A general queue with no named contact
Validation and parallel runs
A shared pre-launch checklist and a written fee schedule for parallel runs and corrections
“We will review everything before you go live”
Tax arrangement
The arrangement and EIN named in writing, plus Form 8655 and the quarterly statement where a reporting agent is used
“We handle your taxes” with no named arrangement
Training
Sessions listed by role and format, using your own data
Training described only as “available”
Ongoing division of labor
A task-by-task list for each pay period, quarter, and year-end
“It’s all automated”
How AsureCentral and AsureWorks work
Asure offers two ways to work on one platform. AsureCentral is a unified payroll and HR platform with one login, for teams that run payroll themselves, and it comes with implementation and support when you buy directly from Asure. AsureWorks is a managed service that runs on AsureCentral, with Asure specialists doing the work. It is a PEO alternative with no co-employment, so you remain the employer, responsible to the IRS for deposits and returns, and keep your own benefits, broker, and retirement choices. Pricing is a custom quote based on employee count, setup (self-service, hybrid, or fully managed), the plan chosen, and the modules added.
To see how the two ways to work fit your business, talk to an Asure expert or read the Payroll & HR page.
Frequently Asked Questions
How long does payroll implementation take?
It depends on your headcount, states, pay schedules, and data readiness, so no single range fits every employer. Ask each provider for a written timeline with named milestones and your first live pay date. Then check it against filing dates near your switch, such as Form 941 and Form W-2 due dates.
What is a parallel payroll run?
A parallel payroll run processes payroll in your current system and the new one for the same pay period so you can compare results before the new system becomes your system of record. Ask each provider whether it supports one, how many pay periods it covers, and whether the implementation fee includes it.
Who is responsible for migrating historical payroll data?
The contract sets the answer, so get in writing who does the work, what format your records must arrive in, and what happens when records are incomplete or inconsistent. If you switch mid-year, also ask how year-to-date wages, taxes, and deductions carry over.
Am I still responsible for payroll taxes if a provider runs my payroll?
Generally, yes. IRS guidance on outsourcing payroll duties says the employer is the responsible party for federal tax deposits and payments, and the Internal Revenue Manual says a contract cannot release an employer from its responsibility to withhold, report, and pay employment taxes. Verify that deposits posted through your own EFTPS account or an IRS Business Tax Account.
What stays with my team after go-live?
Several responsibilities stay with the employer even when a provider performs the task, including making sure new hires are reported to your state agency within 20 days of hire (some states require it sooner), furnishing and filing Forms W-2, and verifying that deposits posted. The rest is a division of labor you set with the provider. Before you sign, ask each provider to write that division of labor down task by task and pay period by pay period.
