What Every Accounting Firm Should Know Before Referring Payroll to an Outside Provider

Most payroll referral arrangements start with a handshake and a good feeling about the person across the table. That works fine right up until it doesn’t. The problems show up a year in, when a firm discovers the provider has been selling their client services the firm also offers, or that walking away takes 90 days and a phone call nobody wants to make.

We’ve been on the provider side of these agreements for years, and we’ve watched accounting firms sign things they hadn’t read closely enough or failed to get in writing. Before you get to the agreement, it helps to understand the real risks of referring your clients to a payroll company, because those risks are what the right terms are meant to protect against. 

This article walks through the seven things worth verifying before you refer your first client, plus the one question you should answer for yourself before any of it matters.

Before the Checklist: Why Aren’t You Doing Payroll Yourself?

Every item below is easier to evaluate once you’ve answered this question. There’s a real difference between a proactive decision and a reactive one.

“I don’t feel like I have the bandwidth to do this well right now” is proactive. You’ve looked at the work, understood what it takes, and concluded your firm is better served focusing elsewhere. “I just don’t want to deal with payroll” is reactive. It’s an aversion, and it tends to produce agreements signed in a hurry by someone who wants the topic to go away.

The distinction matters because it changes what you need from the agreement. A firm that might want payroll in-house someday needs very different terms than a firm that never wants to touch it. If there’s any chance you’ll bring payroll in-house later, that possibility has to be built into the arrangement now, not negotiated after your clients have settled in somewhere else.

7 Things to Verify Before You Sign a Payroll Referral Agreement

Some of these matter more if you’re referring 50 clients than if you’re referring five. Consider them with your own book in mind.

1. What Are Your Outs?

This is the first question to ask about any contract, and it runs in both directions. If you decide the arrangement isn’t working, how do you exit, and what does it cost you? Is the timeline 30 days? Something else? Are there obligations that survive the exit?

Then flip it. If the provider decides they don’t want you as a referral partner anymore, what happens to the clients you already sent them? A provider who can cancel the agreement and then market directly to your referred clients has a very different relationship with you than one who can’t. Know which one you’re signing.

2. What Are You Committing To?

Look for minimums. Are you promising a certain number of referrals, a volume of clients, or a timeline? If commitments exist, make sure you understand them clearly and that they’re achievable with the book you actually have, not the book you hope to have. A commitment you can’t meet is a problem you’ve scheduled for later.

3. Who Owns the Client Relationship?

Firms often get this one wrong, because they assume the answer. You think you’re handing over payroll. The provider may think they’ve been handed a client.

The gap shows up when the provider starts selling your client insurance, retirement options, or financial services. If you offer any of those, you’ve just introduced a competitor to your own client and paid for the privilege with a referral. Ask directly what limitations exist on what the provider can sell to clients you refer to them, and get anything that concerns you in writing.

4. What Are the Service Level Agreements (SLAs)?

Ask what support your client will actually receive, and (again) try to get it in writing. How responsive is the provider expected to be? What happens when your client has a problem during a stressful week? A handshake about “great service” is not an SLA. If support quality matters to you (and it should), then it belongs in the agreement rather than in your memory of a sales conversation.

5. What’s Actually in It for You?

If there’s a revenue share, get specific. How often does it get paid? Which clients does it apply to? What reporting or visibility do you get to confirm it’s being calculated correctly?

If you’re referring 10 clients, you may not care about any of this. If you’re referring 50 or 60, the details add up to real money, and “trust us” stops being an acceptable answer.  It helps to see how a provider actually structures referral revenue share and partner pricing so you know what questions to ask. And make sure to ask for the reporting before you need it.

6. What Does Exclusivity Cost You?

If a provider asks to be your only referral partner, that’s worth putting in writing, and it’s worth pricing. Exclusivity has an opportunity cost of whatever you give up by turning away every other potential partner. That cost is real, and it’s leverage. Use it to negotiate better terms rather than handing it over for free.

7. Which of Your Clients Will They Refuse?

Every payroll company has clients it won’t take. Some won’t offer direct deposit to a business with NSF history. Some will terminate a client who creates too many problems. Some simply don’t work well with certain industries.

Find out where those lines are before you refer anyone. A construction-focused firm partnered with a provider that dislikes construction clients is a bad fit no matter how good the terms look. And when the provider does decline or drop a client, you need to know what happens next. Is there another option for that client, or are they suddenly your problem again?

Why a Handshake Agreement Usually Isn’t Enough

Plenty of referral relationships run on an arms-length handshake, and for a small book that can be good enough. The trouble starts when you’re carrying expectations in your head that were never written down.

If a salesperson tells you they’ll never upsell your clients, that’s a nice thing to hear. It’s also not something the company is bound to, and it probably won’t survive that salesperson’s tenure. If you have stipulations about how this relationship should work, you need an agreement that says so. Handshakes work fine when both sides carry the same assumptions. The risk lies in the assumptions nobody wrote down.

This is a place where providers differ meaningfully. Some assume full liability for the payroll work and commit to complementing your services rather than competing for your clients; others leave both questions vague. That difference is exactly the kind of thing worth pinning down in writing before you sign, no matter who you're considering.

Referring Payroll With Your Eyes Open

None of this is a reason to avoid referring payroll. It’s a reason to spend an afternoon on the agreement before you spend years living inside it.

If you want to know what to check before referring payroll to an outside provider, the seven items outlined above cover the agreement itself: your outs, your commitments, who owns the relationship, service levels, your terms, the cost of exclusivity, and which clients the provider won’t accept. The question underneath all of them is whether you’re referring payroll out on purpose or by default, because that answer determines which terms you actually need.

We’ve spent years on the other side of these agreements, and we’d rather you ask hard questions than sign something you regret. If you want to see how the answers differ between models, our breakdown of the Network Partner and Referral Partner paths shows how client ownership, control, and liability change depending on which route you take, so you can decide what belongs in your agreement before anyone asks for a signature.