Before you talk to vendors, get clarity on what you actually need. Learn the difference between must-haves and nice-to-haves, and avoid the common mistakes that slow down payroll decisions.
Payroll software salespeople are good at their job. They'll tell you about features that sound impressive but don't solve your actual problem. They'll downplay complexity you know matters. And if you walk in without clear requirements, they'll shape the conversation around what's easiest to sell, not what's easiest to use.
A requirements checklist forces clarity before the sales process starts. It separates your must-haves from your nice-to-haves. It surfaces disagreement within your team early (do we really need multi-state? How important is our accounting software integration?). And it gives you a reference point when a vendor promises something impressive that you don't actually need.
This checklist isn't about being rigid. It's about knowing what you're rigid about, and why.
Before you build your checklist, understand the distinction:
Must-haves are requirements where a vendor's answer of "no" eliminates them from consideration. Examples: "Must handle multi-state withholding for California and Texas," or "Must integrate directly with QuickBooks Online." If a vendor can't do it, you don't move forward.
Preferred requirements are features that would make your life easier but aren't deal-breakers. Examples: "Preferred: employee self-service portal," or "Preferred: reporting we can import to Excel." If a vendor can't do it, you can work around it or accept it as a trade-off.
The key: be honest about which is which. If you list everything as must-have, you're not being selective. If you only have one must-have, you're not being strategic enough.
Common mistake: Treating nice-to-have features as must-haves. This eliminates good vendors unnecessarily and slows your evaluation. Separate what you truly cannot live without from what would just be nice.
Start with the basic payroll work the vendor must handle:
This is where many payroll evaluations fail. Most vendors handle one-state payroll fine. Multi-state is where complexity emerges:
Every vendor should handle these, but confirm:
You need to know what happened with payroll. Specify what reports you actually need:
Specify exactly what needs to connect:
For each integration, ask: is it direct API connection, or manual upload/export?
How will the vendor support you during setup and ongoing?
Don't just look at the headline price:
If your team or employees interact with the system:
Before you build requirements, understand what you're working with. How many employees? What states? What's broken about your current system? What complexity are you managing? Are you currently outsourcing payroll? Requirements look completely different if you're moving from a PEO to in-house payroll vs. just switching between two in-house solutions.
Go through the categories above and identify 5–10 requirements where a "no" answer means you keep looking. Be specific. Not "multi-state support," but "multi-state withholding for California, Texas, and Florida with accurate wage garnishment handling."
Now add 5–10 features that would make your life easier but aren't absolute requirements. These are what you discuss in demos or negotiations.
For each must-have, ask: what happens if a vendor can't do this? Can I work around it? Do I have time to work around it? If the answer is no, keep it as a must-have. If you can manage a workaround, move it to preferred.
Overstating your complexity. Yes, some payroll situations are genuinely complex. But if you're a 15-person business in one state, you probably don't need certified payroll software. Own your actual needs, not hypothetical future ones.
Treating cost as irrelevant. Cost matters. If you're deciding between a vendor that costs $100/month and one that costs $200/month for equivalent features, that's $1200 extra per year. Put a realistic cost range in your requirements.
Not getting team input. If your bookkeeper handles payroll, ask them what's been frustrating. If your HR person manages employee questions, ask what they need. Your must-haves might differ from theirs. That conversation matters.
Forgetting about growth. Ask yourself: if we add 10 more employees, add a state, or increase contractor volume, can this vendor scale? Include growth assumptions in your requirements.
Ignoring integration pain. Manual uploads between systems sounds small until you're doing it three times a week. If you have a high-integration need, weight that in your must-haves.
Once your checklist is built, use it to screen vendors before you spend time on demos. Visit vendor websites, check their feature lists, and make a quick yes/no assessment against your must-haves. A vendor that can't handle multi-state if that's a must-have isn't worth a demo.
For vendors that pass the must-have screen, move to a more detailed conversation. That's when you dig into preferred features, cost details, and implementation approach.
Answer a few questions about your business and we'll generate a custom requirements checklist built around your actual payroll complexity and needs.
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