Hiring a Payroll Manager vs. Outsourcing: Full Cost Comparison

When a company starts thinking about managed payroll, the conversation usually goes one direction fast: "It's cheaper to just keep someone in-house."

That assumption is almost always wrong. Not because in-house payroll is badly run -- but because the salary is never the full cost, and almost no one does the math on everything else.

This page does that math. If you're deciding between hiring a payroll manager and outsourcing to a managed service, here's every number you need.

At a Glance: In-House vs. Managed Payroll

The Real Cost of an In-House Payroll Manager

The salary is the number that shows up in the budget. Here's what doesn't.

1. Benefits and employer overhead

Every employee costs 25–30% above their base salary in employer-side costs: health insurance, employer payroll taxes (FICA, FUTA, SUTA), 401(k) match, PTO accrual, and any other benefits you offer. On an $80,000 salary, that's $20,000–$24,000 in additional annual cost before they process a single payroll run.

2. Payroll error rate

The American Payroll Association estimates the average in-house payroll error rate at 1–8%. On a $3.5 million annual payroll (50 employees at $70K average), a 1% error rate is $35,000 in annual mistakes -- underpayments, overpayments, missed deductions, incorrect tax withholding. These errors require correction cycles, sometimes amended filings, and occasionally penalties. A managed payroll provider with automated compliance validation runs error rates well below 0.5%.

3. Employee question time

This is the hidden cost almost no one measures. For a 50-person company, payroll questions from employees -- "why is my check short?", "can you resend my W-2?", "I changed my direct deposit, did it go through?" -- consume between 15 and 25 hours of HR or operations time every month. That's time that comes from somewhere else in your business. In managed payroll, those questions route to the provider.

4. Replacement cost when they leave

Payroll professionals leave. When they do, you're looking at 3–4 months of recruiting, a 15–30% salary premium to replace them in a competitive market, and a transition period where payroll knowledge lives partially in someone's head and partially on their way out the door. The Society for Human Resource Management estimates replacement cost at 50–200% of annual salary. For a $75,000 payroll manager, that's $37,500–$150,000 per replacement event.

5. Compliance liability

When your in-house payroll manager makes a compliance mistake -- misclassifying an employee, missing a state filing deadline, incorrectly calculating overtime under new FLSA rules -- the liability is yours. With a managed payroll provider, compliance errors are the provider's responsibility, and reputable providers carry the liability.

What Managed Payroll Actually Costs

BEG's managed payroll service is priced at a flat per-employee-per-month (PEPM) rate:

• $25/PEPM -- if you stay on your existing payroll system (we run it for you)
• $45/PEPM -- if you move to BEG's isolved account (includes the software)

For a 50-person company, that's $1,250–$2,250/month, or $15,000–$27,000/year, all-inclusive: payroll processing, tax filings, year-end W-2s and 1099s, compliance monitoring, and employee question handling.

That price doesn't change when your payroll manager has a busy week. It doesn't increase when there's a compliance update. It scales linearly with headcount -- add 10 employees, add $250–$450/month.

When In-House Payroll Makes More Sense

Managed payroll isn't the right answer for every company. Here's when hiring in-house probably wins:

• You have 300+ employees -- at scale, a dedicated payroll team is often more cost-effective than per-employee pricing
• Your payroll is highly custom -- complex commission structures, equity compensation, or industry-specific union rules that require constant manual oversight
• You need payroll embedded in broader HR operations -- if payroll is deeply integrated with benefits administration and you have a full HR team, the handoff overhead may outweigh the savings
• You're a public company -- the reporting requirements and internal controls at public-company scale usually justify dedicated staff

If your company is between 20 and 200 employees and payroll is largely standard (salary, hourly, some commissions), managed payroll almost always beats in-house on total cost.

Side-by-Side: Three Company Sizes

In-house true cost includes salary, benefits, error correction, software, and prorated replacement cost. BEG pricing at $25–$45/PEPM all-inclusive.

The Questions Worth Asking Before You Decide

Before you make this decision, get honest answers to these:

1. What is your current payroll manager's total annual cost -- salary, benefits, and overhead combined?
2. How many hours per month does your HR or operations team spend answering payroll questions?
3. When your payroll manager is on vacation or sick, what happens to payroll?
4. How many payroll errors have required correction in the last 12 months?
5. If your payroll manager left tomorrow, how long would it take to replace them?

Most companies that do this exercise find the in-house number is 50–80% higher than they initially estimated. The managed payroll number is almost always lower.

Ready to hand payroll off? See BEG Managed Payroll.