Most first-time employers think about payroll as one problem: pay the employee the right amount, on time. That’s the visible part, and it’s the smallest part. The moment you put someone on payroll, you’ve taken on a stack of recurring tax and reporting obligations that exist whether or not you ever open the software again after the first run.
This isn’t about any one state’s specific rules, which vary and aren’t covered here. It’s the general shape of what “running payroll” obligates you to do at the federal level, so you know what you’re actually signing up for before the first paycheck goes out.
You’re Withholding Money That Was Never Yours to Keep
Every paycheck you run, you’re required to withhold federal income tax from the employee’s wages, along with their share of Social Security and Medicare tax (together often called FICA). That withheld money isn’t part of your revenue and it was never part of your operating cash, even though it passes through your bank account. It belongs to the employee and to the government, and you’re holding it temporarily before it gets deposited and filed on their behalf.
Treating withheld payroll tax as available cash, even briefly, is one of the fastest ways a small business gets into serious trouble. It’s easy to do by accident when payroll runs through the same account as everything else and nobody’s tracking the withheld portion separately.
The Part That Surprises First-Time Employers: You Owe a Matching Share, Too
Here’s the piece that catches people off guard. Withholding from the employee’s paycheck is only half of Social Security and Medicare. As the employer, you owe a matching share of both, out of your own funds, on top of the employee’s gross wages. If you hire someone at $60,000 a year, your actual cost isn’t $60,000. It’s $60,000 plus your matching FICA share, plus unemployment insurance, plus whatever benefits you’re offering.
This is the number first-time employers most often leave out of their hiring math, because it doesn’t show up anywhere on the offer letter. It shows up on the payroll tax deposit.
Unemployment Insurance Is Also on You
Beyond income tax withholding and FICA, employers are generally responsible for federal unemployment insurance (FUTA), and separately for state unemployment insurance, which every state administers on its own terms. Unlike FICA, unemployment insurance isn’t split with the employee — it’s an employer cost, full stop. Rates and wage bases differ by state and by your claims history, which is exactly why this post isn’t going to state a number. Confirm your specific rate and filing setup with your state’s unemployment agency or your payroll provider before you run your first payroll.
Payroll Isn’t a One-Time Task — It’s a Recurring Filing Schedule
This is the part that turns “we hired someone” into an ongoing obligation instead of a one-time task. Withheld income tax and FICA generally have to be deposited on a regular schedule, and separately reported on a periodic federal filing (commonly Form 941 on a quarterly basis, with an annual federal unemployment filing on Form 940), plus whatever your state requires on its own timeline. The specific deposit frequency depends on the size of your payroll and can change as you grow, and exact current deadlines and thresholds are the kind of detail that shifts and is easy to get wrong from memory.
Specifically: if your total payroll tax liability during the 12-month lookback period (July 1 two years back through June 30 of last year) was $50,000 or less, you deposit monthly, by the 15th of the following month. Above that, you’re on a semiweekly schedule tied to your pay dates. Rack up $100,000 or more in liability on any single day and it’s due the next business day, no matter what your regular schedule says. Form 941 is due the last day of the month after each quarter ends, with a 10-day grace period if every deposit that quarter was made on time. The annual Form 940 for federal unemployment tax is due January 31, or February 10 if you deposited all of it on time.
The useful thing to internalize: payroll isn’t a task you complete when you run the paycheck. It’s a recurring compliance calendar that keeps showing up, pay period after pay period, quarter after quarter, whether or not anyone remembers it’s coming.
Employee or Contractor Isn’t a Style Choice — It’s a Classification With Teeth
Everything above applies to employees, who receive a W-2. It doesn’t apply to independent contractors, who receive a 1099 instead — no withholding, no employer-matched FICA, no unemployment insurance. That difference in obligations is exactly why classifying someone as a contractor when they’re functioning as an employee is a real, expensive risk rather than an administrative preference. Get it wrong and you can be on the hook for back taxes, penalties, and interest on all the withholding and matching taxes you should have been paying the whole time.
We’ve written separately about what 1099 season looks like once your vendor records are messy — worth a read if contractor payments are part of your picture, since that’s a different set of mechanics from what’s above.
Why So Many Small Businesses Hand This Off
Put it all together and “just running payroll” is actually several stacked obligations: withholding correctly every pay period, covering your own matching share, handling unemployment insurance, and staying current on a recurring deposit and filing schedule that doesn’t pause because you’re busy. That’s exactly why most small businesses either run payroll through a provider like Gusto, ADP, or QuickBooks Payroll — which automates the calculations and files most of it for you — or bring in help to get the setup right the first time, before the first paycheck goes out rather than after a mistake surfaces.
If you’re a first-time employer or you’re switching providers because the current setup doesn’t feel trustworthy, payroll migration and setup is built for exactly that: getting the platform configured correctly, your history carried over if you’re switching, and every payroll item mapped cleanly to your books from the first run.
Hiring your first employee, or not sure your current payroll setup is actually right? Book a free consultation and we’ll walk through what your business needs before the first paycheck goes out.