Many business owners don’t proactively choose to learn about payroll; rather, the need arises naturally as the company grows. While hiring is a sign of success, it also introduces new, complex responsibilities that require your attention. The moment a first hire is made, revenue becomes more consistent. And suddenly, paying someone is no longer optional, nor are the rules that come with it.
What you’ll learn
What you’ll learn
Key takeaways
- Payroll rules apply even if you have just one employee and responsibilities don’t scale down with business size
- Payroll is more than paying wages; it includes registrations, tax deposits, filings, recordkeeping, and deadlines
- Federal, state, and sometimes local payroll requirements apply based on where the employee works
- Many payroll mistakes happen before the first paycheck, often due to missing registrations or setup steps
I’ve worked with sole proprietors and very small businesses for many years, and payroll is one of the areas that causes the most confusion. Not because it’s complicated by design, but mostly because no one explains it clearly at the beginning. Many owners assume payroll is simply writing a check or sending a direct deposit. In reality, payroll is a compliance system, and even the smallest businesses are expected to follow it correctly.
This article will walk you through how payroll actually works, why it matters even if you only have one employee, and what to do to avoid the most common problems I’ve seen in practice.
Why running payroll matters, even if you’re very small
First things first, a common misconception for business owners is that payroll rules are more flexible for small businesses. In reality, they are not. Even if you only have one employee, the government treats you the same way it treats a company with sixty. The difference is scale, not responsibility. Payroll exists for a few key reasons:
- First, it ensures taxes are withheld and paid correctly. Employers are responsible for withholding federal income tax, Social Security, and Medicare from employee wages because, yes, Uncle Sam still expects his share, even when you’re small. In most states, there are additional withholding and employer tax requirements. As a result, it’s really important that these amounts are calculated accurately, deposited on time, and reported properly.
- Second, it creates documentation that protects your business. Payroll records show how much an employee was paid, when they were paid, and what taxes were withheld. If a dispute arises, documentation is often the difference between a resolved issue and a costly problem.
- Third, penalties do not scale down for small employers. I’ve seen businesses with one employee incur penalties that felt disproportionate simply because a tax deposit or filing was missed. The rules apply regardless of size. Significantly, Payroll is more than paying wages. It includes registrations, filings, deposits, recordkeeping, and deadlines that continue long after payday.
Before you pay your first employee, there are a few important setup steps to get right. These are the building blocks of a compliant payroll process.
Steps to follow for a successful payroll
Step One: Getting an EIN
An employer identification number is issued by the IRS and is required if you have employees. One of the most common early mistakes I see is business owners running payroll before obtaining an EIN or using their Social Security number longer than they should. This creates unnecessary cleanup work later. Even if you are a sole proprietor and already have a business bank account, an EIN is needed to:
- File payroll tax forms
- Make federal payroll tax deposits
- Register with state agencies
Takeaway: Get your EIN before you run payroll — fixing it later is far harder than doing it upfront.
Step two: Understanding payroll requirements at the federal, state, and local level
One thing new employers don’t realize is that payroll rules are not the same everywhere. Payroll depends on where your employee works, not just where your business is located.
At the federal level, everyone deals with the same basics. You’re required to withhold federal income tax, Social Security, and Medicare from your employee’s paycheck. Social Security and Medicare are shared taxes, part comes out of the employee’s pay, and part is paid by you as the employer. Where payroll gets more complicated is at the state level.
Most states require employers to pay state unemployment insurance. This is an employer-only tax and usually requires registering with a state agency before you run payroll. Some states also have state disability insurance and paid family and medical leave programs. These may require payroll deductions from employees, employer contributions, or both, depending on the state.
In some states, employers are also required to register for state-run retirement programs if they don’t already offer a retirement plan. On top of that, states have their own registration, reporting, and recordkeeping rules, including new hire reporting.
“Here’s the key point: some of these registrations must be completed before you issue your first paycheck. Paying an employee first and registering later is one of the most common payroll mistakes I see.”
— Tiffany Gonzalez, CPA and OnPay contributor
Payroll is never just federal. It’s federal, state, and sometimes local and knowing that upfront saves a lot of cleanup later.
Takeaway: Payroll rules follow where your employee works, not just where your business is located.
Step three: Collecting required employee paperwork
Before payroll can run correctly, certain forms must be completed and retained. First of all there’s form W-4, it determines how much federal income tax is withheld from wages. Then there’s form I-9, which verifies employment eligibility. Employers are responsible for proper completion and retention. Next, new hire reporting, most states require employers to report new hires within a specific timeframe. Meanwhile direct deposit authorization, it’s important to know that If paying electronically, written authorization is required.
Takeaway: Incomplete or missing forms can create compliance issues before the first paycheck is even issued.
Step four: Choosing a pay schedule
Some states limit which options are allowed. Keep in mind that once you have chosen a schedule, consistency is important. Late or irregular payments can trigger wage complaints, even when the amounts are correct. Employers must choose how often employees are paid:
- Weekly
- Bi-weekly
- Semi-monthly
- Monthly
Remember, clear communication up front helps avoid problems later. The takeaway is that once you choose a pay schedule, consistency matters as much as accuracy.
Step five: Deciding how payroll will be run
In my experience, I have seen many businesses often start manually and move to software after their first compliance scare. Small businesses typically handle payroll in one of four ways:
First, we have manual payroll, sometimes using spreadsheets is inexpensive but risky. Calculations, deadlines, and filings must all be tracked manually. On the other hand, there’s payroll software which is in charge of automating calculations, filings, and reminders. Many very small businesses choose software after realizing how much time payroll consumes.
You could also use a payroll service provider, a third party that processes payroll and handles filings. As well as working with an accountant, CPA, or bookkeeper helps provide oversight and guidance, especially when payroll is new or the business is growing.
Takeaway: How you run payroll matters less than having a system you can follow every single time.
Step six: Calculating wages, taxes, and deductions
Let’s break down the essentials of payroll to ensure your numbers stay accurate.
“It all starts with understanding the difference between gross pay, which is an employee’s total earnings, and net pay, the actual amount they take home after withholdings like federal income tax, Social Security, Medicare, and any applicable state or local taxes.”
— Tiffany Gonzalez, CPA and OnPay contributor
On the flip side, as an employer, you’re responsible for your own share of Social Security and Medicare, plus federal and state unemployment taxes. These calculations are often the biggest source of errors, and even a tiny mistake can compound quickly, especially when tax rates shift or you’re balancing multiple pay periods, so getting the foundation right is key.
Takeaway: Small calculation errors compound quickly, especially when tax rates or pay periods change.
Step seven: Running payroll and paying the employee
Once payday arrives, your responsibilities go beyond just hitting “send” on those direct deposits.
- To keep everything compliant, first, you submit payroll. That means you’re telling your payroll system or your records if you’re doing this manually, how many hours were worked, what the pay rate is, and whether anything changed for that pay period.
- Once payroll is submitted, the system calculates wages, taxes, and withholdings. At that point, those numbers become official.
- Next is paying the employee, usually by direct deposit or check. With direct deposit, the money doesn’t move instantly. You typically have to submit payroll a few days before payday so the funds can clear on time. With paper checks, you’re responsible for making sure the check is issued and available to the employee on the actual pay date.
- Then there are payday timing rules, and this is where employers sometimes get tripped up. States have rules about how often employees must be paid and how quickly they must receive wages after a pay period ends. Paying late, even by a day, can create compliance issues, even if the amount is correct.
“Finally, you need to keep basic payroll records. That includes pay stubs, payroll summaries, proof of payment, and tax reports. These records matter if there’s ever a question about pay, taxes, or compliance. Payroll is one of those areas where good records protect the employer.”
— Tiffany Gonzalez, CPA and small business coach
Takeaway: Submitting payroll late can cause compliance problems even when the pay amount is correct.
Step eight: What happens after payroll runs
It’s a common mistake for new employers to underestimate the workload, but the truth is that payroll is an ongoing cycle that continues long after the paychecks are issued. Once the pay period ends, you are responsible for making payroll tax deposits, filing quarterly tax returns (like Form 941), and handling annual forms such as W-2s and W-3s.
On top of those filings, you must continue to maintain all payroll records for the legally required periods to stay protected. Staying on top of these post-payday tasks is what separates a smooth operation from a stressful tax season.
Takeaway: Payroll doesn’t end on payday — deposits, filings, and records are where most issues appear.
That’s a lot to manage, especially when you’re only paying one employee. The table below summarizes the key payroll responsibilities and why they can’t be overlooked.
| What to do | What it involves | Why it matters |
| Employee registration | Getting an EIN and registering with state agencies | Required before payroll runs to avoid penalties |
| Withholding taxes | Federal income tax, Social Security, Medicare | Ensures taxes are calculated and paid correctly |
| Employer payroll taxes | Employer share of Social Security, Medicare, unemployment | These are your responsibility, not the employee’s |
| Pay frequency compliance | Paying on an allowed and consistent schedule | Late or irregular pay can trigger wage complaints |
| Tax deposits & filings | Deposits, Form 941, W-2s, state filings | Missing deadlines leads to penalties, regardless of size |
| Recordkeeping | Pay stubs, reports, proof of payment | Protects you if questions or disputes arise |
Do I need payroll software for one employee?
While it’s possible to run payroll without third-party tools, many very small businesses still choose payroll software because it reduces errors. The math is handled for you, tax rates are updated automatically, and you’re less likely to under- or over-withhold. That alone prevents a lot of problems.
It also saves time. Payroll is not just paying someone, it’s calculating taxes, tracking deadlines, and filing forms. Software handles much of that in the background.
And most importantly, it provides compliance reminders. Missed tax deposits and late filings are some of the most common issues I see with small employers, and software helps prevent that.
In my experience, what employers usually get right is paying their employee on time. What they get wrong is everything around it, like paying someone before registering with the state, forgetting employer payroll taxes, or missing filing deadlines.
Simple tools for smaller teams
“OnPay is simple to use and has been a great fit for my business. It makes so much sense, especially for start-ups and nonprofits. As a small organization that only needs to pay one employee, the tools are easy to set up and navigate.”
— Amber T. Harris, Share Peace and Rekindle Kindness, Inc.
I also see misclassification issues, especially when someone should be an employee but is treated like a contractor, and payroll tasks becoming inconsistent because there’s no system in place.
You can run payroll without software, but you need to be extremely organized. Most very small businesses choose software because it gives them structure, reduces risk, and takes payroll off their mental load.
Getting payroll right from the start
Payroll does not require perfection, but it does require consistency and planning. Business owners do not need to become payroll experts. They do need a reliable process, whether that means using software, outsourcing, or working with a professional. When payroll is set up correctly from day one, it becomes routine. When it isn’t, it often becomes expensive. Taking the time to build a system early is one of the simplest ways to protect a growing business.
Take a tour to see how easy payroll can be.
Tiffany C. Gonzalez, CPA, is a proud Miami native and thought leader in the accounting world. She earned her Bachelor’s degree in Accounting from the University of Miami and a Master of Science in Taxation from Florida International University before becoming a licensed CPA in Florida.