Payday is easy to picture when you are the only worker: money in, money out, done. Then you hire your first employees, and the Friday before their first paycheck you discover that payroll is not one job but a chain of them — registration, paperwork, withholding, deposits, filings — each with its own deadline and its own unwelcome fine for being late. The good news is that the chain runs in a fixed order, and once you have walked it once, every later run is a repeat. This guide lays the whole process out phase by phase, in the order you will actually meet it, ending with the honest choice most small employers make about doing it by hand or paying a modest monthly fee to never think about it again.
Phase 1: Before anyone starts — get the business ready
Payroll begins before the first shift. You need an Employer Identification Number from the IRS if you do not already have one — it is free and it is the number every payroll form will carry. Register with your state as an employer too: most states want you set up for state income tax withholding and for the state unemployment insurance program, and many require new hires to be reported to the state within a set number of days of their start date. Arrange workers’ compensation insurance, which most states require from the first employee. And decide the rhythm now: how often people are paid (weekly and every two weeks are the common choices), which day is payday, and whether hourly staff will track time on paper, an app, or a clock — because payroll can only ever be as accurate as the hours fed into it. If you are still at the hiring step itself, our guide to how to hire your first employee covers the road up to this point. One warning about the rhythm decision: many states set their own rules for how often employees must be paid and how soon after a period ends payday may fall, and a few occupation types have their own stricter rules. Pick a schedule your cash flow can honor in your worst month, not your best — a payday you occasionally struggle to meet is a legal problem, not just an embarrassment — and then check it against your state’s payday requirements before you promise it to anyone.
Phase 2: Paperwork for each new employee
On or before day one, each employee completes two federal forms. The W-4 tells you how much federal income tax to withhold from their pay — it is their form, filled in with their details; your job is to file it and use it, never to complete it for them. The I-9 confirms they are authorized to work in the US, and it has a part you must complete: examining their acceptable documents, in their presence, within the first days of work. Add your state’s withholding form where one exists, a direct deposit authorization if you will pay that way (get bank details in writing, and guard them — payroll files are a prime target for fraud), and an emergency contact. Keep all of it in one employee file. Payroll paperwork feels like admin until the day an auditor, a bank, or a former employee asks for it, at which point it becomes the whole story.
Phase 3: Every pay run — the math in the middle
Each pay period, the same calculation repeats for every employee. Start with gross pay: hours times rate, including overtime — for most hourly workers, hours beyond forty in a week are paid at one and a half times the regular rate under federal law, a rule that catches out many first-time employers who pay a flat “salary” to someone who legally counts as hourly. From gross pay, withhold the employee’s share: federal income tax per the W-4 and the current IRS tables, Social Security at 6.2 percent up to the year’s wage cap, and Medicare at 1.45 percent, plus state and sometimes city taxes. What remains is net pay — the paycheck. Give every employee a pay stub each period showing gross pay, each deduction, and net pay; several states require specific items on it by law, and even where they do not, the stub is the document that answers ninety percent of pay questions before they become disputes. But the employer’s cost does not end there: you match Social Security and Medicare with another 7.65 percent of your own, and you owe unemployment taxes on top. The IRS guide to employment taxes is the reference the whole calculation hangs on; read its overview once, carefully, before your first run.
Phase 4: After payday — deposits and filings
The money you withheld is not yours and it is not the employee’s anymore — it is the government’s, held in trust, and the IRS is extremely serious about receiving it on schedule. Employers deposit withheld taxes plus their matching share on a monthly or semiweekly schedule, assigned based on the size of the payroll; miss it and penalties start quickly and grow. Then come the reports: a quarterly federal return (Form 941) summarizing wages and taxes, an annual federal unemployment return, state equivalents on their own calendars, and at year end a W-2 for every employee plus the summary that goes with them. None of these forms is individually hard. Their collective weight — five or six different deadlines, in different places, some monthly, some quarterly, some annual — is exactly where new employers get caught, because nothing in a busy week reminds you that a quarterly form exists.
Between the phases: the mistakes that actually cost money
Three errors account for most of the pain first-time employers feel, and all three happen between the tidy phases above. The first is misclassification: calling someone an independent contractor — and skipping withholding entirely — when the reality of the working relationship makes them an employee. The test is about control: if you set their hours, direct how the work is done, and provide the tools, the tax authorities usually see an employee whatever the agreement between you says, and reclassification brings back taxes and penalties. Decide status by the facts of the role, not by which is cheaper. The second is late deposits: the withheld money sits in your account looking spendable during a tight week, and spending it — even “borrowing” it until Friday — is the single most serious payroll offence a small business can commit, because that money was never the business’s. Treat the payroll tax balance as if it were already gone. The third is quieter: paying yourself wrong. If your business is a sole proprietorship, you generally cannot put yourself on payroll at all; owners of corporations who work in the business generally must take a reasonable salary through payroll. Owners trip over this in both directions, and it is worth one conversation with an accountant before the first run rather than a correction afterward.
Phase 5: Records, kept like you will be asked for them
Keep every pay stub, timesheet, deposit receipt and filing for at least the years the IRS requires for employment taxes — four years is the commonly cited minimum for those records — in one organized place, backed up. This phase has no deadline and no drama, which is why it gets neglected, and why it matters: the cheapest payroll dispute to settle is the one where you can produce the record in five minutes. The SBA’s guidance on hiring and managing employees is a useful overview of the wider record-keeping and compliance picture that payroll sits inside.
The decision: spreadsheet, software, or a service
You are allowed to run payroll by hand, and for exactly one employee some owners do — briefly. The honest arithmetic looks like this: a payroll service for a tiny team typically costs around forty dollars a month plus a few dollars per employee, and in exchange it calculates the withholding, makes the deposits, files the quarterly and annual forms, and produces the W-2s. Against that, price your own hours across a year of pay runs, deposits and filings — plus the cost of one mistake, since a single late deposit penalty can exceed several months of service fees. The example this guide originally carried still sums it up: an owner who switched to a service at about that price called it the best money she spent, because she stopped thinking about payroll entirely. That is the real product being sold — not arithmetic, which software does anywhere, but the removal of a dozen deadlines from your head. For most first-time employers with more than a couple of staff, or with better uses for their Friday afternoons, that trade wins. Start the process a few weeks before the first payday, follow the phases in order, and payday becomes what it should always have been: the least interesting day of the month.
