Daperis CPAHow to Set Up Payroll for Your Small Business
The first payroll run trips up more new employers than almost anything else in year one, and it's usually not because the concept is hard. It's because it's a sequence: registrations before software, classification before job offers, a checklist before the first check goes out. Skip a step, and you're fixing it retroactively, often with a penalty attached.
Step One: Get Registered Before You Hire Anyone
You need a federal EIN, free directly from the IRS, before you can run payroll at all. Then you register as an employer with your state, in New York that's the Department of Labor for unemployment insurance and the Department of Taxation and Finance for withholding. Depending on your industry, you may also need workers' compensation and disability insurance in place before your first employee's first day.
Do this before you extend a job offer with a start date attached, not the week payroll's due. State registrations can take days to process, and running payroll before they're active creates a mess you'll be untangling later, usually at the worst possible time.
Step Two: Classify the Worker Correctly, First
Before anything else, decide whether the person is genuinely an employee or an independent contractor, and this isn't a preference, it's determined by the facts of the working relationship: how much control you have over how, when, and where the work gets done, whether they work for other clients too, who provides the tools and equipment. Misclassifying an employee as a contractor to avoid payroll taxes is one of the most common, and most expensive, mistakes a new employer makes, and both the IRS and state labor departments actively look for it. This is not a hill worth dying on.
Step Three: Choose a Payroll Provider
You can run payroll manually, but almost nobody should past a single employee. A payroll provider handles the actual tax withholding calculations, files the required quarterly and annual payroll tax returns, and generates pay stubs and year-end W-2s automatically. We recommend clients run payroll through ADP, which handles multi-state complexity well, but the bigger point is this: manual payroll math is exactly where new employers make expensive errors, wrong withholding, missed filing deadlines. Software or a provider isn't optional past your first hire.
Step Four: Set Your Pay Schedule and Get the Paperwork Signed
New York requires a defined, regular pay schedule, and manual workers generally need to be paid weekly. Before the first day worked, get a completed Form W-4 (federal withholding), Form IT-2104 (New York withholding), and Form I-9 (employment eligibility verification) on file for every employee. These aren't optional intake forms, they're required before that person's first paycheck goes out.
Step Five: Run Your First Payroll and Check the Math Yourself
Your first run is the one to actually double-check, not just trust the software blindly: gross pay, correct withholding based on the W-4 and IT-2104 on file, any benefits deductions, and net pay. Confirm the payroll taxes withheld actually get deposited on schedule, not just calculated correctly. This is where a lot of new employers get the calculation right but miss the deposit deadline, which triggers penalties even when the paycheck itself was fine.
The Mistakes That Come Up Again and Again
Misclassifying workers as contractors when they're functionally employees. Missing a state registration because the business operates in more than one state. Treating payroll tax deposits as optional, or "whenever." And not budgeting for the employer's share of payroll taxes, roughly 7.65% on top of gross wages for Social Security and Medicare, plus unemployment insurance, which is a real cost most first-time employers underestimate when they're setting a wage.
Keep It Simple / Key Takeaway 🍕
Payroll isn't hard once it's set up right. It gets hard when the order gets flipped, hiring before registering, running checks before classification is settled, trusting the math without checking it the first time. Get the sequence right once, and every payroll after that is mostly routine. Work with a qualified professional from the beginning and save yourself the stress.
Compliance Checklist for New NY Employers
Registration: Obtain federal EIN; register with NY Dept of Labor (Unemployment) and Dept of Taxation and Finance (Withholding).
Insurance: Secure Workers' Compensation, Disability, and Paid Family Leave. Post mandatory notices in a visible area.
Worker Status: Confirm employee vs. independent contractor status based on work relationship facts.
Onboarding: Collect W-4 (federal), IT-2104 (NY state), and I-9 forms. Ensure I-9 is completed within 3 business days of start.
Payroll: Set up a consistent pay schedule (weekly for manual workers).
Verification: Manually verify your first payroll run (gross pay, withholding, deductions, net pay) and ensure all tax deposits are made on schedule.
Disclaimer: This article is for educational and informational purposes only and is not intended as financial, investment, legal, or tax advice. The author assumes no liability whatsoever in connection with its use. This content is not an exhaustive explanation of any topic, practice or process. You should always seek the advice of a licensed professional before making any accounting, tax, financial, investment or legal decision.