How do I set up payroll for my small business?
Start by getting a federal Employer Identification Number if you don’t have one. Apply on the IRS website and you’ll receive it immediately. You need this before registering with Arizona or processing any payroll.
Register with the Arizona Department of Revenue for withholding tax. This gives you the account number for reporting and paying state income tax withheld from employee wages. The registration is online and straightforward. You’ll also need to register with the Arizona Department of Economic Security for unemployment insurance. Arizona requires employers to pay state unemployment tax, and you’ll file quarterly reports through this account.
One thing that makes Arizona simpler than some states is the absence of local income taxes. Phoenix, Scottsdale, Mesa, and other Valley cities don’t impose earnings taxes on wages. You’re dealing with federal and state withholding only, not a patchwork of city-level requirements that change depending on where employees live or work.
Workers’ compensation insurance is required in Arizona before your first employee starts. Get quotes from insurance providers or look into the State Compensation Fund as an option. Rates depend on your industry classification and payroll size. Operating without coverage exposes you to significant liability and penalties.
Choose how you’ll process payroll. Manual calculation is possible if you understand the math and can stay on top of deadlines, but it’s time-consuming and leaves room for error. Payroll software like QuickBooks or Gusto automates calculations, generates tax forms, and handles direct deposits. Payroll system setup and training gets you configured correctly and confident running it yourself. Full-service payroll means someone else handles the entire process while you just approve hours.
For most small businesses, software or full-service payroll is worth the cost. Penalties for late deposits or incorrect withholding add up fast, and the time spent figuring it out is time not spent running your business.
Tax deposits follow federal schedules based on your liability. New employers usually start with monthly deposits. As payroll grows, you may move to semi-weekly deposits. Arizona withholding follows a similar pattern. Miss a deposit deadline and penalties start immediately.
File quarterly reports with the IRS using Form 941 and with Arizona Department of Revenue for state withholding. You’ll also file quarterly unemployment reports with DES. At year end, issue W-2s to employees and file annual reconciliation forms. Report new hires to the Arizona New Hire Reporting Center within 20 days of their start date.
Keep payroll integrated with your small business bookkeeping from day one. Payroll expenses, tax liabilities, and payments all need to flow into your books correctly. When payroll and bookkeeping are disconnected, reconciling becomes a headache and you lose visibility into your true labor costs.
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