Payroll 101: How Payroll Works and How to Get Started

Payroll is one of HR’s most time-consuming responsibilities. And the method makes all the difference—it can take minutes, hours, or days.

Payroll may be routine, but it plays a powerful role in shaping employee experience. Getting it right builds confidence across the organization and frees HR professionals to shift their energy toward engagement, development, and long-term growth.

And the good news is you don’t have to go it alone. If you’re new to the world of compensation, wages, and taxes, then we’re here to help you understand how payroll works and how to run payroll for the first time. Getting your employees paid on time, every time, and in full is the most important thing.

In this guide, we will cover the essentials of running payroll. You will learn what you need to get started, how long payroll really takes, the most common mistakes to avoid, and how to keep employee data secure.

Whether you’re a business owner donning all the hats or an HR professional getting to grips with the basics of payroll, this resource will help you run payroll accurately and with confidence.

Payroll basics: How to get started

From start to finish, setting up and processing payroll follows the same basic plan for most US-based organizations. It begins with getting hold of an employer identification number (EIN) and ends with paychecks arriving in employees’ hands (or bank accounts—the part everyone looks forward to).

What you need first for payroll

• An EIN. The number the federal government uses to identify an organization for  tax purposes.
• State and local ID numbers. Like an EIN, but at the state and local level.
• Employee tax information. W-4 forms for full and part-time employees, W-9s for contract employees.
• A payroll budget and schedule. You’ll need to decide how much you will pay employees, and how often.
• A tax payment schedule. This is when you will pay taxes for the organization.

What you need to process payroll

Once your records and schedules are set, it’s time to process payroll. Here are the core steps.

• You’ll need to calculate gross pay. For hourly employees, this means combining regular hours and overtime and multiplying by standard and overtime payment rates. If you use traditional timesheets that need to be submitted, checked for errors, and approved, this process requires a significant amount of time—though it can be sped up if you have time-tracking software.
• Next, calculate net pay. After calculating federal, state, and local taxes according to employees’ individual withholding information, add insurance, retirement, and any other deductions, and subtract that amount from their gross pay.
• Reserve/distribute deductions. Taxes and other deductions must be either placed in trust for later payment to the appropriate entities or paid immediately, according to your schedule.
• Issue payment. Print checks or issue direct deposits to your employees.

How to ensure compliance

Compliance may sound like a scary word, but follow these steps and all will be okay.

• Keep records. Keeping detailed, complete, and organized records prevents issues of noncompliance in pay and makes an audit go smoother and faster. More on this in our dedicated section below.
• Pay taxes on time. Penalties for late federal tax payments range from 2 to 10 percent, and state and local penalties can be even higher, making scheduled tax payments essential.
• Report changes to the IRS. Regular reporting of hiring, turnover, and other changes that affect your payroll provides a record of your due diligence and reduces the chance that your organization will be audited

How long does payroll take?

When you’re in the thick of it, payroll can feel like a lengthy process. The method you use determines how long payroll takes: Whether you’re a manual processor using all the spreadsheets to work things out, you outsource your payroll to a service provider, or you use dedicated payroll software that allows you to quickly sort payroll in-house.

Anecdotally, HR professionals report spending four to 12 hours per pay period working on payroll. But the actual time it takes to do payroll varies depending on the number of employees and whether they’re hourly or salaried.

The US Chamber of Commerce and the IRS report that 41% of companies surveyed spend 3–10 hours per month solely on payroll taxes. The silver lining is that 46% of companies in that same survey reported spending only 1 to 2 hours a month on payroll taxes with a software platform helping them do payroll in place.

Payroll 101

From record-keeping to avoiding costly payroll mistakes, there’s a lot to keep track of. We get it. You don’t need one more thing to look up when you’re in the middle of running payroll. That’s why we’ve pulled together a helpful list of guides that can help you stay on top of things and hopefully help you optimize your processes

What should you have on a payroll checklist?

Payroll involves dozens of moving parts each pay cycle, and it’s easy to overlook small but important steps. A payroll checklist can help you stay organized, reduce errors, and build confidence that nothing has slipped through the cracks. From employee tax forms to payment schedules, working from a checklist can save time and prevent mistakes.

Here are some of the most important items to include:

• Collect employee tax forms (W-4s for employees, W-9s for contractors) and confirm your EIN and state/local IDs are on file.
• Set and stick to a payroll schedule so employees know when to expect their pay.
• Review hours, overtime, and pay rates to catch discrepancies early.
• Confirm deductions for taxes, benefits, and garnishments before calculating net pay.
• Do a final review for errors before running payroll.

This checklist can be a step-by-step guide that helps you move through payroll smoothly, with fewer surprises along the way.

What are the most common payroll errors?

No one wants the words “errors” and “payroll” in the same sentence, but even experienced professionals can run into mistakes. Some of the most common include:

• Miscalculating pay because of missed hours, overtime, or incorrect rates.
• Missing payroll or tax deadlines, which can lead to fines and erode employee trust.
• Withholding the wrong amounts for taxes or benefits, requiring time-consuming corrections.
• Keeping incomplete or inconsistent payroll records.
• Entering data manually and introducing simple typos that cause big problems.

The good news? Every one of these mistakes is preventable. With a solid payroll guide, reliable time-tracking, and payroll software that automates calculations and reminders, you can keep payroll accurate and compliant.

What do you need to consider with payroll security?

Payroll systems hold some of the most sensitive employee data your organization manages: from employees’ home addresses and banking details to benefit information and tax history. Keeping payroll locked down and your employee data safe is a necessity. Strong payroll security practices help prevent fraud, safeguard personal data, and give your people confidence that their information is safe.

Effective payroll security starts with

• limiting access to only those who need it and requiring strong authentication (like multifactor login) for anyone who does.
• Encrypting sensitive data, both at rest and in transit, ensures it can’t be misused if intercepted.
• Regular audits and monitoring help spot unusual activity before it becomes a problem, while training your team reduces the risk of accidental exposure.

By combining these practices with secure payroll software, you can prevent fraud and safeguard personal information.

How to keep and manage payroll records

Strong payroll security is only half the story; you need to learn about how to store those important payroll records. Keeping thorough payroll records is important for both compliance and peace of mind. If your organization is ever audited, accurate records can save countless hours and headaches.

At a minimum, payroll records should include employee details, completed tax forms (like W-4s and 1099s), pay stubs, benefits documentation, and tax payment confirmations. The IRS requires employers to keep payroll records for at least four years, and some state or industry regulations may require longer.

The best practice is to store records securely in a digital system, limit access to authorized staff, and back up files regularly. By treating payroll records as a critical asset, you’ll save time, reduce risk, and maintain peace of mind. For a full checklist, see our detailed guide to payroll recordkeeping.

Should you opt for paperless payroll?

The short answer is yes! For busy small businesses, the benefits go far beyond saving a few sheets of paper. Eliminating physical checks and forms means you can save money, make the process more efficient, reduce your carbon footprint, and keep track of your payroll anytime, anywhere.

Paperless payroll also makes life easier for employees, who can securely access pay stubs and tax forms online whenever they need them. And because digital systems reduce manual handling, they improve accuracy and keep sensitive data safer than paper files.

For organizations ready to make the switch, paperless payroll offers a clear path to efficiency, security, and long-term savings.

Do you need a dedicated payroll provider?

Running payroll in-house can be manageable at first, but as your team grows, the process becomes more complex. And since running a small business is already tough, especially if you don’t have an HR team to support you, a dedicated payroll provider can take on much of the administrative burden, help you stay compliant, and even automate repetitive tasks. For many small businesses, this trade-off means less stress and more time for strategic work.

Choosing the right provider depends on your organization’s needs. You’ll need to carefully weigh cost, integrations, and the level of support you want. Exploring these options can help you make an informed decision and find a partner who grows with your business.

What are payroll taxes?

Payroll taxes are one of the most critical and complex parts of the process. Employers are responsible for withholding the correct amounts for income tax, Medicare, Social Security, and state and local taxes, as applicable. Staying on top of payroll taxes (and timing of when to pay them!) ensures employees are paid correctly and your organization avoids penalties for underpayment or late filing.

Deadlines vary depending on the tax and jurisdiction, which is why many organizations rely on payroll software to calculate withholdings automatically and send reminders when payments are due. Staying current with payroll taxes not only helps businesses stay in compliance but also builds employee confidence that their pay is being handled responsibly.

Next step: Continue learning

There’s a lot to learn about payroll, and while guides and checklists are a great start, nothing beats learning directly from the experts. A payroll certification could be a great option for small businesses that need to carry out their payroll themselves due to budget constraints.

Certifications such as the Fundamental Payroll Certification (FPC) or Certified Payroll Professional (CPP) are recognized across industries and can help reduce errors, build credibility, and give you confidence that payroll is being managed correctly. Even if you later outsource the process, having certified knowledge on your team helps you better evaluate providers and stay in control.