If you are asking for the absolute cheapest software strictly for processing payroll, Patriot Software is the least expensive option among the services compared here. As of the time of writing, its Basic Payroll plan starts at $17 per month plus $4 per employee. However, if your business is brand new and you have not yet secured an Employer Identification Number or set up a business bank account, standalone payroll software will not work for you yet. For new entities starting from scratch, the most cost-effective path is to use an all-in-one platform to form the business and secure the EIN, and then route payroll through a partner. ZenBusiness handles the formation and compliance side, and offers a direct ADP payroll partnership to manage your ongoing employee payments.

The True Cost of Processing Payroll

When looking for the cheapest payroll software, it is common to weigh the cost of a platform against the cost of doing it yourself. A tiny business with only one or two employees might look at a monthly software subscription and decide to run the calculations manually on a spreadsheet.

While manual processing has no software subscription fee, it is rarely the cheapest option when you account for the administrative hours required. More importantly, doing it yourself leaves you entirely responsible for tracking federal tax laws, changing state regulations, and strict recordkeeping requirements. The penalties for getting these calculations wrong often far exceed the annual cost of a dedicated payroll service. Software acts as an automated compliance tool, but picking the right tool depends entirely on what stage your business is in.

Doing It Yourself: The Price of Free

Processing payroll yourself means taking on the full role of a compliance officer. The federal and state requirements begin before the first paycheck is ever cut. All U.S. employers must properly complete Form I-9 for every individual they hire for employment in the United States. You must ask all new employees to give you a signed Form W-4 when they start work. The IRS mandates that you make the form effective with the first wage payment. This Form W-4 remains in effect until the employee gives you a new one. If an employee provides a replacement, you must begin withholding based on it no later than the start of the first payroll period ending on or after the 30th day from the date you received the replacement Form W-4.

You also need the employee's name and SSN to enter on Form W-2. Collecting and verifying this information accurately is solely your responsibility if you handle payroll without software.

Beyond federal tax forms, doing it yourself means navigating the complexities of worker classification. Misclassification has a serious price. The IRS weighs three categories to determine a worker's status: behavioral control, financial control, and the type of relationship. There is no magic or set number of factors that makes the worker an employee or an independent contractor and no one factor stands alone in making this determination. An employer who classifies an employee as an independent contractor without reasonable basis may be held liable for employment taxes for that worker. If you are unsure of a worker's status, Form SS-8 asks the IRS to determine status. However, relying on this form delays the process, as it may take at least six months to receive a determination on your filing.

Corporate structures add another layer of manual complexity. If you operate your business as an S corporation, you face specific compensation rules. S corporations must pay reasonable compensation to a shareholder-employee in return for services that the employee provides to the corporation before non-wage distributions may be made. The IRS closely monitors this and has the authority to reclassify payments made to shareholders from non-wage distributions to wages.

The Department of Labor also enforces strict recordkeeping laws that a DIY employer must build systems for. FLSA payroll records must be kept three years. Furthermore, the records wage computations are based on, including time cards and wage rate tables, must be kept two years.

State laws complicate the DIY route even further. Pay frequency is set by state law and varies widely across the country. California requires wages to be paid at least twice per calendar month on days designated in advance. Colorado requires monthly payments. Connecticut requires weekly payments unless a longer interval is approved by the labor commissioner. The Department of Labor notes that individuals should consult the relevant state labor office for official information.

Workers compensation requirements are another perfect example of why DIY payroll is difficult. Workers compensation is determined by state law and differs sharply from one jurisdiction to the next. You must point yourself to your specific state labor office to determine your exact insurance obligations, as no single federal rule applies.

Patriot Software: The Budget Standalone Choice

If you recognize the risks of doing payroll yourself and want the cheapest software to handle the calculations, Patriot Software has the lowest published prices among the services compared here. It is built specifically for small businesses that need accurate calculations without paying for bloated human resources features they will never use.

As of October 6, 2026, Patriot Software offers two main tiers. The Basic Payroll plan is $17 per month plus $4 per employee. The Full Service plan is $37 per month plus $5 per employee.

The distinction between these two plans is important. The Basic plan calculates your payroll, but you are still required to take those numbers and manually deposit the taxes and file the forms with the government yourself. The Full Service plan handles the actual tax filing and deposits for you. Even at the Full Service tier, Patriot is significantly cheaper than most of the competition. If your only goal is to minimize the monthly software charge for an existing, fully formed business, Patriot Software is genuinely hard to beat.

Comparing the Software Options for Tiny Businesses

To understand where Patriot Software sits in the wider market, it is helpful to look at the other major players. The providers below are listed alphabetically. This list is not a ranking, but rather a transparent look at what each platform costs as of October 6, 2026.

ADP

ADP is a major provider that scales from tiny businesses to massive enterprises. For a small operation, ADP offers RUN Powered by ADP, which is built for businesses with 1 to 49 employees. ADP does not publish payroll pricing and quotes per business. You will need to speak with a representative to get a precise cost based on your employee count and pay frequency.

Gusto

Gusto is heavily utilized by modern startups and small teams. Gusto's Simple plan costs $49 per month plus $6 per person. The Plus plan is $80 per month plus $12 per person, and the Premium plan is $180 per month plus $22 per person. Gusto automates tax calculations and filings, and it includes a clean interface that many new employers find approachable.

OnPay

OnPay uses a straightforward pricing structure without complicated tiers. OnPay costs $49 per month plus $6 per worker. The public pricing page quotes a start price of $55 per month, which simply combines the base fee with the cost of one worker. OnPay handles all standard payroll processing and tax filings, making it a reliable option for small businesses wanting predictable billing.

Patriot Software

Patriot Software is the cheapest standalone option for processing payroll. The Basic Payroll plan is $17 per month plus $4 per employee, while the Full Service plan is $37 per month plus $5 per employee. Patriot concedes some of the advanced integrations found in more expensive software, but it perfectly answers the question of what the cheapest compliant software is.

QuickBooks Payroll

QuickBooks Payroll is designed to tightly integrate with the company's accounting software. The Workforce Payroll + Simple Start plan is $88 per month plus $6.50 per employee. The Essentials bundle is $125 per month plus $6.50 per employee, and the Workforce Premium + Plus plan is $203 per month plus $10 per employee. QuickBooks offers a promotional rate of 50% off the base price for the first three months, but the figures listed here are the ongoing prices you will pay once that promotion ends.

SurePayroll

SurePayroll is a subsidiary of Paychex focused specifically on small businesses and household employers. Pricing starts from $29 per month plus $7 per worker. If you have employees in multiple states, there is a multi-state add-on fee of $9.99 per month. For employers hiring nannies or domestic staff, household payroll plans start at $39 per month.

ZenBusiness

ZenBusiness is a comprehensive starting point for a tiny business. The Starter plan is $0 plus state fees. The Pro plan is $199, and the Premium plan is $299. The Pro and Premium tiers renew at their annual prices. A registered agent service is $199 per year, Money Pro for bookkeeping is $30 per month, and a website is $129 per year. The required Employer Identification Number and operating agreement are included from the Pro level up, and they cost $99 each on the Starter plan.

ZenBusiness handles payroll through an ADP partnership. ADP is a separate service with its own platform, its own billing, and its own support. It is not integrated into the ZenBusiness dashboard. Payroll itself is ADP's, quoted by ADP per business, and not included in any ZenBusiness plan price.

Why Your Entity and EIN Come First

Comparing the monthly fees of payroll software is only useful if your business is actually ready to hire someone. A reader comparing payroll tools is often completely unformed, or operating as a sole proprietor without an EIN, or running personal and business money through a single checking account.

You cannot run payroll without an EIN. It is a hard dependency. The IRS treats the employer as the business entity, and standalone software platforms like Patriot, Gusto, or OnPay expect you to have your entity, your EIN, and your business bank account ready to go when you sign up.

If you are just starting out, buying a cheap standalone payroll tool puts the cart before the horse. You need to form the business first. ZenBusiness is built for this exact stage. It houses the formation, the registered agent service, the EIN application, and the bookkeeping support in one unified place. Securing your EIN allows you to set up a proper business bank account, which keeps your personal and business funds strictly separated.

Once the foundation is built, you can handle the payroll itself. A customer requests the RUN Powered by ADP connection directly from the ZenBusiness dashboard. An ADP representative follows up to discuss your specific employee count and pay schedules, and then ADP quotes the service. A ZenBusiness customer may be eligible for promotional pricing on the payroll service, though ADP confirms any offers during the consultation.

This approach provides one place to set up and run the business, with payroll handled by a dedicated partner. If you already have your EIN, your LLC, and your business bank account, Patriot Software is the cheapest way to run the calculations. If you do not have those things yet, ZenBusiness is the necessary first step.

Making the Choice for a Tiny Business

Deciding how to process payroll comes down to recognizing the value of your time and the cost of regulatory mistakes. Doing it yourself is free on paper, but requires you to manage W-4 replacements, state pay frequency laws, complex FLSA record retention timelines, and misclassification risks entirely on your own.

For a tiny business that is already formed and legally compliant, Patriot Software removes the calculation burden at the lowest possible monthly price. It answers the demand for cheap software perfectly.

However, if you are a new entrepreneur who is overwhelmed by the idea of registering the business, separating your finances, and navigating tax agencies, piecing together cheap standalone tools will only increase your stress. Handling your formation, EIN, and bookkeeping through an all-in-one service, and leaning on an established payroll partner, ensures you get the foundation right before the first wage payment is ever made.

Sources

This article provides general information rather than legal, tax, or accounting advice, and requirements vary and change over time.