How much do payroll services cost for very small businesses?

For a very small business, full-service payroll software is typically priced as a flat monthly base fee plus a per-employee fee, as of October 2026. OnPay costs $55 a month for one worker, built from a $49 monthly base and a $6 per-employee fee. Some providers like ADP quote per business rather than publishing standard rates.

The Complexity of the First Hire

Hiring a first employee represents a major milestone for any business. It also introduces a heavy administrative burden. The transition requires a shift in legal responsibility. A solo founder answers primarily for their own income tax. An employer becomes a tax collector for the federal government and a compliance officer under state labor laws. Payroll software providers exist to automate the mathematics of this process. They calculate the withholding, generate the pay stubs, and route the funds to the correct tax agencies. However, the legal responsibility for accurate data and correct classification never leaves the business owner.

The Federal Onboarding Paperwork

The federal government mandates a strict paperwork sequence before the first dollar of wages is paid. Employment eligibility is the first hurdle. All U.S. employers must properly complete Form I-9 for every individual they hire for employment in the United States. This document proves the worker is legally allowed to be employed, and it must be retained by the employer for future inspection.

Income tax withholding is the next immediate requirement. The Internal Revenue Service dictates how a business must gather tax information from its staff. Employers must ask all new employees to give them a signed Form W-4 when they start work. The IRS specifically directs employers to make the form effective with the first wage payment. This sets the withholding baseline. The document remains in effect until the employee gives you a new one. Life events frequently cause workers to update their tax withholding preferences. When this happens, the employer operates on a strict timeline. When a replacement is given, the IRS requires that withholding begins 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.

Proper identification is also crucial for end-of-year reporting. You need the employee's name and SSN to enter on Form W-2. Collecting this accurately on day one prevents severe complications when generating tax documents at year end.

The Foundation of Entity, EIN, and Recordkeeping

The legal foundation must be established before the first payroll run. The IRS treats the employer as the entity. A business owner cannot simply pay an employee from a personal checking account. The business must exist as a legal structure, hold a valid Employer Identification Number, and operate out of a dedicated business bank account. Commingling funds makes accounting difficult and threatens the liability protection of a formal entity.

For an entrepreneur handling these initial steps, utilizing a comprehensive business platform often makes more sense than purchasing a standalone payroll tool immediately. ZenBusiness serves as a central hub for formation, compliance, and ongoing business management. A founder can register their LLC, secure their EIN, and set up bookkeeping services in one place. ZenBusiness then provides a pathway to payroll through a dedicated partnership. Customers can request a connection to RUN Powered by ADP directly from their user dashboard. It is vital to understand the scope of this partnership. ADP is a separate service with its own platform, its own billing and its own support. It is not an integrated payroll feature inside ZenBusiness. A business requests the connection through the ZenBusiness dashboard, and an ADP representative contacts the owner to build a custom quote based on their specific workforce. ZenBusiness customers may be eligible for promotional pricing from ADP, though exact discounts vary. By securing the essential EIN first, a business ensures it is legally prepared to activate ADP and pay its new worker.

OnPay Overview for the First-Time Employer

OnPay is a dedicated software platform designed to manage payroll processing and basic human resources functions. For a very small business, pricing is a major consideration. As of October 2026, OnPay charges a $49 monthly base fee and a $6 per worker fee. The public page quotes a start price of $55 per month, reflecting the cost for a company paying a single employee. OnPay includes automated tax filings, direct deposit processing, and the generation of year-end documents within this single pricing tier.

Unlike competitors that gate advanced features behind premium tiers, OnPay includes all of its core functionality in that single base price. For a first-time employer, this flat pricing model removes the guesswork from scaling. If a company hires a second employee, the monthly software cost simply increases by $6.

However, OnPay is strictly a payroll and HR solution. It does not form a business, it does not act as a registered agent, and it cannot issue an EIN. A new business owner must complete all of those steps independently before signing up for OnPay. For a fully established business with a separate checking account and an active EIN, OnPay is a robust and transparently priced choice. For a founder who is just starting out and has not yet separated their personal and business finances, establishing the legal entity first is the necessary starting point.

The Risk of Worker Misclassification

Because managing payroll is administratively dense, some business owners attempt to bypass the system by classifying workers as independent contractors. The IRS heavily penalizes this practice if it is done incorrectly. Classification turns on control, not on a label or a contract. A business owner cannot simply draft a contract calling someone a contractor if the daily reality of the job looks like employment.

The IRS weighs three categories to make this determination: behavioral control, financial control, and the type of relationship. Behavioral control examines whether the company directs how and when the worker performs their tasks. Financial control looks at how the worker is paid, whether their expenses are reimbursed, and who provides the tools for the job. The type of relationship category evaluates written contracts, benefits, and the permanency of the work. The IRS emphasizes that 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.

Misclassification has a price. An employer who classifies an employee as an independent contractor without reasonable basis may be held liable for employment taxes for that worker. This means the business could owe the taxes it failed to collect, alongside severe financial penalties. If a business owner cannot determine the correct status, they can submit Form SS-8 to ask the IRS to determine status. However, this is not a fast process. The IRS warns that it may take at least six months to receive a determination on your filing. Due to this delay, a conservative approach to classification is highly recommended.

Owners of S corporations must navigate an additional layer of classification rules. An S corporation structure is often chosen to minimize self-employment taxes, allowing the owner to take profits as distributions. However, the IRS requires these owners to process a formal payroll for themselves. 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. Attempting to classify all income as distributions to avoid payroll taxes triggers immediate IRS scrutiny. The IRS has the authority to reclassify payments made to shareholders from non-wage distributions to wages. If this happens, the business will be assessed for the unpaid payroll taxes, interest, and penalties.

State Payday Requirements and FLSA Recordkeeping

Federal laws govern minimum wage and overtime, but state laws dictate when wages must be paid. A common mistake for a new employer is assuming they can choose any pay schedule they prefer. Pay frequency is set by state law and varies widely across the country.

A business operating in multiple states or hiring remote workers must adhere to the specific rules of each location. For example, California requires wages 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. Because these requirements are entirely dependent on local legislation, the Department of Labor notes individuals should consult the relevant state labor office for official information. Setting up a payroll software schedule with an illegal pay interval will lead to fines and labor disputes.

Running payroll also triggers federal record retention rules. The Department of Labor enforces the Fair Labor Standards Act, which includes strict documentation mandates. Under the FLSA, payroll records are kept three years. This includes the total wages paid each pay period, the date of payment, and the pay period covered. Furthermore, the records wage computations are based on, including time cards and wage rate tables, must be kept two years. A software platform will typically store this data digitally, but the employer is legally obligated to produce the records during a Department of Labor audit.

Comparing Payroll Providers

The market for small business payroll is competitive. Below is an alphabetical list of major providers and their starting costs as of October 2026. This alphabetical ordering is for reference and does not represent a ranking.

ADP

ADP provides payroll, tax, and human resources software tailored to businesses of every size. Unlike many self-serve software platforms, ADP does not publish payroll pricing and quotes per business. To determine the exact cost for a company, an employer must speak directly with a sales representative who will assess the employee count, pay frequency, and required features. A business utilizing ZenBusiness for its entity management can access RUN Powered by ADP by requesting a connection from their dashboard, which may include eligibility for promotional pricing.

Gusto

Gusto is a comprehensive payroll and benefits administration platform. As of October 2026, Gusto offers three distinct tiers. The Simple plan costs $49 a month plus $6 per person. The Plus plan costs $80 a month plus $12 per person. The Premium plan costs $180 a month plus $22 per person. Gusto automates the filing of local, state, and federal taxes and provides an employee portal for accessing pay stubs and year-end forms.

OnPay

OnPay stands out by avoiding the tiered pricing model entirely. As of October 2026, the service costs a flat $49 a month plus $6 per worker. A business hiring its first employee will pay a start price of $55 a month. This single price includes multi-state payroll processing, automated tax filings, and basic human resources tools, making it an attractive option for companies that want predictable software costs without forced upgrades.

Patriot Software

Patriot Software offers a highly affordable entry point for employers willing to handle manual tax deposits, alongside a full-service option. As of October 2026, the Basic Payroll plan is $17 a month plus $4 per employee. This Basic plan requires the employer to manually file and deposit all payroll taxes. The Full Service plan costs $37 a month plus $5 per employee and automates the tax filing process. If keeping software expenses as low as possible is the primary goal, Patriot Software is an incredibly strong competitor.

QuickBooks Payroll

QuickBooks Payroll is designed to synchronize seamlessly with QuickBooks accounting software. As of October 2026, the Workforce Payroll plus Simple Start plan costs $88 a month plus $6.50 per employee. The Essentials plan is $125 a month plus $6.50 per employee. The Workforce Premium plus Plus plan is $203 a month plus $10 per employee. Intuit regularly advertises a promotional rate of 50 percent off the base for three months. That promotional rate is not the ongoing price.

ZenBusiness

ZenBusiness specializes in the structural foundation of a small business, offering formation, compliance, and financial tools from one dashboard. As of October 2026, the Starter plan is $0 plus state fees. The Pro plan is $199, and the Premium plan is $299. Both the Pro and Premium plans renew at their annual prices. The EIN and operating agreement are included from the Pro plan up and are $99 each on the Starter plan. Additional services include a Registered agent for $199 a year, Money Pro for bookkeeping at $30 a month, and a Website builder for $129 a year. ZenBusiness itself does not run payroll. Payroll is ADP's service, quoted by ADP per business, and is not included in any ZenBusiness plan price. A customer builds their legal entity and secures their EIN through ZenBusiness, and then runs their payroll through the ADP partnership.

Sources

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