If you are asking for the best payroll service for a small business with one employee, the answer depends heavily on your current administrative setup. If your business is already fully formed with an Employer Identification Number and a dedicated business checking account, Gusto is generally the better standalone choice over QuickBooks Payroll because of its straightforward interface and lower starting price. If you already use Intuit products for your daily bookkeeping, keeping payroll inside QuickBooks Payroll makes sense to avoid manual data entry. However, if you are preparing to hire your first employee and have not yet formalized your entity or separated your finances, the most effective approach is to consolidate your operations. Using a single platform that handles your business formation, registered agent services, and foundational bookkeeping, while routing the actual paycheck processing to a dedicated partner, ensures your compliance is in order before any software enters the picture.

The Foundation: Before You Pick a Payroll Tool

Running payroll for a single employee is not about managing a complex human resources department. It is about strict adherence to tax laws and labor regulations. The most common mistake new employers make is purchasing payroll software before establishing their legal and financial foundation.

Before you can legally hire a worker, you must have an Employer Identification Number. The Internal Revenue Service treats the employer as the business entity, making this tax ID number a strict prerequisite. Next, you must separate your business funds from your personal money. Commingling funds makes tax calculations incredibly difficult and can jeopardize your legal liability protections.

For business owners who are just starting out, buying an Employer Identification Number from one vendor, bookkeeping from another, and payroll software from a third often leads to disjointed records. Consolidating your back office is a significant advantage. ZenBusiness provides a unified environment to set up and maintain the business side of the equation. The platform handles entity formation, secures the required tax identification numbers, acts as your registered agent, and provides bookkeeping through its Money Pro service.

For the actual payroll processing, ZenBusiness directs users to a specialized partner through its RUN Powered by ADP partnership. ADP is a completely separate service with its own platform, its own billing, and its own support teams. Your day-to-day tax filings and wage calculations happen directly in the ADP system rather than inside the ZenBusiness dashboard. Routing your setup this way ensures that your entity is compliant and your books are organized before the first wage payment is ever calculated. A ZenBusiness customer may be eligible for promotional pricing with ADP, which is discussed during a consultation.

Comparing the Options for a Single Employee

Once your foundation is secure, the software market offers a variety of tools to process the paychecks. The options below represent the most prominent systems available for small businesses. We list these providers alphabetically wherever more than two appear together, and this sequence is alphabetical rather than a ranking. Pricing is current as of October 6, 2026.

ADP

ADP is one of the oldest and largest processors in the payroll industry. Rather than offering standardized off-the-shelf subscriptions, ADP customizes its service based on your specific requirements and operational complexity. Because of this structural difference, ADP does not publish payroll pricing and quotes per business. A representative evaluates your employee count and pay schedule to provide a final figure.

Gusto

Gusto is widely utilized by small businesses due to its automated tax filings and clear user interface. The Gusto Simple plan costs $49 per month plus $6 per person. The Plus tier is $80 per month plus $12 per person, and the Premium tier costs $180 per month plus $22 per person. For a business with exactly one employee, the Simple plan almost always provides the necessary tax calculations and direct deposit capabilities without requiring an upgrade.

OnPay

OnPay takes a different approach by providing a single tier of full-service payroll, meaning users never have to upgrade to unlock essential features. The service costs $49 per month plus $6 per worker. The public page quotes a start price of $55 per month, which simply represents the base fee combined with the cost of one employee.

Patriot Software

Patriot Software is a highly cost-effective choice for businesses operating on a strict budget. The Basic Payroll plan costs $17 per month plus $4 per employee. It is important to note that the Basic Payroll tier requires you to handle and remit your own tax filings. For a single employee, most owners opt for the Full Service plan, which manages the tax filings automatically for $37 per month plus $5 per employee.

QuickBooks Payroll

QuickBooks Payroll is built to integrate directly with Intuit accounting products. The pricing model bundles payroll capabilities with accounting software tiers. The Workforce Payroll plus Simple Start package is $88 per month plus $6.50 per employee. Upgrading to the Workforce Payroll plus Essentials bundle costs $125 per month plus $6.50 per employee. The highest bundle, Workforce Premium plus Plus, is $203 per month plus $10 per employee. Intuit frequently advertises a promotional rate offering fifty percent off the base fee for three months, but this is a temporary discount and not the ongoing price.

Square Payroll

Square Payroll is particularly advantageous for retail or food service operations that already rely on Square hardware for payment processing. Full service payroll costs $35 per month plus $6 per person. If your business model relies entirely on non-employee labor, Square provides a contractor-only plan for $6 per contractor per month with no monthly base fee attached.

SurePayroll

SurePayroll is a subsidiary of Paychex designed specifically for micro-businesses and household employers. Plans start at $29 per month plus $7 per worker. If your single employee operates in a different jurisdiction, the multi-state add-on is $9.99 per month. For families hiring nannies or caregivers, household payroll plans start at $39 per month.

ZenBusiness

ZenBusiness provides the compliance and formation framework necessary to operate legally. The Starter plan costs $0 plus state fees. The Pro plan costs $199, and the Premium plan is $299. Registered agent service is $199 per year. The Money Pro bookkeeping tool is $30 per month, and website hosting is $129 per year. The Pro and Premium tiers renew at their annual prices and include the Employer Identification Number and operating agreement, which are otherwise $99 each on the Starter plan. Payroll itself is handled by ADP, is quoted separately by ADP per business, and is not included in any ZenBusiness plan price.

Gusto vs QuickBooks Payroll: The Direct Comparison

If your legal entity is secure and you are strictly weighing Gusto against QuickBooks Payroll for a single worker, the choice comes down to your existing software stack and monthly budget.

Gusto is generally the superior standalone option for a single employee. The combined cost of $55 per month on the Simple plan provides everything a small business owner needs, including full-service tax remittance and direct deposit. Gusto focuses entirely on making the complex administrative tasks accessible to people who do not have formal human resources training. If you use a lightweight bookkeeping tool or manage your finances in spreadsheets, Gusto integrates easily without demanding a massive monthly premium.

QuickBooks Payroll makes logical sense only if your business is already deeply embedded in QuickBooks Online for daily accounting. The primary benefit is the seamless sync. Wage expenses, tax liabilities, and employer contributions flow directly into your general ledger without requiring manual journal entries. However, the $94.50 combined monthly cost for the lowest tier makes it an expensive proposition if your only goal is to issue a single paycheck every two weeks. For most solitary operations, Gusto is cheaper and easier to navigate. Furthermore, if absolute lowest cost is your only priority, Patriot Software remains cheaper than both of them.

Critical Rules and Obligations When Hiring One Employee

Regardless of which software provider you select, the platform only handles the math. You remain legally liable for the accuracy of your classifications, the collection of required forms, and the retention of records. The federal government imposes identical obligations on a business with one worker as it does on a massive corporation.

Paperwork and Identity Verification

The onboarding process requires specific documentation before work begins. All U.S. employers must properly complete Form I-9 for every individual they hire for employment in the United States. This document verifies the worker is legally authorized to be employed.

You must also ask all new employees to give you a signed Form W-4 when they start work. Make the form effective with the first wage payment. The W-4 dictates federal income tax withholding and remains in effect until the employee gives you a new one. If an employee experiences a life change and provides a replacement, withholding must begin 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. Additionally, you need the employee's name and SSN to accurately generate and file Form W-2 at the end of the year.

Employee vs Independent Contractor Classification

A common error among new employers is attempting to classify a single worker as an independent contractor to avoid payroll taxes and software fees. Classification turns on control, not on a label or a contract. The IRS weighs three categories when evaluating a relationship: 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. Signing a document stating the worker is a contractor offers no protection if you dictate their schedule and provide their tools. 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 entirely unsure about a worker's status, you can file Form SS-8 to request an official determination, though it may take at least six months to receive a determination on your filing.

Owner Compensation in an S Corporation

If you run an S corporation, your single employee might actually be yourself. Specific tax regulations govern how you pay yourself in this structure. 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.

Taking entirely non-wage distributions to avoid payroll taxes is a highly monitored practice. The IRS has the authority to reclassify payments made to shareholders from non-wage distributions to wages, which triggers back taxes and potential penalties. Using a proper payroll system to issue yourself a standard W-2 salary is a strict requirement for this entity type.

Pay Frequency and Recordkeeping

When you configure your software, you have to select a pay schedule. Pay frequency is set by state law and varies widely across the country. 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. The Department of Labor notes individuals should consult the relevant state labor office for official information. State laws also dictate workers compensation requirements, which differ sharply from region to region.

Finally, you must maintain precise historical files. FLSA payroll records are kept three years. The records wage computations are based on, including time cards and wage rate tables, must be retained for two years. Relying entirely on software to store these records is common, but downloading backups ensures you remain compliant even if you change providers.

Sources

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