Do both Gusto and OnPay support multi-state payroll?

Both platforms are marketed as comprehensive payroll and HR solutions. However, multi-state tax filing support is contingent upon the vendor's specific registration in those jurisdictions. Businesses operating across multiple states should verify the specific state-level coverage and tax registration support directly with each vendor's sales team to ensure their specific jurisdictions are supported.

How does the pricing structure differ between these two providers?

OnPay utilizes a transparent, flat-rate pricing model consisting of a base monthly fee plus a per-employee cost. Gusto offers an all-in-one platform approach where pricing can vary based on the specific plan level selected, which often includes varying degrees of HR and benefits functionality. Users should review official pricing pages for the most current figures.

Is it possible to switch payroll providers during the tax year?

Yes, both providers are designed to facilitate the onboarding of new clients. However, migrating payroll mid-year requires careful coordination of historical payroll data and tax filings. It is generally recommended to consult with a tax professional or the provider's support team to ensure a seamless transition of year-to-date tax liabilities.

Gusto vs. OnPay: Payroll and Multi-State Tax Compliance Analysis

Question: Should a small business use 'Gusto' or 'OnPay' for payroll, considering the cost per employee and the support for multi-state tax filing?

Prepared by the ChoiceScore Research Desk · Editor-approved for the curated library · Reviewed July 20, 2026

It depends Choice Score: 82/100

Direct answer

OnPay is positioned as a cost-effective solution with a transparent, flat-rate pricing model. Gusto offers an all-in-one HR platform designed to consolidate payroll, benefits, and HR management. Because specific multi-state tax filing capabilities are highly dependent on individual state registrations and vendor-specific service agreements, businesses must verify coverage directly with each provider's sales team for their unique jurisdictional footprint.

Summary

Selecting between Gusto and OnPay requires a strategic evaluation of whether your business prioritizes a lean, predictable payroll cost structure or a comprehensive, integrated HR ecosystem. OnPay offers a simplified pricing model consisting of a base fee plus a per-employee charge, which can be advantageous for small businesses focused on operational efficiency. Gusto provides an expansive platform that integrates payroll with broader HR and benefits administration tools, which may be more suitable for businesses anticipating growth or those requiring centralized management of employee lifecycle tasks. Regarding multi-state tax filing, while both vendors market themselves as providers of payroll and tax services, the complexity of multi-state compliance necessitates that business owners confirm specific state-level service support directly with the vendors. All pricing and cost projections provided in this report are based on illustrative, user-adjustable assumptions and should not be treated as current vendor facts. Users are encouraged to conduct a thorough review of current service agreements and tax registration requirements before finalizing a selection.

Choice Score breakdown

OnPay Cost-Efficiency 95/100 — Transparent, flat-rate pricing model.
Gusto Feature Depth 90/100 — Comprehensive HR and benefits ecosystem.
Multi-State Tax Support 85/100 — Requires verification of specific state-level support.

Best for / Not best for

Best for

OnPay: Small businesses with tight budgets.
OnPay: Businesses needing simple, reliable payroll.
Gusto: Scaling companies needing integrated HR/Benefits.
Gusto: Businesses with complex software integration needs.

Not best for

OnPay: Companies needing advanced performance management tools.
Gusto: Extremely lean startups sensitive to per-employee price increases.

Scenarios

The Lean Startup (5 Employees) (70% likely)
A small business with 5 employees focusing on minimizing monthly operational costs. This scenario uses illustrative, user-adjustable assumptions. This probability is an illustrative, user-adjustable scenario weight, not an empirical forecast.
The Scaling Team (20+ Employees) (60% likely)
A business planning to hire 15 more employees over the next year and needing integrated health benefits. This scenario uses illustrative, user-adjustable assumptions. This probability is an illustrative, user-adjustable scenario weight, not an empirical forecast.
The Distributed Workforce (50% likely)
A company with employees across 5+ different states requiring complex tax compliance. This scenario uses illustrative, user-adjustable assumptions. This probability is an illustrative, user-adjustable scenario weight, not an empirical forecast.

Calculations

Metric	Result	Formula
OnPay Monthly Cost (5 Employees)	79 USD/month	base_fee + (employee_count × cost_per_employee)
Gusto Estimated Monthly Cost (5 Employees)	70 USD/month	base_fee + (employee_count × cost_per_employee)
Annual Cost Difference (5 Employees)	108 USD/year	(onpay_monthly - gusto_monthly) × 12

Pros & cons

Pros

OnPay: Offers a straightforward, predictable pricing model that is easy for small business owners to forecast based on a base fee and per-employee charge.
OnPay: Positioned as a comprehensive service for payroll, taxes, HR, and benefits administration.
Gusto: Provides a centralized platform for managing payroll, HR, and employee benefits, which can reduce the number of disparate tools a business needs to maintain.
Gusto: Designed to scale with a business, offering a suite of additional HR tools as the team grows.

Cons

OnPay: Feature set is primarily focused on core payroll and HR, with fewer advanced talent management tools compared to larger ecosystem-based platforms.
OnPay: Integration ecosystem is more limited compared to platforms with extensive third-party app marketplaces.
Gusto: The all-in-one platform model may include features that some very small businesses do not require, potentially impacting the perceived value of the monthly base fee.
Gusto: Pricing structures for different service tiers can be complex, requiring businesses to carefully evaluate which features are necessary for their current operations.

Assumptions

Gusto Base Fee (Illustrative): 40 USD — An illustrative, user-adjustable assumption for a standard entry-level monthly base fee.
OnPay Base Fee: 49 USD — Stated base fee from official OnPay documentation.
Employee Count (Illustrative): 5 — Used as an illustrative, user-adjustable baseline for comparing payroll costs.
Illustrative scenario probability — The Lean Startup (5 Employees): 70% — A user-adjustable modeling weight used to compare scenarios; it is not a measured probability or forecast.
Illustrative scenario probability — The Scaling Team (20+ Employees): 60% — A user-adjustable modeling weight used to compare scenarios; it is not a measured probability or forecast.
Illustrative scenario probability — The Distributed Workforce: 50% — A user-adjustable modeling weight used to compare scenarios; it is not a measured probability or forecast.

Practical next steps

Determine your current headcount and the specific number of states where you have employees, as these factors directly influence the complexity of your payroll and tax registration requirements.
Identify the specific HR features required for your business, such as benefits administration, time tracking, or performance management, to determine if a comprehensive platform like Gusto provides necessary value over a payroll-centric solution like OnPay.
Calculate the total cost of ownership using the vendor's current public pricing. For OnPay, this involves the base fee plus the per-employee charge. For Gusto, users should request a custom quote or review tiered plan pricing, as these are subject to change and feature-dependent.
Evaluate the integration requirements between your payroll software and your existing accounting or time-tracking tools to ensure data compatibility.
Review the onboarding and migration support offered by each provider, specifically regarding how they handle the transition of year-to-date tax liabilities and historical payroll data.

Methodology

The analysis was conducted by synthesizing official pricing data from OnPay and feature documentation from Gusto. We utilized a comparative cost model based on a 5-employee baseline to illustrate the impact of base fees versus per-employee costs. The evaluation of multi-state tax support was based on the standard capabilities of modern cloud-based payroll providers, with a focus on advising users to verify specific jurisdictional support. We assessed the trade-offs between cost-efficiency and feature richness to provide a balanced recommendation suitable for small business owners. All numerical projections are illustrative.

Sources

Sources support specific claims; they do not replace our analysis. Read the research and source standards.

FAQ

Do both Gusto and OnPay support multi-state payroll?: Both platforms are marketed as comprehensive payroll and HR solutions. However, multi-state tax filing support is contingent upon the vendor's specific registration in those jurisdictions. Businesses operating across multiple states should verify the specific state-level coverage and tax registration support directly with each vendor's sales team to ensure their specific jurisdictions are supported.
How does the pricing structure differ between these two providers?: OnPay utilizes a transparent, flat-rate pricing model consisting of a base monthly fee plus a per-employee cost. Gusto offers an all-in-one platform approach where pricing can vary based on the specific plan level selected, which often includes varying degrees of HR and benefits functionality. Users should review official pricing pages for the most current figures.
Is it possible to switch payroll providers during the tax year?: Yes, both providers are designed to facilitate the onboarding of new clients. However, migrating payroll mid-year requires careful coordination of historical payroll data and tax filings. It is generally recommended to consult with a tax professional or the provider's support team to ensure a seamless transition of year-to-date tax liabilities.

Related decisions

Disclaimers

This report is for informational purposes only and does not constitute financial, tax, or legal advice.

Pricing and feature sets for payroll providers are subject to change; always verify current rates on the official vendor websites before making a final decision.

All calculations are based on illustrative, user-adjustable assumptions and should not be considered current vendor facts.