Best 401(k) Providers for OnPay

Find and compare the best 401(k) providers for OnPay in 2026

Use the comparison tool below to compare the top 401(k) providers for OnPay on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    Guideline Reviews
    Small business owners can have a simple, affordable 401(k). We believe in retirement plans that work. We are on a mission for every small business to offer a 401k. To help participants build a retirement they're excited about. We can sync with top payroll providers, handle plan administration, and offer low-cost mutual fund options. We don't charge additional fees for investments, unlike other 401(k). We are different. We take care of the administration, compliance testing, recordkeeping, and other tasks to make your job easier. Fully packaged. We do all the heavy lifting, from plan administration and employee onboarding to compliance testing, government filing and recordkeeping. These are our features. Predictable pricing. One all-inclusive fee is charged. It starts at $39/mo + $8/mo for each participating employee. There are no additional setup fees or investment fees. Pricing details. Full payroll integration. Fully integrated with top payroll providers, we automatically sync employee data.
  • 2
    Vestwell Reviews
    Tailored investment solutions and plan structures enable you to create a flexible offering suited to your current needs while accommodating future adjustments as your business evolves. Enjoy a contemporary, intuitive experience that enhances user engagement and satisfaction. Our transparent and competitive pricing ensures both you and your employees are fully aware of all costs involved. We offer comprehensive administrative services that cover operations, support, and compliance with 3(38), 3(21), and/or 3(16) regulations. Whether you choose to collaborate with an advisor or go solo, we help you identify the ideal plan for both you and your workforce. Access the vital information necessary to effectively manage and service your plan via our digital, interactive portal. We make it simple for your employees to start saving; just upload your initial payroll and census data, and we’ll take it from there, ensuring a seamless transition into your new saving strategy. With our support, your employees will be on the path to financial security in no time.
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