Rockerbox FiveFour

Paid#25 of 31 in Payroll Tax Software

Rockerbox FiveFour: A focused platform for multi-state tax registration, tracking, and payroll-system sync. Ranked #25 of 31 in Payroll Tax Software by our editors (5.9/10); pricing: Pricing on request; best for employers managing multi-state tax registrations.

5.9/10★★★☆☆Editor score

Visit Rockerbox

Rockerbox FiveFour5.9 Visit Rockerbox

At a glance

• Editor score
  5.9 / 10
• Pricing
  Pricing on request
• Best for
  Employers managing multi-state tax registrations
• Facts checked
  20 Sep 2026

• Where it wins

  • Registration coverage across 54 U.S. jurisdictions
  • State-specific POA generation with electronic signatures
  • Integrations with Gusto, ADP, and other payroll systems

• Where it doesn't

  • Pricing requires contacting sales
  • Focused on registration rather than full payroll tax filing
  • Does not cover tax remittance or year-end forms

Our verdict on Rockerbox FiveFour

Rockerbox FiveFour is a web-based payroll tax account management platform for employers expanding into new U.S. jurisdictions. It automates state tax registration, prepares state-specific Power of Attorney forms, supports electronic signatures, and keeps registration work in one place. Coverage spans 54 U.S. jurisdictions, including the 50 states, Washington, D.C., Puerto Rico, the U.S. Virgin Islands, and Guam. Employers that need centralized registration workflows and compliance monitoring are the clearest fit.

Pricing is handled through contact sales rather than published plan tiers. The product connects with Gusto, ADP, Paylocity, QuickBooks Payroll, and Rippling, allowing tax credentials and account information to sync with payroll systems. Real-time registration status tracking, secure storage for account IDs and documents, and automated compliance monitoring and alerts add structure after an application is submitted. These capabilities suit teams managing registrations across multiple jurisdictions instead of handling each account separately.

FiveFour has a defined scope: registration, authorization workflows, document management, status visibility, and compliance alerts. It should not be selected as a complete payroll tax filing system, because the product does not verify payroll-return filing, tax remittance, tax-form preparation, reconciliation, or year-end-form capabilities. Employers primarily seeking multi-state account setup and ongoing registration oversight should consider it; those needing a broader filing and payment workflow should choose a product that explicitly covers those functions.

Your product? Our editors can test Rockerbox FiveFour in depth and publish a review, labelled as paid · from $149/mo →

Rockerbox FiveFour pricing

Rockerbox FiveFour fact sheet

Rockerbox FiveFour integrations

Rockerbox FiveFour lists 5 integrations on its own site.

• Gusto
• ADP
• Paylocity
• QuickBooks Payroll
• Rippling

Alternatives to Rockerbox FiveFour

• TaxBanditsA low-cost U.S. payroll tax platform with federal, state, reconciliation, and API workflows.8.9
• Sovos Withholding ComplianceA mature withholding operations platform for complex federal, state and local workflows.8.7
• HMRC Basic PAYE ToolsA focused free option for UK PAYE calculations, filings, payslips and year-end records.8.5

See all Rockerbox FiveFour alternatives →

Featured on iTechGuides

Rockerbox FiveFour is listed in our Payroll Tax Software directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/rockerbox-fivefour/"><img src="https://www.itechguides.com/best/badge/rockerbox-fivefour.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update