About
Onshore is an AI-native tax platform that automates CPA workflows and helps companies identify, document, and defend R&D tax credits, 179D deductions, and cost-segregation opportunities. It serves businesses at scale—reporting more than 500 companies served—and differentiates itself through continuous tax intelligence, proof-based work, and automation rather than traditional manual tax processes.
Market
Onshore competes in the tax-credit and tax-incentive advisory market, supported by an AI-native software platform for R&D credits, 179D deductions, and cost segregation. It positions itself as an alternative to manual CPA and consulting workflows by using AI agents to analyze company data against the tax code while credentialed professionals validate and defend the claims. Its primary differentiation is verticalized AI and expert review combined with faster delivery—typically 2–3 weeks—and audit-ready documentation with included audit support.
Onshore targets small and mid-sized businesses with technically intensive work, especially agriculture, manufacturing, architecture and engineering, oil and gas, and software-related businesses. Its buyer is typically an owner, CFO, or finance/tax leader seeking R&D credits or property-related tax incentives without the cost and delay of a large accounting firm.
At a Glance
Problem
Onshore addresses the gap between businesses that perform qualifying technical work and the tax incentives they actually claim. R&D tax credits are complex and heavily audited, while traditional studies depend on months of interviews, spreadsheets, manual reviews, inconsistent documentation, and sometimes statistical sampling. That makes the process slow, expensive, uncertain, and burdensome for the technical and finance teams that must supply the evidence. The economics are substantial: Onshore cites more than $200 billion in tax incentives going unclaimed or being misfiled each year, and R&D-credit analysis can sometimes cost more than the credit itself.
The killer use case is a company already designing, testing, improving processes, or developing software—particularly in technology, manufacturing, engineering, agriculture, energy, or oil and gas—that has payroll, general-ledger, and project records but has never claimed an R&D credit or has claimed less than it earned. Onshore turns that existing operational evidence into a defensible claim without requiring the customer to endure a months-long consulting exercise.
Product / Service
Onshore is a technology-enabled tax service combining AI agents, structured data pipelines, machine-learning models, and credentialed tax professionals. Customers provide the records they already maintain; Onshore’s agents analyze activities against the tax code, identify qualifying dollars, and generate the study. A credentialed tax professional then reviews the calculations, verifies the claim, amends returns where applicable, and delivers an audit-ready package with audit support included. The company says R&D studies typically take two to three weeks, versus months for traditional providers, with reported results of roughly 90% faster studies and 30–50% lower client costs.
The delivery model is outcome-oriented rather than a pure self-service software subscription. The initial assessment is free, and when Onshore finds credits worth claiming, its fee is a share of the recovery, so the customer pays only when it saves. The platform’s initial focus is R&D tax credits, but it also supports or is expanding into related incentives such as the 179D deduction and cost-segregation studies, with plans to automate broader U.S. tax and accounting workflows.
Market
Onshore competes in fintech and tax-and-accounting automation, specifically the technology-enabled R&D tax-credit and incentive-services segment. Its alternatives include conventional tax-credit consulting firms and newer software platforms such as TaxCredit.ai, GOAT.tax, and neo.tax, which use software or AI to simplify R&D-credit analysis and documentation. Onshore’s positioning is a hybrid one: automated, data-intensive analysis paired with human tax-professional review and defense, rather than either a fully manual consultancy or an entirely self-service calculator.
The company has clear commercial traction rather than appearing pre-revenue. Onshore says more than 500 companies have used its platform to identify and defend over $600 million in tax incentives across technology, energy, manufacturing, architecture, and agriculture. In February 2026, the formerly named SPRX announced a $31 million Series B led by FPV Ventures, bringing total funding to $46 million; the funding is intended to expand the platform beyond tax credits into additional U.S. tax, accounting, compliance, and reporting workflows. No revenue figure is disclosed in the cited materials, but the customer usage, incentive volume, and institutional financing indicate an operating business with an established customer base.
Founders & Leadership
Funding History
Not publicly disclosed
FPV Ventures
Recent News
Onshore published a plain-English guide explaining the R&D tax credit as money returned to businesses that spend on solving technical problems.
Onshore explained that the One Big Beautiful Bill reopened R&D deductions for 2022–2024 and highlighted the July 6, 2026 deadline for amended claims.
Vertex Holdings reported that Onshore, formerly SPRX, raised a $31 million Series B led by FPV Ventures. The round brought total funding to $46 million and will support expansion into additional U.S. tax and accounting domains.
Onshore announced its rebrand from SPRX and a $31 million Series B led by FPV Ventures, with participation from Vertex Ventures, Restive Ventures, PruVen, and Y Combinator. The company described its AI-native platform for automating tax intelligence and said the funding would support expansion beyond credits and incentives.
The Silicon Valley Post covered Onshore's $31 million Series B and rebrand, describing its platform as connecting payroll, general-ledger, and project-management data to produce audit-ready tax-credit studies. The article said the company plans to expand beyond credits and incentives into other corporate tax workflows.
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Get notified when they postBusiness Model
Onshore appears to generate revenue by providing technology-enabled tax-credit and deduction services to businesses, including R&D credits, 179D deductions, and cost segregation. The available evidence does not specify whether customers pay through subscriptions, per-return fees, contingency fees, or another pricing structure.