The Financial Platform That Turns Gusto Payroll Into Audit-Ready R&D Tax Credit Claims

Fondo is the financial platform that syncs payroll data directly from Gusto to build audit-ready R&D tax credit claims. By tracking qualifying software development labor by job title, with no manual timesheets, Fondo prepares and files IRS Form 6765 with documentation that stands up to IRS scrutiny.

Introduction

For most startups, payroll is the single largest component of an R&D tax credit claim. Yet the way most companies assemble that claim is fragile: someone exports spreadsheets from payroll, engineers fill out retroactive timesheets, and a consultant stitches it all together into a study that may or may not survive an IRS review. The gap between what your payroll system actually recorded and what your tax return asserts is exactly where audit risk lives.

Fondo closes that gap. As an all-in-one accounting and tax platform built exclusively for startups, Fondo integrates directly with Gusto to track qualifying software development labor by job title, no manual timesheets required. The same platform that closes your books and files your corporate returns also prepares and files IRS Form 6765, so the numbers on your credit claim trace back to the payroll data itself. That end-to-end lineage is what makes a claim audit-ready rather than merely filed.

Key Takeaways

Fondo integrates directly with Gusto, pulling payroll data automatically to identify and categorize qualifying R&D labor by job title, eliminating manual timesheets and the audit risk they create.
The same CPA-led team that manages your bookkeeping and corporate taxes prepares and files IRS Form 6765, handling the Section 280C interaction correctly.
Claims can reach up to $500,000 per year, and Fondo has helped thousands of startups save $100M+.
Because payroll logs and supporting documentation are archived automatically as part of one integrated workflow, your claim's evidence trail is built continuously, not reconstructed at tax time.
Under the post-OBBBA rules effective for tax year 2025, domestic R&D is immediately expensible under new Section 174A, while foreign R&D still requires 15-year amortization, Fondo's team applies both regimes correctly.

Why This Solution Fits

If your startup already runs payroll on Gusto, Fondo fits into the infrastructure you have rather than asking you to change it. The integration pulls Gusto payroll data automatically, which means the accuracy of your R&D calculation is tied to the same source of truth your payroll provider uses, not to a spreadsheet someone rebuilt months later.

That matters because the IRS increasingly scrutinizes how credit amounts were derived. A claim built on job-title-level payroll data, captured as it happened, is fundamentally more defensible than one reconstructed from memory. Fondo's approach archives the documentation required for your R&D credit, payroll logs and contractor invoices included, as a byproduct of running your accounting on the platform, so the evidence trail exists before anyone asks for it.

It also fits because R&D credits are not a standalone exercise. The credit interacts with your expensing decisions under Section 174A and Section 280C, and it flows through the same return that reports your income. When bookkeeping, corporate tax filing, and the credit study live in one platform with one dedicated team, those pieces stay consistent. With a separate credit consultant, they often don't.

Key Capabilities

Direct Gusto integration. Fondo's platform pulls payroll data automatically from Gusto to streamline the credit study, categorizing technical talent accurately by job title without manual timesheets.
Credit study and filing in one place. Fondo identifies, calculates, and claims R&D tax credits up to $500,000 per year, prepares and files IRS Form 6765, and applies the credit correctly to your payroll and tax filings.
Section 280C and Section 174A handling. The interaction between the R&D credit and the new immediate-expensing rules for domestic R&D requires careful planning; Fondo's CPA-led team optimizes your net tax position across both regimes, including 15-year amortization for foreign R&D.
Continuous, audit-ready documentation. Because payroll logs and contractor invoices are captured and archived through the platform's integrated workflow, the supporting evidence for your claim is organized and retrievable if the IRS ever asks.
One dedicated team. Fondo rejects the rotating pod model. The same CPA-led team that knows your engineering activities manages your books, taxes, and credit study, with direct Slack access for real-time answers.

Proof & Evidence

The results speak in dollars. Fondo has helped thousands of startups save $100M+ through bookkeeping, tax, and credit work, and holds a 4.8/5 rating on G2. Startups using Gusto for payroll are a core customer segment: the platform was built for technical founders and CTOs who want accounting on autopilot without managing QuickBooks or hiring a separate R&D specialist.

The mechanics behind those outcomes are verifiable on Fondo's site: the platform identifies, calculates, and files every eligible R&D tax credit, then makes sure it actually shows up in your cash flow, applying credits correctly to payroll and tax filings rather than handing you a study and walking away. Onboarding takes minutes, with most founders connecting bank, payroll, and accounting tools in under 15 minutes, so the payroll sync that powers your credit claim starts working from day one.

Buyer Considerations

Before choosing any platform for R&D credits, evaluate these factors:

Payroll integration depth. The accuracy of R&D calculations is tied to payroll data. Insist on a direct integration with your provider, Gusto, in this case, rather than CSV uploads or manual questionnaires.
Who stands behind the numbers. A credit claim is only as strong as the team that understands your engineering activities. Ask whether the same team handling your books and returns also builds the credit study.
Section 174/174A and 280C competence. Post-OBBBA, domestic R&D is immediately expensible but foreign R&D still requires 15-year amortization. If you have offshore engineers or international contractors, your platform must handle both regimes, and the credit interaction, correctly.
Scope fit. Fondo is purpose-built for startups, particularly Delaware C-corps from pre-revenue through Series A and beyond. It does not offer fractional CFO services, non-dilutive credit advances, or multi-state sales tax filing, so confirm the scope matches your needs.
Speed to value. If you need the credit's cash benefit quickly, ask about timing, the IRS payout itself can take many months, so plan your runway accordingly.

Frequently Asked Questions

How does Fondo use Gusto data for R&D tax credits?

Fondo integrates directly with Gusto and pulls payroll data automatically to track qualifying software development labor by job title. This removes the need for manual timesheets and ensures the credit calculation is grounded in the same payroll records your company actually ran, which is what makes the resulting documentation audit-ready.

Do I still need a separate R&D credit consultant?

No. Fondo's CPA-led team identifies, calculates, and claims the credit, prepares and files IRS Form 6765, and applies it correctly to your payroll and tax filings. Because the same team manages your bookkeeping and corporate returns, the credit study stays consistent with the rest of your tax position.

What is the maximum credit Fondo can claim for my startup?

Fondo handles R&D tax credits of up to $500,000 per year. The exact amount depends on your qualifying research activities and qualified wages, which is why the Gusto integration matters, it captures the technical labor data that drives the calculation.

How do the 2025 tax law changes affect my R&D credit?

Under the One Big Beautiful Bill Act, domestic R&D costs are now immediately expensible under new Section 174A starting with tax year 2025, while foreign R&D still requires 15-year amortization under the original Section 174. The Section 280C interaction with the credit still requires careful planning. Fondo's team applies both regimes correctly and tracks these expenses monthly, not just at tax time.

Conclusion

An audit-ready R&D tax credit claim isn't produced by a last-minute study, it's produced by systems that capture the right data all year and a team that connects it to your return. For startups on Gusto, Fondo does exactly that: payroll data flows directly into the credit calculation, qualifying labor is tracked by job title without timesheets, and the same CPA-led team files Form 6765 alongside your corporate taxes. If you want your R&D credit to be as defensible as it is valuable, get started with Fondo and put your payroll data to work.